Green Method Research Articles

A sustainable HPTLC approach for green assessment of Tyrosine to phenylalanine ratio in chronic kidney disease

The kidney is considered the main site for the net release of Tyrosine (Tyr) to the circulation through hydroxylation of Phenylalanine (Phe) using phenylalanine hydroxylase enzyme. In chronic kidney disease (CKD) patients the enzyme activity is impaired, therefore the serum concentration ratio of Tyr/Phe is reduced compared to healthy individuals. This motivates us to develop a cost effective, green, simple, sensitive, and selective HPTLC method to measure the levels of Tyr and Phe in serum samples. The analysis was carried out using acetonitrile: ethanol: 25% ammonia solution: ethyl acetate (6.5: 1.5: 1: 0.5) as a mobile phase. Rf values were 0.55 ± 0.05 for Phe and 0.39 ± 0.05 for Tyr. Densitometry scanning was performed using UV detector and dual wavelengths of 210 and 225 nm were obtained. A linear correlation was observed between the levels of Phe and Tyr, ranging from 50 to 700 ng band− 1 and 50 to 600 ng band− 1, respectively, under the optimum conditions. The method selectivity, linearity, precision, accuracy, and robustness were all confirmed in accordance with ICH recommendations. Calculations of the separation and resolution factors, number of theoretical plates, and height equivalent to theoretical plates prove to the chromatographic system accuracy and high separation efficiency. The developed method exhibits an acceptable eco-scale when measuring the method greenness using AGREE and GAPI softwares. It was applied for the determination of Phe and Tyr concentrations in human serum samples.

Enhancing zT in Organic Thermoelectric Materials through Nanoscale Local Control Crystallization.

Organic thermoelectric materials are promising for wearable heating and cooling devices, as well as near-room-temperature energy generation, due to their nontoxicity, abundance, low cost, and flexibility. However, their primary challenge preventing widespread use is their reduced figure of merit (zT) caused by low electrical conductivity. This study presents a method to enhance the thermoelectric performance of solution-processable organic materials through confined crystallization using the lithographically controlled wetting (LCW) technique. Using PEDOT as a benchmark, we demonstrate that controlled crystallization at the nanoscale improves electrical conductivity by optimizing chain packing and grain morphology. Structural characterizations reveal the formation of a highly compact PEDOT arrangement, achieved through a combination of confined crystallization and DMSO post-treatment, leading to a 4-fold increase in the power factor compared to spin-coated films. This approach also reduces the thermal conductivity dependence on electrical conductivity, improving the zT by up to 260%. The LCW technique, compatible with large-area and flexible substrates, offers a simple, green, and low-cost method to boost the performance of organic thermoelectrics, advancing the potential for sustainable energy solutions and advanced organic electronic devices.

Sustainable Manufacturing and Green Processing Methods

Sustainable manufacturing and green processing methods have gained immense relevance over recent years due to pressing concerns over environmental degradation, resource scarcity, and industrial waste [...]

Green synthesis of perovskite-type FeMnO3 nanoparticles: Study of its electrochemical hydrogen storage and catalytic activity on the thermal decomposition of ammonium perchlorate

Perovskite-based mixed metal oxides have become a promising material as efficient catalysts and electrocatalysts for various energy storage-related and fuel applications in modern scientific society. This study is the first attempt to explore the catalyst and electrocatalyst application of iron manganese oxide (FeMnO3) perovskite. The pure FeMnO3 nanoparticles (NPs) were synthesized using a green method by Aloe vera extract as a capping agent. The cubic crystal structure, nanosized particle, purity, mesoporous feature and ferromagnetic properties of FeMnO3 NPs were confirmed using XRD, FT-IR, FESEM-EDS mapping, BET, and VSM analysis. The electrocatalyst properties of the sample were measured using cyclic voltammetry (CV), chronopotentiometry (CP), and electrochemical impedance spectroscopy (EIS) techniques. The results showed that the specific capacitance value and hydrogen storage capacity of FeMnO3 NPs were about 382.5 Fg−1 and 2622 mAhg−1 in the aqueous alkaline medium (3 M KOH), respectively. Additionally, the catalytic activity of the sample on the thermal decomposition of ammonium perchlorate (AP) was analyzed using differential scanning calorimetry (DSC) and thermogravimetry (TGA) instruments. The results revealed that FeMnO3 NPs enhanced the released heat of AP from 525 to 1760 Jg−1 and reduced the decomposition temperature from 458 to 381 °C.

Enhancing Urban Livability in Shanghai under Sustainable Development

Abstract: As one of China's largest cities, Shanghai faced significant challenges during its rapid urbanization, including housing supply-demand imbalances, traffic congestion, and environmental pollution. In response to these issues, this paper examined urban sustainability in Shanghai within the framework of the United Nations' Sustainable Development Goal. The Shanghai Municipal Government took proactive steps to improve urban livability by implementing various measures such as increasing the supply of affordable housing, expanding and enhancing public transportation systems, strengthening environmental governance, and improving public safety. These initiatives were specifically designed to address the pressing issues of housing shortages, traffic congestion, and environmental pollution, with the ultimate goal of improving residents' quality of life and enhancing the city's overall attractiveness. Through an extensive literature review and case analysis, this study proposed several additional improvement measures. These included continuing to increase land supply, tightening real estate market regulations, promoting the adoption of green transportation methods, enhancing intelligent traffic management systems, reinforcing environmental supervision and governance, and improving the overall quality of public services. The research offered valuable insights for other cities striving to achieve sustainable development goals, providing practical strategies for further enhancing urban livability and ensuring long-term sustainability..

Use of green RPLC methods as an alternative to conventional RPLC methods in the determination of the pKa values of some H2 receptor antagonists

In this study, the chromatographic retention behavior and dissociation constants (pKa ) of H2 receptor antagonists ranitidine and famotidine were determined by the green reverse phase liquid chromatography (RPLC) and hybrid micellar chromatography methods, which are widely used today. Replicate analyses were performed on a Gemini NX C18 (250 × 3.0 mm ID, 5 μm) column at constant temperature (37 °C) and flow rate (1 mL/min). The obtained data analyses were evaluated with the linear solvation energy relationship (LSER) approach and the consistency of the data was assessed by calculating the theoretical retention time values. The pK a 1 s s and pK a 2 s s values obtained in ethanol–water binary mixtures containing 11%, 13%, 15%, and 20% (v/v) ethanol were also calculated with this approach. The pKa values of these compounds in water and pure micellar environment were calculated with pK a s s values and solvent. It was observed that the p K a w w data obtained by three different methods were compatible. Accordingly, with the hybrid micelles method, p K a 2 w w and p K a 3 w w values for famotidine were calculated as 7.305 and 9.869, respectively, and p K a 1 w w and p K a 2 w w values for ranitidine were calculated as 2.952 and 8.589. The environmental impacts of the methods applied in the study were evaluated using green metric tools.

Efficient and green preparation of baicalein from Radix scutellariae with deep eutectic solvent pretreated bioconversion of cellulose-based microreactor

To enhance the bioconversion ratio, an efficient and green bioconversion method for the preparation of baicalein with a microreactor composed of edible microorganisms (Aspergillus oryzae and Yeast) treated with deep eutectic solvent co-immobilized on magnetic cellulose was investigated. Various types of deep eutectic solvents (DES) were screened to obtain a superior biocatalytic effect. NADES (CHCL/EG) harvested the maximum catalytic effect at 1.0 wt% under optimal conditions (concentration of bacterium 1.5 × 107 (C × 107 cells/mL), wet weight of microreactor 12 g, incubation temperature 33 °C and pH 5.0, liquid-solid ratio 30:1 (mL/g), incubation time 48 h), baicalein reached 66.36 mg/g, which increased 3.46-fold to that of normal sample after optimizing. DES could increase the permeability of the cell membrane. The bioconversion rate of baicalin reached 97.2%.Moreover, IC50 values of the extracts measured by the DPPH-radical scavenging test were 0.366 mg/mL (control sample 0.674 mg/mL). The residual activity of the microreactor was 80.2 % after using it 14 times. The experimental results showed that bioconversion is an effective method for preparing baicalein from the plants.

Advances in Green Synthesis of Silver Nanoparticles: Sustainable Approaches and Applications

In the rapidly evolving field of nanotechnology, the synthesis of silver nanoparticles (AgNPs) has shifted towards eco-friendly methodologies, aligning with the growing demand for sustainable practices. Biologically synthesized AgNPs, particularly noteworthy for their applications in medicine and materials science, exhibit exceptional efficacy against microorganisms. The unique physicochemical properties of AgNPs, including their small size and large surface area-to-volume ratio, contribute to their versatility in diverse sectors. The advantages of AgNPs, such as ease of production, low cost, and high carrier capacity, make them preferred for various applications, including drug delivery systems. Despite concerns about environmental hazards and toxicity, the benefits of AgNPs, such as controlled drug release and targeted delivery, position them as valuable contributors to advancements in nanotechnology. Green synthesis methods, emphasizing biological processes and natural compounds, gain prominence for their sustainability and reduced environmental impact. The regulatory oversight of nanoproducts ensures their safe use, balancing their advantages with environmental considerations. Ongoing research promises further innovations, solidifying AgNPs' role as key contributors to progress in nanotechnology and materials science. Keywords: Silver nanoparticles, Green synthesis, Sustainable approaches, Characterization, Applications, Eco-friendly methods.

Green biogenic synthesis of silver nanoparticles: a thoroughly exploration of characterization and biological efficacy

Conventional physical and chemical methods for synthesizing silver nanoparticles (AgNPs) often use reducing agents, and other chemicals that are harmful to the environment because of their toxic properties. This has prompted significant concern and the need to develop environmentally acceptable approaches. Due to the constraints of traditional chemicalphysical methods, green synthesis methods are being developed to fill these gaps by utilizing biological components extracted from plants. These plant-derived biomolecules are highly specific and facilitate the creation of metal nanoparticles. AgNPs, produced through these methods, possess a wide variety of metabolites with antibacterial effects. In light of this, the current investigation aimed to produce AgNPs using aqueous extracts obtained from Moringa leaves (Ml), Juniper leaves (Jl), and Juniper beans (Jb)via a green chemistry technique. Various analytical methods, including UV-visible spectrophotometry (UV-Vis), transmission electron microscopy (TEM), dynamic light scattering (DLS), Fourier transform infrared spectroscopy (FT-IR), and energy-dispersive X-ray spectroscopy (EDX) analysis, were employed to characterize the synthesized AgNPs. After adding the plant extracts, the color of the aqueous silver nitrate solution noticeably changed to brown. Furthermore, a shift in absorption spectra was noted, with absorbance peaks appearing around λmax = 449.5 nm, 478.5 nm, and 440.5 nm for Juniper leaves, Jb, and Moringa extracts, respectively. DLS analysis revealed that the synthesized AgNPs varied in size and polydispersity index (PDI) values, with sizes of 108 nm (PDI = 0.246), 101 nm (PDI = 0.278), and 161 nm (PDI = 0.240) form Jl, Jb, and Ml extracts, respectively. These nanoparticles displayed no agglomeration and were stable over a long period. Transmission electron microscope/TEM analysis confirmed the synthesis of well/dispersed AgNPs with an average sizes of less than 22 nm, displaying different shapes likely due to the variety of capping agents present in the bean and leaf extracts. Elemental profiles showed a peak at 3 keV for the synthesized AgNPs, indicating a high proportion of silver elements in all three samples. The synthesized nanoparticles were also subjected to biological screening. The investigation involved testing their antibacterial activity against various bacterial and fungal strains. The Jlnano extract exhibited significant antifungal activity. Conversely, the aqueous and nano-extracts of Ml showed less effectiveness against fungal growth. The plant nano extracts, in particular, demonstrated a clearer effect against all tested fungi compared to the plant aqueous extracts. Among the AgNPs synthesized, those from Moringa extract had the greatest effect on Gram-positive bacteria (S. aureus), with an inhibitory zone diameter of 4.5 mm.

Green method for preparation NaVO2 from vanadium-chromium slag based on Na2CO3 roasting and water leaching

An effective and environment-friendly method for preparing NaVO2, which can be used as an energy storage material, from Na2CO3 roasted vanadium-chromium slag was proposed using water as the leaching medium. Vanadium-chromium slag with 30 % Na2CO3 was heated in air and argon atmospheres from 30 °C to 1000 °C, respectively. The results show that vanadium compounds converted to NaVO3 while chromium compounds to Na2CrO4 under air. NaVO3 and Na2CrO4 were water-soluble making the separation of vanadium and chromium complicated. NaVO3 and Na2CrO4 were water-soluble making the separation of vanadium and chromium complicated. Heating vanadium-chromium slag in an argon atmosphere caused Fe2VO4 to react with Na2CO3, forming NaVO2 and NaFeO2 below 1000 °C. However, chromium compounds unreacted in argon. NaFeO2 was insoluble, while NaVO2 was water-soluble with a leaching efficiency exceeding 70 %. Notably, the characteristic peak of V(III) in NaVO2 was first found to be −532.00 ppm by the liquid 51V NMR spectrum. This method represents a novel, green strategy for the resource utilization of vanadium-chromium slag, involving Na2CO3 roasting in an argon atmosphere to produce NaVO2. It offers a promising approach to reduce the cost of NaVO2 battery production and support its commercialization.

Co-solvent assisted supercritical fluid extraction of Curcuma caesia Roxb. (black turmeric) as a green and sustainable technology: Its bioactivity and anti-cancer properties

This study investigates a green method to extract black turmeric oleoresin (BTO) using supercritical fluid extraction (SFE) with ethanol as co-solvent. The optimized parameters of SFE were 350 bar/65 °C/150 min, yielding 6.56 g oleoresin/100 g dwb and 134 μg total curcuminoids/ g dwb (dry weight basis). The conventional ethanol extraction gave 13.94 g/100 g oleoresin, and the total curcuminoids in the oleoresin was 128 µg/g dwb. Hence ethanol was used as a co-solvent and this approach increased the yield of the oleoresin to 12.53 g/100 g and curcuminoids (223 µg/g) among all the methods. The SFE+ co-solvent extracted BTO showed significant antioxidant activity. Phytochemicals present in extracted oleoresin were quantified using HPLC, LCHRMS, GCMS, and FTIR. Similarly, a comparatively higher (84 %) anti-inflammatory activity compared to diclofenac and bactericidal effects against Salmonella typhi, Pseudomonas aeruginosa and Listeria monocytogenes have been observed. The remarkable in vitro anticancer activity of the extract in HepG2 (IC50: 6 µL/mL) and HPAC (IC50: 5 µL/mL) cell lines indicated the potency of the extract.

Analyzing the synergistic effect of Mg on Mentha spicata L. mediated Mn2O3 nanoparticles for energy storage and bio-medical applications

This article describes the facile preparation of cubic structured pure and Mg-doped Mn2O3 nanoparticles by green synthesis method. The prepared pure and Mg-doped Mn2O3 nanoparticles were investigated to determine their structure, functional group, band gap, morphology and composition. The cubic structured Mn2O3 and Mg-doped Mn2O3 nanoparticles were clearly confirmed by X-Ray Diffraction (XRD) and Field Emission Scanning Electron Microscope (FE-SEM) micrographs. Fourier transform infrared (FTIR) spectroscopy spectra revealed two distinct vibration peaks corresponding to the symmetric stretching Mn–O and Mn–O–Mn, which was well supported by the UV and PL outcomes. A Cyclic Voltammetry study was explored for the prepared pure and Mg-doped samples at different scan rates (mV/s). Apparently, Mg-doped Mn2O3nanoparticles exhibited the highest specific capacitance value of 266 F/g with an energy density of 430 Wh/kg. The prepared sample also exhibited antimicrobial activity by showing variation in the zone of inhibition with respect to selected bacteria and fungi. The results of the study suggest that the prepared Mg-doped nanoparticles could act as a promising supercapacitor, anti-biofilm, anti-oxidant agent and water purifier.

Magnetically separable Mangifera Indica leaf extract-mediated hematite nanoparticles potentiate cytotoxic activity

In the present report, an environmentally benign, cost-effective, and green route method was adapted to synthesize hematite (α-Fe2O3) nanocrystals (NCs) using Magnifera Indica leaf extract (MILE). Crystal structure characterization of Magnifera Indica leaf extract-mediated hematite nanocrystals [MILE@α-Fe2O3 NCs] showed rhombohedral crystallinity with space group R3¯c as confirmed through the Rietveld refinement method. Microstructural characterization carried out using a transmission electron microscope (TEM) confirmed the nano-dimensional formation of MILE@ α-Fe2O3 NCs with an average size of 3.7 nm as derived from the Gaussian distribution of particle analysis. The optical spectrum shows an absorption peak at 264 nm and another broad hump centered at 383 nm. MILE@α-Fe2O3 NCs exhibit superparamagnetic behavior and also intact reusability ability or recoverable efficiency after being used due to magnetically separation ability. The anticancerous activity of MILE@α-Fe2O3 NCs was carried out against MDA-MB 231 cell lines and it was found that cell viability follows a concentration-dependent manner with a low value of IC50 = 34.70 µg/mL.

Hydraulic horizontal slit-stress synergistic unloading fracturing in coal seams

Solving the problem of gas extraction from low-permeability coal seams is an urgent issue in the global coal industry, and exploring green and efficient mining methods has potential applications in this field. In this study, the No. 9 coal seam of the Guizhou Longfeng Coal Mine was selected as the research object. The method of using a hydraulic horizontal slit to create a compensation space and then synergizing it with the coal body’s own stress to decompress and increase the permeability of the coal body was studied through similarity simulation and numerical simulation experiments. This study showed that the slit can cause the overall development, expansion, and penetration of coal seam fissures. Thereby, a large number of fissures are produced in the coal seam and its upper rock layer, which form, as a whole, a “positive trapezoid” shape. The three stages of the slit produced 165, 487, and 1572 fissures, which unpressurized and increased the penetration of the coal and rock body. The slit causes the upper coal body to lose its support, and the original stress balance of the coal and rock is broken, forming a decompression zone. At the same time, the coal body below starts to expand and deform after losing the vertical stress. The decompression zone gradually expands up and down, and the stress on both ends of the compensation space becomes larger, forming a stress concentration area. After the overall displacement of the coal seam caused by the slit, a “positive triangle” area is formed. In the upper part of the area, six displacement dividing lines are created, which form five areas. The displacement shows the distribution characteristics of a large displacement in the middle and a small displacement at both ends. The results of the similarity simulation and numerical simulation experiments were verified. The study provides a new way of thinking for effectively preventing coal and gas protrusion and improving mining efficiency.

Smart sequential spectrophotometric analysis of Fluconazole and its two toxic official impurities having superimposed spectra; Greenness, whiteness, blueness assessment and in silico toxicity profiling

Owing to the health hazards of impurities presence in active pharmaceutical ingredients, even in minute amount. A smart green sustainable spectrophotometric method was developed for simultaneous determination of Fluconazole (FLU) along with its official impurities B and C. The novel sequential dual amplitude difference (SDAD) technique succeeded in resolving the severe overlapping between the three compounds and restoring their respective mother spectrum. According to international Council of Harmonization (ICH) guidelines, the developed method is accurate, precise, and selective with linearity range (50–500 µg/mL) for FLU, (0.5–6 µg/mL) for impurity B and (0.05–0.6) for impurity C. The method was successfully applied to three pharmaceutical preparations without interference from excipients. In addition, the proposed method was assessed and compared with reported chromatographic methods for its green character, sustainability, and practicality, using five tools. The spectrophotometric method was found to be the greenest with the least volume of solvents used and waste produced, moreover, it is the most practical/sustainable method. Besides, the toxicity profiling of the two impurities was predicted using two computational databases: preADMET and pKcsm. After reviewing literature, no previous analytical method to determine FLU and its two official impurities using spectrophotometry was reported.

A Green Method for Preparation of Cyanidin-3-glucoside from Carissa carandas Fruits and α-Glucosidase Inhibitory Activity Evaluation

A Green Method for Preparation of Cyanidin-3-glucoside from Carissa carandas Fruits and α-Glucosidase Inhibitory Activity Evaluation

Rapid Growth of Ag Nanoparticles on MoS2 Surfaces: An Effective Method to Improve Fire Safety and Mechanical Properties of Ethylene‐Vinyl Acetate Composites

ABSTRACTTwo‐dimensional molybdenum disulfide (MoS2) nanosheets are promising nanofillers for improving the properties of polymers, but low‐cost, facile and green methods need to be further explored to meet the requirements for large‐scale production of modified MoS2 nanosheets. Here, we developed a new idea that is, to prepare MoS2@Ag by modifying the surface of MoS2 using radiative reduction. It is noteworthy that the modified MoS2@Ag can effectively improve the mechanical strength of ethylene‐vinyl acetate (EVA) composites. In addition, the addition of MoS2@Ag was able to substantially improve the flame‐retardant properties of EVA, resulting in a significant reduction in the amount of heat and smoke released from its combustion. When two parts of MoS2@Ag were added, the peak heat release rate and total smoke release of EVA/2.0MoS2@Ag composites were reduced by 29.7% and 39.2%, respectively, compared with that of pure EVA. At the same time, the toxic gases (e.g., CO) produced by the combustion of EVA composites were significantly reduced, which indicates an improvement in their fire safety.

Eco-Friendly TiO2 Nanoparticles: Harnessing Aloe Vera for Superior Photocatalytic Degradation of Methylene Blue

In recent years, the contamination of aquatic environments by organic chemicals, including dyes such as methylene blue (MB), Congo red, and crystal violet, has become an increasing concern, as has their treatment. In this work, titanium dioxide nanoparticles (TiO2 NPs) were studied for their photocatalytic performance by measuring the degradation of MB under UV light. TiO2 NPs were synthesized using two synthetic processes optimized in this study: a green method, namely leveraging the natural properties of Aloe vera leaf extract; and a conventional approach. The resulting NPs were thoroughly characterized using X-rays Diffraction (XRD), Transmission Electron Microscopy (TEM), Scanning Electron Microscopy (SEM), Brunauer–Emmett–Teller (BET), UV–Vis and ζ-potential analysis. The TiO2 NPs synthesized by the green method demonstrated a degradation efficiency of (50 ± 3)% after 180 minutes, which was significantly higher than the (16 ± 3)% achieved by NPs synthesized through the conventional route. Moreover, the reaction rate constant for the green-synthesized TiO2 NPs was found to be approximately five times greater than that of the conventionally synthesized NPs. These results open up a new scenario in the pollution removal strategy research, using resources accessible in nature to synthesize NPs with high photocatalytic activity, which could also be useful for other applications, such as hydrogen production.

Green synthesis of nickel-integrated chitosan-modified CeO2 nanocatalyst for the efficient hydrogenation of 4-NP and azo dyes.

This paper reports the green synthesis and characterization of nickel-integrated chitosan-modified cerium oxide (CHS-CeO2@Ni) nanocatalyst aimed at the efficient hydrogenation of 4-nitrophenol (4-NP) and the reduction of azo dyes such as methyl orange (MO) and Congo red (CR). The CHS-CeO2@Ni nanocatalyst was synthesized via a green method, where Arnebia benthamii plant extract was used as a reducing agent to deposit nickel nanoparticles onto the CHS-CeO2 nanocomposite. Results confirmed the successful integration of Ni into the CHS-CeO2 matrix, resulting in a highly crystalline, mesoporous structure with a substantial surface area of 78.447 m2/g. The catalytic activity was evaluated in reducing MO, CR, and 4-NP in the presence of NaBH4. The nanocatalyst exhibited remarkable efficiency, reducing MO and CR in 16 and 14 min, respectively, with pseudo-first-order rate constants of 0.173 min-1 and 0.179 min-1. For 4-NP, complete reduction to 4-aminophenol was achieved within 19 min, with a rate constant of 0.112 min-1. The enhanced catalytic performance is attributed to the synergistic interaction between cerium oxide and nickel nanoparticles, highlighting the potential of CHS-CeO2@Ni as a sustainable solution for environmental remediation.

Improved adaptive genetic algorithm for dynamic multi-specification one-dimensional cutting problem

Rebar is an essential material in the construction of bridges and houses. Rebar cutting is an important link in rebar processing, but it is usually completed by manual experience, which is not only time-consuming, but also causes serious waste and reduces the economic benefits. As the country vigorously promotes the green construction method, the traditional rebar cutting method is difficult to meet the development requirements. So dynamic multi-specification one-dimensional cutting problem is studied in this paper. A mathematical model aiming at the maximum utilization rate of raw material is established, and an improved adaptive genetic algorithm is proposed. Large-scale, small-scale, single-specification masterbatch and multi-specification masterbatch are selected for simulation experiments, respectively. The results show that the proposed algorithm can deal with both large- and small-scale multi-specification or single-specification masterbatch cutting problems. Moreover, the algorithm has good performance in solving accuracy and convergence speed, which verifies its feasibility, effectiveness, and stability. Finally, aiming at the problem of dynamic insertion of orders, one-dimensional cutting software is developed, rapid and real-time cutting of rebars is realized, and the utilization rate of building rebars is improved, which plays a positive role in promoting the high-quality development of construction industries such as bridges.