One-pot Hydrothermal Method Research Articles

Zn doping induces rich oxygen vacancies in δ-MnO2 flower-like nanostructures for impressive energy density coin cell supercapacitor

In this work, Zn-doped δ-MnO2 (ZnMO) flower-like nanostructures on carbon fibers are synthesized by one-pot hydrothermal method. It is found that insertion of Zn ions induces oxygen vacancy defects, increase in active sites and conductivity of δ-MnO2 (MO) structure. These features making ZnMO structure an excellent candidate for the fabrication of electrode material for supercapacitors. It has been revealed that ZnMO@CC electrode delivered an enhanced specific capacitance of 667 F g−1 at a current density of 1 A g−1 as compared to the pristine δ-MnO2 and previously reported nanostructures. The developed asymmetric coin cell supercapacitor (ZnMO//AC) obtained a specific capacitance of 116 F g−1 at 1 A g−1 and achieved an outstanding energy density of 71.5 Wh kg−1 at a power density of 1067.1 W kg−1. Moreover, the device retains its initial capacitance of 92 % after 8000 cycles at 8 A g−1. These results suggest that ZnMO could be an emerging electrode material for the fabrication of high-performance supercapacitors for practical applications. This research hunts for new visions for the preparation of MnO2-based material by doping strategy for energy storage applications, especially supercapacitor.

Flower-like CoSe2/N, P-doped carbon microspheres accommodated on carbon nanosheets for high-performance potassium-ion batteries

Transition metal selenides (TMSs) have emerged as promising electrode materials for potassium-ion batteries (PIBs), whereas the large volume expansion and sluggish reaction kinetics have seriously hindered the cycle life and rate performance. Herein, a hierarchical composite of flower-like CoSe2/N, P-doped carbon microspheres accommodated on carbon nanosheets (CoSe2-NPC@CNS) was rationally fabricated as the anode for PIBs through a one-pot hydrothermal and subsequent selenization method. The intimate hybridization of CoSe2/N, P-doped carbon microspheres can effectively alleviate the volume expansion of CoSe2 during charge-discharge cycles, and the ultrathin carbon nanosheets derived from fluid catalytic cracking (FCC) slurry serves as a highly conductive and buffered substrate. By robustly merging them together, the interconnected hierarchical nanoarchitecture with exposed active sites achieves promoted potassium storage capacity, electrochemical reaction kinetics, and structural stability. As a result, the PIBs with CoSe2-NPC@CNS anode deliver high reversible capacities of 320.8 mAh g−1 after 100 cycles at 0.1 A g−1 and 213.9 mAh g−1 after 850 cycles at 1.0 A g−1, excellent rate capability (188.8 mAh g−1 at 5 A g−1), and enhanced pseudo-capacitive contribution rate of 88.7 %. This work offers valuable insight into the rational design and development of hierarchical anode materials with high performance for PIBs and beyond.

Fluorescence response of metalo-hydrogen-bonded organic framework (MHOF) with room temperature phosphorescence to organic pollutants

For health, environmental and safety reasons, it is necessary to conduct highly sensitive detection of organic contaminant antibiotics (sulfathiazole) and nitro explosive drugs (o-nitroaniline) in water. In this work, metal-hydrogen bonded organic framework (MHOF), {[Co(Ad)2(H2O)4]·(H2L)·2.5H2O}n (1), was synthesized by a one-pot hydrothermal method with 2,6-bis(3,5-dicarboxyphenoxy) pyridine (H4L) and adenine (Ad). This MHOF shows a 4-fold interpenetrated three-dimensional (3D) network structure. Importantly, 1 has excellent fluorescence properties and can be used as fluorescent chemical sensor to detect sulfathiazole (STZ) and 2-nitroanilin (2-NA) with limit of detection (LOD) 203 ppb and 6.8 ppb, respectively. By UV-vis absorption/emission spectroscopic measurements and DFT calculations, it is found that photoinduced electron transfer (PET) and fluorescence resonance energy transfer (FRET) are two potential quenching processes. This is the first report of metal-hydrogen bond organic frameworks (MHOFs) as a promising new fluorescent chemical sensor for the detection of organic pollutants in water.

Highly stable Cu catalyst embedded in N-doped carbon microsphere for hydrogenation of dimethyl oxalate to methyl glycolate

Cu catalyst often subjects to low stability due to chemical state transformation during carbon-oxygen hydrogenation reaction. In the present work, the copper catalysts embedded in N-doped carbon microsphere (Cu@NC) were fabricated by one-pot hydrothermal method and applied in dimethyl oxalate (DMO) hydrogenation to methyl glycolate (MG). The optimized Cu@10NC catalyst exhibited an excellent stability with DMO conversion of 80.1% and MG selectivity of 80.3% during 220 h long-term evaluation under 1.9 MPa, 210 °C, H2/DMO molar ratio of 80 and WHSV of 0.8 gDMO·gCu−1·h−1, beneficial from the stable Cu+ ratio and confinement effect of carbon support during the reaction. The Cu dispersion and Cu+ proportion can be finely controlled by varying the N-doping content due to the enhanced interaction between Cu and carbon microspheres. Particularly, graphitic-N is primarily accountable for Cu dispersion, while pyridinic-N is dominantly responsible for the stabilization of Cu+ species.

Phosphorus Modulated Peroxidase-Like Activity of Carbon Dots for Colorimetric Detection of Acid Phosphatase.

The precise regulation of nanoenzyme activity is of great significance for application to biosensing analysis. Herein, the peroxidase-like activity of carbon dots was effectively modulated by doping phosphorus, which was successfully employed for sensitive, selective detection of acid phosphatase (ACP). Phosphorus-doped carbon dots (P-CDs) with excellent peroxidase-like activity were synthesized by a one-pot hydrothermal method, and the catalytic activity could be easily modulated by controlling the additional amount of precursor phytic acid. P-CDs could effectively catalyze the oxidation of colorless 3,3',5,5'-tetramethylbenzidine (TMB) to blue TMB oxidation products in the presence of hydrogen peroxide. While ACP was able to catalyze the hydrolysis of L-ascorbyl-2-phosphate trisodium salt (AAP) to produce ascorbic acid (AA), which inhibited the peroxidase-like activity of P-CDs, by combining P-CDs nanoenzymes and ACP-catalyzed hydrolysis the colorimetric method was established for ACP detection. The absorbance variation showed a good linear relationship with ACP concentration in the range of 0.4-4.0 mU/mL with a limit of detection at 0.12 mU/mL. In addition, the method was successfully applied to detect ACP in human serum samples with recoveries in the range of 98.7-101.6%. The work provides an effective strategy for regulating nanoenzymes activity and a low-cost detection technique for ACP.

One-pot hydrothermal method of green-synthesized nitrogen-doped carbon quantum dots for ultra-sensitive dual detection of tannic acid and Hg2+ ions

One-pot hydrothermal method of green-synthesized nitrogen-doped carbon quantum dots for ultra-sensitive dual detection of tannic acid and Hg2+ ions

Dual Applications of Cobalt-Oxide-Grafted Carbon Quantum Dot Nanocomposite for Two Electrode Asymmetric Supercapacitors and Photocatalytic Behavior.

Carbon materials, such as graphene, carbon nanotubes, and quantum-dot-doped metal oxides, are highly attractive for energy storage and environmental applications. This is due to their large surface area and efficient optical and electrochemical activity. In this particular study, a composite material of cobalt oxide and carbon quantum dots (Co3O4-CQD) was prepared using cobalt nitrate and ascorbic acid (carbon source) through a simple one-pot hydrothermal method. The properties of the composite material, including the functional groups, composition, surface area, and surface morphology, were evaluated by using various methods such as ultraviolet, Fourier transform infrared, X-ray diffraction, Raman, X-ray photoelectron spectroscopy, Brunauer-Emmett-Teller, scanning electron microscopy, and transmission electron microscopy analysis. The electrochemical performance of the Co3O4-CQD composite has been studied using a three-electrode system. The results show that at 1 A g-1, the composite delivers a higher capacitance of 1209 F g-1. The asymmetric supercapacitor (Co3O4-CQD//AC) provided 13.88 W h kg-1 energy and 684.65 W kg-1 power density with a 96% capacitance retention. The Co3O4-CQD composite also demonstrated excellent photocatalytic activity (90% in 60 min) for the degradation of methylene blue dye under UV irradiation, which is higher than that of pristine Co3O4 and CQD. This demonstrates that the Co3O4-CQD composite is a promising material for commercial energy storage and environmental applications.

Bimetallic FeOx-TiO2@Carbon hybrid structure materials with notable peroxidase enzyme mimics applied toone-step colorimetric detection of glucose.

FeOx-TiO2@Carbon hybrid structure materials (FeOx-TiO2@CHs) with high peroxidase (POD)-like activity have been preparedby one-pot hydrothermal method. Based on the excellent POD activity of FeOx-TiO2@CHs, one pot colorimetric detection for glucose was constructed by using TMB as substrate with the synergistic reaction of glucose oxidase; the linear range and the limit of detection (LOD) are 25 ~ 1000 and 1.77µM, respectively. Using this method, the glucose in serum real samples was detected with satisfactory results, and the results are consistent with that of the glucometer method in the hospital. The recovery in diabetic and artificial urine samples was 95.71 ~ 104.67% and 99.01 ~ 103.16%, respectively. Themechanism of the catalytic colorimetric reaction was also investigated by multiple measurements, and the results indicated that superoxide anions (O2•-) between FeOx-TiO2@CHs and substrate play a main role, but a small quantity of hydroxyl radical •OH and singlet oxygen 1O2 is also generated simultaneously. The one-pot reaction method is simple and fast; the detection process only requires a simple mixing, which is suitable for application in special environment.

In-situ constructed solvated carbon quantum dot clusters to achieve uniform Zn plating in aqueous zinc ion batteries

Zinc ion batteries (ZIBs) have become the most competitive candidates for the next-generation energy storage systems due to its low-price, good safety and high theoretical capacity. However, the uncontrollable dendrite growth and parasitic side reactions still hinder the practical application of the zinc ion batteries. Herein, a hybrid functionalized carbon quantum dots (FCQDs)/ZnSO4 electrolyte is in-situ synthesized via a simple one-pot hydrothermal method with glucose as precursor. The created FCQDs possess abundant anionic groups like hydroxyl, carboxyl and sulfonic acid groups, and those anionic groups can strongly absorb Zn2+ ions and then the FCQDs, Zn2+ and water molecules together generate a special solvation structure of solvated carbon quantum dot clusters [FCQDsZnx(H2O)y]2x+. The solvated FCQDs clusters can help to in-situ induce the uniform Zn deposition through a co-plating of Zn atoms and the functionalized FCQDs. Additionally, this unique solvation structure promotes easier dissociation of solvation water molecules, thus decreasing the de-solvation energy. The lower de-solvation energy barrier can help to restrain the water decomposition and the related by-products. Benefiting from the construction of this unique solvated FCQDs clusters, the hybrid electrolyte with FCQDs endows a better performance of both Zn||Zn symmetric cells and full ZIBs.

Nitrogen and Sulfur co-doped Carbon dots as an "on-off-on" Fluorescent Sensor for the Detection of Hg2+ and Ampicillin.

Herein, a fluorescent "on-off-on" nanosensor based on N,S-CDs was developed for highly precise and sensitive recognition of Hg2+ and ampicillin (AMP). Nitrogen and sulfur co-doped carbon dots with blue fluorescence were synthesized by one-pot hydrothermal method using ammonium citrate and DL-methionine as precursors. N,S-CDs exhibited a surface abundant in -OH, -COOH, and -NH2 groups, aiding in creating non-fluorescent ground state complexes when combined with Hg2+, leading to the suppression of N,S-CDs' fluorescence. Subsequent to additional AMP application, the mixed system's fluorescence was restored. Based on this N,S-CDs sensing system, the thresholds for detection for AMP and Hg2+ were discovered to be 0.121 µM and 0.493 µM, respectively. Furthermore, this methodology proved effective in identifying AMP in real samples of tap and lake water, yielding satisfactory results. Consequently, in the area of bioanalysis in intricate environmental sample work, the sensing system showed tremendous promise.

Photocatalytic enhancement of n-p-n ternary heterostructure of BiVO4/rGO/BiOBr for RhB degradation under visible light irradiation

Herein, the ternary phase of n-type BiVO4/p-rGO/n- BiOBr (3%rGO/1V2Br) was synthesized by one-pot hydrothermal method and firstly evaluated for its potential application in photocatalysis. The 3 %rGO/1V2Br shows the highest photocatalytic efficiency of 100 % compared to that of the binary BiVO4/BiOBr (1V2Br), single BiVO4, and BiOBr phases of 87 %, 25 %, and 55 % respectively. Scanning electron microscope and X-ray diffraction results suggest successful preparation of the ternary BiVO4/rGO/BiOBr phase and close contacts among the three components. Chemical interactions at heterointerface, supported by new V-C bond formation and binding energy shift from X-ray photoelectron spectroscopy study, could facilitate charge transfer and promote charge separation as evidenced by photoluminescence and photoelectrochemical studies. Photocatalytic mechanism and energy band alignment are proposed based on Mott-Schottky, UV–vis diffuse reflectance, and scavenger trapping experiments.

Facile preparation of flower-like NiO/In2O3 composite for sensitively and selectively detecting NO2 at room and lower temperatures

As a typical n-type semiconductor, In2O3 is often used in gas sensors due to the wide band gap, adjustable morphology and good electrical conductivity. However, the pristine In2O3 has some disadvantages, such as higher operating temperature, poor sensing performance to low concentrations of gases. In this work, we fabricated flower-like NiO/In2O3 composites via a facile one-pot hydrothermal method, and investigated their gas sensitivity to various concentrations of NO2 at different temperatures. The responses (Rg/Ra) of NiO/In2O3-0.2 composite to 0.1–80 ppm NO2 are 2.5 ∼ 5.8 times higher than those of pristine In2O3 at the optimum temperature of 150 °C, respectively. The room-temperature response of the NiO/In2O3-0.2 composite to 20 ppb NO2 is 1.82 with the limit of detection (LOD) of 5 ppb, indicating great application potential for NO2 detection. Moreover, the NiO/In2O3-0.2 composite has the excellent reproducibility, good long-term stability and selectivity. The specific morphology with larger surface area and the formation of p-n heterojunction synergistically enhance the sensing properties of NiO/In2O3 composite, demonstrated by DFT calculation and experiments. This work provides a facile fabrication of flower-like In2O3–based composites for room-temperature detection of ppb-level NO2.

Enhanced photo-Fenton degradation of dyes under visible light with recyclable γ-Fe2O3/CQDs: Catalyst preparation, performance and mechanism insight

A low band gap and visible light-responsive heterogeneous Photo-Fenton catalyst of γ-Fe2O3/CQDs micron composite was prepared under the one-pot hydrothermal method. The Photo-Fenton degradation of γ-Fe2O3/CQDs towards dye solution of rhodamine B(RhB), methyl blue (MB), and methyl orange (MO) was studied comparatively with α-Fe2O3. The γ-Fe2O3/CQDs exhibited remarkable catalytic performance for various dyes and with a first-order rate (k) of 14 times higher than that of initial α-Fe2O3 with a low concentration of H2O2 of 0.049 mmol. L−1 and a wider pH range of 3.1–7.1. The microstructure of the compounds was observed by XRD, SEM, TEM, FT-IR, and XPS characterization results suggested that the γ-Fe2O3/CQDs nanocomposite was formed through the stable Fe–O–C bonds, thus, the band gap decreased, and it is more favorable for the distance of holes and electrons. The free radical trapping experiment and EPR analysis indicated that •OH and 1O2 were the major active species during the typical photo-Fenton reaction. What's more, the γ-Fe2O3/CQDs also exhibited good stability and magnetic properties. DFT conclusion shows that the mechanism of the potential determination step (PDS) on α-Fe2O3(220) is the cleavage of H2O2 with an energy barrier of only 0.08 eV, which is 0.54 eV lower than that of OH* on γ-Fe2O3(220). Thus it can be deemed that γ-Fe2O3/CQDs perform much higher catalytic activity for the dissociation of H2O2 than α-Fe2O3. This work gives a feasible and economical countermeasure of visible light Photo-Fenton dispose of dye wastewater with a recyclable magnetic γ-Fe2O3/CQDs micron catalyst.

Negative permittivity and permeability behaviour of SrFe12O19/rGO metacomposite for microwave absorption in 2–18 GHz range

Double-negative performance has played a significant role in electronic applications owing to its both permeability and permittivity negative values. Microwave absorption material has a substantial role in electromagnetic shielding, radar absorption, stealth applications, etc. Herein, a novel double-negative metacomposite, SrFe12O19/rGO, was designed by a simple one-pot hydrothermal method, and the microwave absorption properties of the material were studied in the microwave region from 2 to 18 GHz using VNA analysis. The structural and morphological studies were analysed using XRD, FT-IR, and SEM instrumentation techniques and the magnetic property of the material was studied using VSM analysis. Both studies confirmed the hard magnetic nature of the material. The particle sizes of SrFe12O19 and SrFe12O19/rGO measured from XRD are 55.60 nm and 41.55 nm, respectively. Hexagonal plate-like morphology were observed from FESEM images. The coercivity of SrFe12O19/rGO increased, and the magnetocrystalline anisotropy was changed due to the decrease in particle size. The magnetic saturation value decreases due to the presence of non-magnetic rGO. The resultant SrFe12O19/rGO metacomposite shows negative permittivity and permeability values. The minimum reflection loss values observed for pure and rGO-decorated strontium ferrites are −28.49 dB at 7.76 GHz and −23.78 at 11.04 GHz, respectively. In addition to experimental results, simulation studies were also performed to study the reflection loss with matching thickness using a quarter wavelength mechanism. The results show that this composite can be employed as a left-handed metamaterial that finds applications in absorption, antennas, sensors, wireless power transfer systems, etc. The left-handed metamaterial can shift the frequency region from a lower to a higher frequency region. The rGO decorated metacomposite is a promising material for microwave absorption at higher frequency regions.

Graphene oxide-wrapped tungsten trioxide for adsorptive removal of methylene blue

Graphene oxide (GO) is a graphene derivative, but different from graphene (Gr), it has a high dispersibility and a high potential to composite with other materials. In order to reveal the effect of graphene oxide (GO) on the enhancement of methylene blue (MB) adsorption, in this study, different GO contents (0, 0.3, 0.5, and 0.7 wt%) were in situ composited with tungsten oxide nanostructures prepared by a simple one-pot hydrothermal method. The physicochemical analysis implies that the in situ compositing helps create a strong interaction between GO and platform material - tungsten oxide. As the GO content increased from 0 to 0.7 wt%, the average crystallite size decreased slightly from 26.7 nm to 24.0 nm, while the microstrain increased from 0.31 to 0.53 %, respectively. Both pristine and nanocomposite samples showed good adsorption capacity with methylene blue (MB), which increases with GO content in the nanocomposites. The sample composited with 0.7 wt% GO showed the highest adsorption activity with the highest adsorption capacity of 76.1 mg/g after 150 min at the optimum condition (15 mg absorbent and 100 ml of MB 30 mg/ml). The MB adsorption kinetics is consistent with the second-order kinetics model with the maximum rate of 2.3 × 10−3 g/mg·m at the optimum condition, while the adsorption isotherm is well described by the Langmuir model with the Langmuir adsorption constant of 0.37 l/mg. These results show that the one-pot hydrothermal method is a facile and efficient method for in situ preparing the Gr-based nanocomposite absorbent.

Grain-refining Co0.85Se@CNT cathode catalyst with promoted Li2O2 growth kinetics for lithium-oxygen batteries

Highly active cathode catalysts for efficient formation/decomposition of Li2O2 are essential for the performance improvement of lithium-oxygen batteries (LOBs). In this study, a grain-refining Co0.85Se catalyst with a lattice spacing of 2.69 Å of (101) plane closely matching with the (100) plane (2.72 Å) of Li2O2 was applied for high-performance LOBs. Highly (101) plane exposed Co0.85Se@CNT was synthesized by a simple one-pot hydrothermal method. The Co0.85Se with the lattice matching effect not only led to the efficient conversion and polarized growth of Li2O2, but also prevented the formation of byproducts. Density functional theory (DFT) calculations reveal that Co0.85Se (101) plane has the intrinsic catalytic ability to generate/decompose Li2O2 during ORR/OER process, due to its homogeneous electron distribution, suitable adsorption energy, and promoted Li2O2 growth kinetics. As a consequence, the (101) plane highly exposed Co0.85Se@CNT-80 electrode exhibited remarkable cycle stability over 2400 h at 100 mA/g and 290 cycles at 500 mA/g, which is about 2 times longer than other electrodes.

Controlled Assembly of a Dawson-like Antimoniotungstate-Supported Trefoil-type Trimer with Good Proton Conductivity Performance.

With the excellent properties of POM in the field of proton conductivity, the preparation of POM-based proton-conductive materials has burst into life. Herein, an unprecedented Sb-templated all-inorganic trimer Na8H18.64[(SbW14O52)3(Sb2W6.12Ru5.88O18)]·85H2O (1), which is based on tetravacant Dawson-like [SbW14O52]17- blocks and exhibits a trefoil type with D3 symmetry, has been successfully designed and synthesized by the assembly of simple materials with a one-pot hydrothermal method under acidic conditions. Also, compound 1 is systematically characterized by single-crystal X-ray diffraction, PXRD, ESI-MS, IR spectroscopy, UV-vis, elemental analysis, and TGA. Crystal structure data analysis demonstrates that compound 1 is constructed by a hexagonal prismatic heterometallic {Sb2W6.12Ru5.88O18} core and three equivalent {SbW14} units bridged through μ2-O atoms in periphery. Subsequently, further property experiments show that compound 1 exhibits high proton conductivity with a conductivity value (σ) of 3.07 × 10-2 S cm-1 at 75 °C and 80% relative humidity (RH). The activation energy of compound 1 evaluated by the Arrhenius plots is 0.22 eV, which indicates that the Grotthuss mechanism is dominant during the process of proton transfer.

Preparation of Fe7S8/C composite by one-step hydrothermal method for fast efficient lithium storage with long cycle life

High-capacity metal sulfide electrode materials for lithium storage have received extensive attention for the booming battery technology. However, metal sulfide electrodes have poor reaction kinetics in the light of capacity delivery and rate performance. To increase Li-ion storage, an easy one-pot hydrothermal method was presented to prepare a Fe7S8/C composite for lithium-ion batteries anode. The homogeneous doping of nitrogen in the carbon layer is beneficial to the rapid and uniform growth of Fe7S8 nanoparticles. The Fe7S8/C composite provides a strong honeycomb network with stable interfacial bonds by the strong chemical bonds between Fe7S8 and C, which can ease mechanical tension to ensure the stability of the structure during cycling. So the Fe7S8/C composite material has long-term stability (466.8 mAh g−1 at 2C after 2000 cycles). The impressive electrochemical behaviors can be ascribed to enhanced reaction kinetics, where unique carbon network matrix plays a dual role of conductive substrate and channels for electron and ion transport, respectively.

Synchronous activation of praseodymium vanadate/graphitic carbon nitride nanocomposite: A promising electrode material for detection of flavonoid– Quercetin

Flavonoids or phenolic compounds are part of the daily intake of every human being. Though they are positive traders for metabolism, excessive intakes bring about detrimental impacts on human health. Herein, the anti-cancer capacitive nature quercetin (Qc) was electrochemically detected through the rare earth metal-based sphere like praseodymium vanadate (PrVO4) entrapped graphitic carbon nitride (g-CN) as electrode modifiers. The nanocomposite was prepared by the one-pot hydrothermal method and characterized by phase compositional and morphology-based techniques. The existing synergistic nature between the PrV@g-CN (praseodymium vanadate@graphitic carbon nitride) makes them have an enhanced electrochemical response towards the Qc than the individual material. The obtained cyclic voltammogram and differential pulse voltammogram profile show one major oxidation peak which is attributed to the conversion of quercetin to quercetin-o-quinone. The PrV@g-CN/GCE (GCE- glassy carbon electrode) shows a good electrochemical active surface area (A = 110 cm2) and linear range between 0.05 and 252.00 μM with a LOD (limit of detection) of 0.002 µM. Moreover, the PrV@g-CN/GCE exhibits good current retention (94.76 %) around 14 days and appreciable repeatability (RSD- 0.5 %) and reproducibility (RSD- 1.3 %) towards the Qc. The real-time implementation of the proposed sensor exhibits a good recovery range towards the black tea (95.00–98.10 %) and green tea (97.80–99.60 %).

Achieving the conversion from Room-Temperature phosphorescence to photothermal properties by Carbon-Regulated bandgap

Bandgap tunability plays an important role in controlling the photophysical properties of semiconductor material. In this work, we propose a powerful carbon component engineering strategy for regulating the optical bandgap of scandium/cysteine functional materials (Sc/Cys-FMs) that are synthesized by a facile one-pot hydrothermal method. The band structure of Sc/Cys-FMs is closely related to the Cys ligands. As Cys amount rises, the obtained Sc/Cys-FMs exhibit the red-shifted room-temperature phosphorescence (RTP) emission from Sc/Cys-FMs-50 (3.01 eV) to Sc/Cys-FMs-150 (2.14 eV), accompanied by a decrease in quantum efficiency and an increase in lifetime. Meanwhile, the Sc/Cys-FMs show a unique time-dependent phosphorescence color (TDPC) phenomenon, with a dynamic transition of RTP color from yellow to green as the decay time prolongs because of the emission-dependent lifetime. As the amount of Cys further increases, the bandgap can be continuously reduced to 1.88 eV (Sc/Cys-FMs-300) and 1.56 eV (Sc/Cys-FMs-600), causing the quenching of RTP emission and significantly enhanced photothermal properties. The continuously decreasing bandgap has been proven to be directly ascribed to the increase of carbon component in Sc/Cys-FMs. Considering the TDPC properties, Sc/Cys-FMs can be well used for dynamic phosphorescent anti-counterfeiting. This work not only develops a scalable method for preparing functional materials with superior RTP and photothermal properties, but also proposes the carbon component engineering strategy to achieve bandgap tunability of materials.