Efficient Utilization Of Solar Energy Research Articles

Adaptive neural approximated inverse control for photovoltaic power generation servo systems with all states constrained

For PV power generation servo systems with motor hysteresis, an all-state constrained decentralized adaptive approximation inversion control strategy is suggested in order to further increase the tracking precision of photovoltaic (PV) panels to the sun and the efficiency of solar energy utilization. Firstly, the hysteresis phenomenon in the servo motors of photovoltaic panels is considered, and the hysteresis-approximate inverse compensator is first studied in the servo motors of photovoltaic panels. Secondly, to deal with the constrained states such as rotor angle, angular velocity, and stator current in practical servo motors, and to ensure all states are strictly confined within each set of constraints with pre-set tracking performance, the asymmetric barrier Lyapunov functions and the error transformed functions are designed. Finally, to test the effectiveness of the proposed control strategy, a hardware-in-the-loop simulation platform and a photovoltaic servo system for PV power generation are built.

Photovoltaic Thermal Heat Pump Assessment for Power and Domestic Hot Water Generation

The efficient utilization of solar energy significantly contributes to energy efficiency in buildings. Solar photovoltaic thermal (PVT) heat pumps, a hybrid of photovoltaic and solar-assisted heat pumps, have demonstrated a significant development trend due to their multi-generational capacity for heating, power, and cooling with reliable operational performance. This research work presents and investigates a single-stage compression PVT heat pump system, along with the operation principle of the system’s heating and power co-generation throughout the winter and transitional season. The construction of the testing facility, data reduction, error analysis, and performance evaluation indices of the system are all explained theoretically. A continuous experiment research project focusing on system heating and power performance was carried out in Dalian during the transition season (November in this study) and winter season (December in this study) as part of our investigation into the potential uses for space heating, residential hot water, and power supply in northern China. The findings of the experimental research demonstrate that the proposed system can generate electricity and heat at high efficiency during the winter and transitional seasons, with long-term stable performance. The system’s average heating COPt is 5 during the transitional season and 4.4 during the winter season. Meanwhile, the average photovoltaic power efficiency under both weather conditions is 11.9% and 10.2%, with a peak value of 15.7% and 12.0%, respectively. Additionally, the system compression ratio’s variation range is 2 to 3.88, which is lower than the standard heat pump system. As a result, the entire system heating operating process remains constant.

Experimental comparison of the photothermal conversion performance of coal and plant soot nanofluids for direct absorption solar collectors

Direct absorption solar collectors (DASCs) based on nanofluids improve the thermal utilization efficiency of solar energy. In this study, the waste soot materials obtained from coal and plant biomass combustion were recycled. Deionized water was used as the basic fluid. A two-stage method was used to prepare coal soot (CS) and plant soot (PS) nanofluids. Detailed investigations and comparisons of the thermal conductivity and light-absorbing characteristics of the two fluids were performed. The results suggested that the introduction of soot nanoparticles improved the heat transfer and light-absorbing capacities of the base fluid and both thermal conductivity and optical absorption of soot nanofluids were positively correlated with the soot nanoparticle loading. Subsequently, photothermal conversion experiments were conducted internally and externally. The experimental results indicated that the PS nanofluids could absorb incident light radiation more efficiently and converted it into thermal energy. Specifically, the overall photothermal conversion efficiency of the PS nanofluid at a maximum mass fraction of 0.02% in the solar simulator was 55.7%, which was approximately 9.8% higher than that of the CS nanofluid. In addition, 42.3 °C and 44 °C were the maximum temperature increases under natural sunlight for the CS nanofluid and PS nanofluid, respectively. Notably, the waste soot materials are low cost and easily available. Therefore, this work demonstrates that recycled soot nanofluids, especially PS nanofluids, are promising candidates for application in DASCs systems.

MXene/aramid nanofiber films enables highly efficient photothermal conversion for solar-driven water evaporation

Efficient utilization of solar energy is a resultful strategy to solve the problem of shortage of traditional fossil energy. Solar-driven water evaporation is considered as an effective, low-cost, renewable, and environment-friendly technology for clean water production. Herein, a novel MXene/ANF composite film was fabricated by facile vacuum filtration method. Benefiting from the excellent photothermal conversion property of MXene and the flexibility and stability of ANF, the MXene/ANF composite film exhibits high-efficient photothermal conversion and water evaporation ability. The as-prepared MXene/ANF composite film can reach as high as 98.0 °C at the laser power density of 1 kW/m2 and 54.0 °C under the solar power density of 1 kW/m2. Meanwhile, the water evaporation of MXene/ANF composite film can reach 1.432 kg/m2 under the solar power density of 1 kW/m2. Therefore, the MXene/ANF composite films possess a good prospect to be applied as a solar-driven water evaporation device to solve the problem of shortage of traditional fossil energy and inadequate freshwater supply.

Photothermal and Photovoltaic Utilization for Improving the Thermal Environment of Chinese Solar Greenhouses: A Review

A Chinese solar greenhouse (CSG) is an agricultural facility type with Chinese characteristics. It can effectively utilize solar energy during low-temperature seasons in alpine regions. The low construction and operation costs make it a main facility for agricultural production in the northern regions of China. It plays an extremely important role in “Chinese vegetable basket projects”. Energy is one of the important issues faced by CSGs. The better climate resources in the northern regions of China make it possible to apply solar energy as a green and sustainable energy source in the production of CSGs. Faced with the increasingly serious environmental problems of the new century, the Chinese government has made a decision and put it into practice to improve the rate and efficiency of solar energy utilization in agricultural facilities. In this paper, we summarize the research on the application of photovoltaic power generation and solar thermal technology in CSGs. The application of these advanced solar technologies has made great progress. With the further improvement of economic benefits and the establishment of relevant support policies and incentive mechanisms, the combination of CSG and solar energy technology will have certain application prospects and satisfy China’s requirements for long-term sustainable development.

Thermal performance of Oldroyd-B hybrid nanofluid in solar energy-based water pumping systems and entropy generation minimization

The growing need for reliable energy supply to enhance productivity in industrial and residential sectors underscores the importance of conserving solar energy. This can be achieved through measures such as optimizing solar collector coatings and optical heat processes. The environmental risks posed by fossil fuels, like coal and diesel, for electricity generation, further highlight the urgency of seeking alternative solutions. Solar energy has emerged as a highly promising option, capturing global attention for its potential to improve productivity and sustainability. The study focuses on examining aluminum alloy-titanium alloy/ethylene glycol hybrid nanofluid in the flow of non-Newtonian Oldroyd-B through a parabolic trough surface collector located in the solar water pumps (SWP). The Galerkin weighted residual method was utilized to solve the group of equations that describe momentum, energy, and entropy generation. The findings show that the hybrid nanofluid leads to better thermal radiative performance compared to the ordinary nanofluid. Therefore, the implications of these findings are substantial, particularly in the fields of thermal engineering and renewable energy. By offering insights into the efficient utilization of solar energy in water pumping systems and the reduction of entropy generation, this research has the potential to drive innovations that enhance the sustainability and performance of such systems.

Solar Photo-Voltaic and thermal (PVT) system facilitated with novel coaxial condensing heat pipe (CCHP): Thermo hydrodynamic modelling and parametric optimization for overall operation performance

Heat pipes offer tremendous potential for utilization in the energy and construction industries due to their excellent heat transmission efficiency. The current study involved the development of a theoretical model for thermal transport in a coaxial condensing heat pipe (CCHP) connected with solar photovoltaic and thermal (PVT) systems. Subsequently, parameter studies were conducted to analyze their impact on system performance, including irradiation intensity, surrounding temperature, inlet temperature, mass flow rate and PV coverage factor. In addition, temperature variation, thermal and electrical conversion capabilities of the CCHP/PVT system on typical days were discussed utilizing meteorological conditions in Wuhan city as inputs for the analysis. Our findings showed that the morning is when thermal efficiency is at its highest across the seasons, and it remained between 50% and 55%. Compared to natural cooling and conventional heat pipe cooling, the CCHP/PVT system reduced the temperature of the PV panels by approximately 30.3% and 16.3%, respectively. The proposed CCHP/PVT system has a respectively 14.4% and 5.2% enhancement in thermal and electrical efficiencies in comparison with those conventional heat pipes. Here, theoretical results agree well with former published ones, with average errors of no more than 10%. Our parametric investigations were then put into practice to assess the overall performance and to serve as a theoretical foundation for later development. It was really beneficial to boost the efficiency of solar energy utilization in the Yangtze River, China, where solar potentials were relatively poor than north western China.

Black Phosphorus-Doped Graphitic Carbon Nitride with Aromatic Benzene Rings for Efficient Photocatalytic Hydrogen Production.

Graphitic carbon nitride (g-C3N4, abbreviated as g-CN) suffers from low visible-light-responsive photocatalytic efficiency. In this study, aromatic benzene rings and black phosphorus (BP) were successfully incorporated into g-CN photocatalysts (BP/A-CN), resulting in modified materials with improved properties. Structural analysis confirmed the successful integration of aromatic rings and BP into the g-CN framework, indicating the formation of a stable composite. Morphological characterization revealed that the introduction of aromatic rings and BP did not cause any significant changes in the nanosheet-like morphology of the g-CN photocatalysts. To evaluate the photocatalytic hydrogen production activity under visible-light irradiation, various compositions of aromatic benzene rings and BP were investigated. Specifically, the BP/A-CN composite exhibited an enhanced photocatalytic hydrogen production rate (860 μmol g-1 h-1), which was approximately 4.0 times higher than that of g-CN (210 μmol g-1 h-1). The improved hydrogen production rates observed in the modified g-CN photocatalysts can be attributed to several factors. First, the aromatic benzene rings and BP enhanced light absorption, thereby improving the efficient utilization of solar energy. Additionally, the presence of these components in the composite photocatalysts reduced electron-hole recombination, thereby facilitating improved charge transfer and separation efficiencies. Overall, this study demonstrates the potential of incorporating aromatic benzene rings and BP into g-CN photocatalysts for efficient solar energy conversion. These findings contribute to the development of novel photocatalytic materials with enhanced performance and highlight the versatility of g-CN-based composites for various applications in environmental and energy fields.

Efficient solar thermal energy utilization and storage based on phase change materials stabilized by MOF@CuO composites

Solar thermal conversion technology employing phase change composites is an available strategy for solar thermal energy utilization and storage. In this work, a novel metal-organic framework (MOF)-based phase change composites were successfully constructed through vacuum impregnation method. The stearic acid (SA) was served as phase change materials, and the SA-modified MOF (HS) with CuO derived from MOF (HS@CuO composites) was assembled to be support materials, which composed the SA/HS@CuO phase change composites. HS@CuO composites could well prevent the SA leakage over phase change point and endowed the phase change composites outstanding form stability (SA loading rate: 71.8 %) and thermal storage ability (ΔHm: 158.24 J/g). Furthermore, the SA/HS@CuO possessed greatly strengthened thermal conductivity (improved by 3.8 times over SA) and extraordinary solar thermal conversion performance (η: 95.9 %). These results powerfully suggest that the innovative phase change composites own promising potentials in not only solar energy utilization and development but also thermal storage and management fields.

Applying the solar solid particles as heat carrier to enhance the solar-driven biomass gasification with dynamic operation power generation performance analysis

Solar-driven biomass gasification is a promising technology to improve the utilization efficiency of solar energy and biomass, which also enhances the thermochemical storage and the subsequent stable utilization. Whereas, the intermittence of solar energy deteriorates the stability and continuity of the thermochemical reaction process, which limits the efficient conversion of the reaction. In this regard, this work proposes a new solar-driven biomass gasification technology based on solid particle heat carrier. Different from the direct solar-driven gasification, solid particles are performed as medium to receive the concentrated solar radiation energy and transfer energy to biomass feedstocks. In addition, the combined power generation scenario is adopted to evaluate the thermodynamics and economics of the technology. The integration of solid particle heat storage, the system dispatch and stable operation will be further enhanced. Results show that under the optimal condition, the system maximum thermal and exergy efficiencies are increased by 12.94% and 12.51%, respectively. Considering the system off-design operation, with the evaluated typical periods of four seasons, the averaged power generation efficiency is increased by 5.16%, with the highest efficiency improvement of 9.41% occurring in the typical winter days. With the change of receiver price and biomass price, the maximum decline of levelized cost of electricity reaches to 17.6%, which presents the favorable economic benefits. As a new solar thermochemical technology, this technology exhibits competitive characteristics, significantly improving the utilization efficiency of solar and biomass energy.

Solar-driven interfacial desalination actively adjusted by the electric field

Interfacial evaporation is deemed as an efficient utilization of solar energy for desalination. Notwithstanding, the heat loss and ion transportation are commonly contradictory in evaporator, which means that the balance between heat transfer and mass transfer is fragile. Meanwhile, the electric field regulation method is effective on the microscale transportation of ion in porous solar absorber and reduction of the heat loss. Herein, to eliminate the salt precipitation left on evaporator surface and maintain a superior evaporation efficiency, an electrode structure is coupled on the solar-driven interfacial evaporator, and the evaporation performance and salt-resistant performance in the electric field are studied in the saline water with 0–20 wt% concentrations. Subsequently, the mechanism of electric field on surface tension, electric field force and evaporation enthalpy are discussed. Concretely, the evaporation is increased up to 29.14% by the electric field, and the evaporation efficiency is reinforced from 65% to over 90%. Moreover, the salt precipitation on the evaporator surface is reduced greatly, which improves the self-cleaning capability of evaporator. Besides, the excellent desalination performance of the interfacial evaporator with electric field is resultant of the reduced surface tension, enhanced electric field force, decreased evaporation enthalpy, weakened ion nucleation and crystallization.

The Synergistic Effect in CdS/g-C3N4 Nanoheterojunctions Improves Visible Light Photocatalytic Performance for Hydrogen Evolution Reactions.

This study focuses on the development of heterojunction photocatalysts for the efficient utilization of solar energy to address the energy crisis and reduce environmental pollution. Cadmium sulfide (CdS)/graphite-type carbon nitride (g-C3N4) nanocomposites were synthesized using a hydrothermal method, and their photoelectrochemical properties and photocatalytic performance for hydrogen evolution reaction (HER) were characterized. Scanning electron microscope images showed the intimate interface and caviar-like nanoheterojunction of the CdS nanoparticles on g-C3N4 nanospheres, suggesting their potential involvement in the photocatalytic process. Electrochemical and spectroscopic analyses were conducted to confirm the roles of CdS in the nanoheterojunction. The results showed that 10 wt% CdS/g-C3N4 nanospheres exhibited higher photocatalytic activity than pure g-C3N4 under visible light irradiation. A HER rate of 655.5 μmol/g/h was achieved after three photocatalytic cycles, signifying good photocatalytic stability. The synergistic effect of the Z-scheme heterojunction formed by g-C3N4 and CdS was identified as the main factor responsible for the enhanced photocatalytic performance and stability. The interface engineering effect of CdS/g-C3N4 facilitated the separation of photogenerated electrons and holes. This study provides insights into the design and fabrication of efficient HER photocatalysts.

Enhanced photocatalytic hydrogen production of S-scheme TiO2/g-C3N4 heterojunction loaded with single-atom Ni

S-scheme heterostructure photocatalysts can achieve highly efficient solar energy utilization. Here, single-atom Ni species were deposited onto TiO2/g-C3N4 (TCN) composite photocatalyst with an S-scheme heterojunction for highly efficient photocatalytic water splitting to produce hydrogen. Under solar irradiation, it realized the hydrogen production activity of 134 µmol g–1 h–1, about 5 times higher than the TCN without atomic Ni. In-situ Kelvin probe force microscopy characterization and the density functional calculation certify that by forming the S-scheme heterojunction, the photo-excited electrons from the TiO2 combine with the photogenerated holes at the coupled g-C3N4 driven by a built-in electric field. More importantly, the single-atom Ni species stabilized the photogenerated electrons from the g-C3N4 could effectively enhance the charge separation between the holes on the valence band of TiO2 and electrons at the conduction band of g-C3N4. Meanwhile, the Ni atoms act as the surface catalytic centers for the water reduction reaction, which greatly improves the reactivity of the photocatalyst. The present work provides a new approach for developing noble metal-free heterojunctions for high-efficiency photocatalysis.

Absorption bandwidth broadening of photon upconversion solid-solution organic crystals by co-dissolution of multiple sensitizers

Photon upconversion (UC) enhances the utilization efficiency of solar energy. However, UC materials generally exhibit a narrow optical absorption bandwidth of the sensitizing molecules that create excited triplet states, including the case of solid-state UC materials. Here, we demonstrate the concept of simultaneous dissolution of multiple sensitizers into crystals of fluorescent molecules to broaden the absorption bandwidth, by using an example of combining two sensitizing porphyrins. Consequently, we appreciably enhanced the UC emission intensity under simulated sunlight. In the air, the developed solid-solution crystals exhibited excellent photostability over 50 h and a low excitation threshold of <1-Sun intensity.

The design and performance optimization of all-inorganic CsPbIBr2/CsSnI3 heterojunction perovskite solar cells

With the fast growth of perovskite solar cells (PSCs), inorganic perovskite, represented by Cs-based perovskite, consistently surpasses organic perovskite solar cells in regards of photovoltaic performance. Among them, CsPbIBr2 materials stand out for their excellent efficiency and stability in all-inorganic PSCs. Unfortunately, poor solar energy utilization results from the CsPbIBr2′s wide band gap, which severely limits light harvesting. This work proposes an all-inorganic CsPbIBr2/CsSnI3 heterojunction using CsSnI3 instead of HTL based on the matched band structure of CsSnI3 and CsPbIBr2, then simulations and optimizes it using SCAPS-1D software to increase solar energy utilization and cell efficiency. The results show that the CsPbIBr2/CsSnI3 perovskite heterojunction PSC extends the absorption spectral wavelength range from 600 nm in the visible area to 960 nm in the near-infrared region, which greatly improves solar energy utilization and is more favorable to photogenerated carrier migration. The device's performance is ideal after optimization when Voc = 1.0344 V, Jsc = 39.36 mA/cm2, FF = 89.43%, and PCE = 36.41%. The device efficiency of the optimized CsPbIBr2/CsSnI3 heterojunction is 36.41%, which is significantly higher than the PCE of 5.45% for a single layer of CsPbIBr2. Moreover, the CsPbIBr2/CsSnI3 solar cell can respond to near-infrared light, enabling it to generate power at night. Consequently, this work reveals that the constructed CsPbIBr2/CsSnI3 heterojunction PSCs can enable the bright future of Cs-based inorganic PSCs for practical applications in photovoltaics and optoelectronics.

Co/N co‐doped flower‐like carbon‐based phase change materials toward solar energy harvesting

AbstractThe photothermal conversion capacity of pristine organic phase change materials (PCMs) is inherently insufficient in solar energy utilization. To upgrade their photothermal conversion capacity, we developed bimetallic zeolitic imidazolate framework (ZIF) derived Co/N co‐doped flower‐like carbon (Co/N‐FLC)‐based composite PCMs toward solar energy harvesting. 3D interconnected carbon framework with low interfacial thermal resistance, abundant carbon defects and high content of nitrogen doping, excellent localized surface plasmon resonance (LSPR) effect of Co nanoparticles, and light absorber Co3ZnC in Co/N‐FLC synergistically upgrade the photothermal capacity of (polyethylene glycol) PEG@Co/N‐FLC composite PCMs with an ultrahigh photothermal conversion efficiency of 94.8% under 0.16 W/cm2. Uniformly anchored Co and Co3ZnC nanoparticles in carbon framework guarantee excellent photon capture ability. Bridging carbon nanotubes (CNTs) in 2D carbon nanosheets further accelerate the rapid transport of phonons by constructing cross‐connected heat transfer paths. Additionally, PEG@Co/N‐FLC exhibits a thermal energy storage density of 100.69 J/g and excellent thermal stability and durable reliability. Therefore, PEG@Co/N‐FLC composite PCMs are promising candidates to accelerate the efficient utilization of solar energy.

A solar radiation intelligent forecasting framework based on feature selection and multivariable fuzzy time series

Accurate solar radiation forecasting can effectively improve solar energy utilization efficiency and decrease the operational cost of solar photovoltaic power plants. However, some common forecasting methods have certain limitations, such as neglecting data fuzziness, meteorological factors, feature selection, and seasonal adjustment. Therefore, a solar radiation intelligent forecasting framework based on feature selection and multivariable fuzzy time series is proposed. Specifically, a combined fuzzy strategy is used to fuzzy the data, and an improved multi-objective optimization algorithm is proposed to search for the optimal parameters. A seasonal multivariable fuzzy time series is proposed to achieve multivariable inputs and seasonal adjustments. The experimental analysis, statistical test, and robustness analysis all verify the superiority of the proposed forecasting framework compared with competitive models. The MAPE values of the proposed forecasting framework for two regions are about 6% and 4%, respectively, which outperform some common basic models such as BPNN(about 11% and 9%), ELM(about 12% and 10%), LSTM(about 9% and 7%). The comparison analysis further indicates that the vital parts of the forecasting framework containing feature selection, seasonal adjustment, multi-objective optimization, and multivariable inputs can all have a positive influence on forecasting performance.

Full spectrum photon management of photonic crystal-based aerogels to achieve the multiscale multiphysics regulations and optimizations of PV-TE/T systems

Multicomponent coupling is an effective way to achieve full-spectrum solar energy utilization. However, conventional multicomponent coupled PV systems are deficient in the rational distribution of full-spectrum sunlight. In this study, a photovoltaic-thermoelectric/thermal (PV-TE/T) system with photonic crystal-based aerogels (PCA) is proposed based on a novel strategy for efficient full-spectrum solar energy utilization. Then, a multiscale multiphysics theoretical model is developed to study the effects of full-spectrum selectivity characteristics of PCA on the performance of the PCA-based PV-TE/T system. Comparative analyses between stand-alone PV system, tandem PV-TE system, normal PV-TE/T system and PCA-based PV-TE/T system are performed. The full-spectrum selectivity characteristics of PCA allows the PCA-based PV-TE/T system to not only increase the maximum achievable photon current density of PV component by 2.39%–3.00%, but also to increase the heat source (light absorption) for TE component by at least 2609.84%. When the concentration increases to 20, the electrical efficiency of the stand-alone PV system is already 0%, and the electrical efficiency of the tandem PV-TE starts to decrease to 27.01%. As for the PCA-based PV-TE/T system, the maximum electrical efficiency of the PCA-based PV-TE/T system is 32.64% at the concentration of 93. Meanwhile, the thermal collector of the PCA-based PV-TE/T system absorbs 6277.5 W/m2 of thermal energy. Therefore, the PCA-based PV-TE/T system not only has a high efficiency of full-spectrum solar energy utilization, but also is applicable to higher concentrations, which offers the system the potential for further cost reductions.

RESEARCH ON THE OPERATION OF THE ELECTROMECHANICAL SYSTEM OF AN AUTONOMOUS PHOTOELECTRIC PUMPING STATION

The work is dedicated to the investigation and analysis of the operation of the electromechanical system of an autonomous photovoltaic pumping station. Photovoltaic pumping stations are essential components of sustainable development, enabling efficient utilization of solar energy for independent water pumping. The study provides a detailed analysis of the structure and operation principles of the photovoltaic pumping station. Key components of the system, such as solar panels, electronic controllers, electromechanical pumps, and energy storage, were studied. Various methods for maximizing energy output from solar panels and optimizing the efficiency of pumping systems were examined. The research results revealed that the effective functioning of the photovoltaic pumping station depends on the precise balance of electromechanical components, optimal utilization of solar energy, and efficient management of electronic systems. Recommendations were put forth for improving the system's efficiency and reliability. Within the study, it was established that a crucial factor in the successful function of the photovoltaic pumping station is the selection of the optimal type of solar panels and their positioning to ensure maximum solar energy collection. The issue of storing excess energy to maintain system stability during periods of limited solar irradiation was also addressed. Moreover, the study included modeling and experimental research of various operational modes of the pumping station, including load variation and solar activity fluctuations. This provided crucial data regarding the dynamics and compliance of system operation with planned parameters. An important aspect of the research was evaluating the efficiency and economic viability of the photovoltaic pumping station in comparison with traditional energy sources for water supply. It was found that in some cases, the use of photovoltaic energy could be a more economically advantageous and environmentally cleaner solution. Overall, the results of this scientific work hold significant practical value for sustainable energy development and the utilization of renewable energy sources. The investigation of the operation of the electromechanical system of an autonomous photovoltaic pumping station contributes to a deeper understanding of the technological, economic, and environmental aspects of such systems. In conclusion, this research provides a deeper insight into the functioning principles of autonomous photovoltaic pumping stations and can serve as a foundation for further studies in the field of renewable energy utilization.

Flexible Bi(Er3+/Yb3+)2MoO6/PAN with sensitive temperature feedback and enhanced visible light photocatalysis

(Bi1-x-yErxYby)2MoO6 polyacrylonitrile (BMO-EY/PAN) is fabricated with nanocrystal-inlaid fiber structure via electrospinning, which fulfills efficient photocatalytic performance and real-time temperature monitoring. In comparison to their conventional powdered BMO counterparts, embedding BMO-EY nanocrystals into the PAN polymer imparts a suite of desirable traits to the fibers, such as efficient solar energy utilization, outstanding reproducibility, superior stretchability (498 cN), and extensive specific surface area (24.11 m2 g−1). The working temperature of the catalytic degradation process is monitored and fed back in real time by 2H11/2 → 4I15/2 and 4S3/2 → 4I15/2 radiation transitions of Er3+ with excellent sensitivity. Simultaneously, the addition of rare earth (REs) elements into the bismuth molybdate lattice broadens its visible absorption range, expediting charge transfer of photogenerated electrons and augmenting its ability to degrade pollutants under visible light irradiation. The degradation efficiency of tetracycline hydrochloride (TCH) reaches a maximum of 97%, while the degradation constant K is notably high at 0.047 min−1 when subjected to simulated sunlight irradiation. This degradation trend is also observed in the case of rhodamine B (RhB). In general, these advanced photocatalytic fibers, equipped with non-contact temperature feedback capabilities, manifests the potential to serve as an effective, cost-efficient, and environmentally sustainable approach for water treatment processes.