Materials
·
2026
·Vol. 19
·期 12
·2471
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IF 3.7
Xiufen Liao,Zhilin Gong,Zhengu Chen,Junxiang Lai,Qiumei Jiang,Maomi Zhao,Shengxun Yao,Jing Xiang
Developing an environmentally friendly material with dual functionality of corrosion monitoring and inhibition is crucial for reducing economic losses. Herein, dual-function phytic acid carbon dots (PA-CDs) were prepared with a hydrothermal treatment method for corrosion monitoring and inhibition. The as-prepared PA-CDs exhibited a distinct color change from brown-yellow to wine-red immediately in the presence of OH−, and H+can restore the color of the PA-CDs-OH−system from wine-red to brown-yellow. Inspired by the above phenomenon, a visible RGB-based colorimetric sensor was fabricated by combining PA-CDs coatings with the self-made RGB-sensing device to detect OH−/H+during metal corrosion. In addition, PA-CDs had excellent corrosion inhibitory properties for Q235 steel hanging sheets in hydrochloric acid solutions, and the corrosion inhibition efficiency reached 96.40%. The excellent corrosion monitoring and inhibition properties demonstrate the potential application of the PA-CDs in engineering practice.
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高影响因子
Journal of the Australian Ceramic Society
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2026
·
IF 2.6
Chen Yuan,Wang Shu,Li Xin
Heavy metal pollution is a globally environmental crisis as the demand for electronic products being steadily on the increase. In our work, a novel transition metal Sn-doping strategy has been proposed to reconstruct the valence band of CdS by s-p orbit hybridization. An easy and mild solvothermal method was employed to synthesize the Sn-doped CdS nanoparticles, in which Sn 2+ ions substitute Cd 2+ ions to occupy CdS lattice. This Sn-doping modification effectively narrows the bandgap and regulates the energy band structure of CdS. In this case, it has caused an extension of the visible light absorption range, an enhancement of photogenerated carrier separation efficiency, and an improvement of thermodynamic potential, as well as a photostability from photocorrosion. For the optimization effect of Sn doping, the 4 at% Sn-doped CdS sample has performed the highest efficiency of photocatalytic reduction Cr (VI) degradation, achieving 84.8% Cr (VI) removal within 10 min, as 1.3 times higher than that of bare CdS. This research establishes an experimental framework for the advancement of efficient and stable nano-photocatalysts, with implications for band engineering in metal dichalcogenide semiconductors.
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CHEMICAL ENGINEERING SCIENCE
·
2026
·
IF 5.1
Binhao Shen,Xiaogang Huang,Xueqin Liu,Shiyu Zhang,Lechang Xu,Yong Zhang,Wenkun Zhu
This work successfully synthesized a series of ZnS/CdS photocatalysts (ZC) via one-step hydrothermal method, in which ZC-1 (Zn/Cd = 2:1) exhibited optimal photoreduction performances of hexavalent uranium (U(VI)). The experiments results demonstrated that the reaction rate constant of ZC-1 (k = 0.0174 min −1 ) was 4.49 and 23.51 times higher than those of pristine ZnS and CdS, respectively, confirming that the combination of ZnS and CdS was a feasible strategy for remarkably strengthening the activity of U(VI) photocatalytic reduction. Meanwhile, ZC-1 reached high removal efficiency of 80.18% with an initial U(VI) concentration as high as 180 mg/L, posing a considerable U(VI) extraction capacity of 1443.26 mg/g, which was larger than numerous photocatalysts. The wonderful performances of ZC-1 might be due to its well-dispersed morphology and optimized band structure, which not only provided rich active sites, but also endowed ZC-1 with enhanced capacity of visible light harvesting and photogenerated electron-hole separation. In addition, ZC-1 demonstrated exceptional anti-interference ability and outstanding photocatalytic stability, maintaining a high U(VI) photoreduction rate of over 88% after 5 cycles. The mechanistic study showed that the effective extraction efficiency of U(VI) for ZC-1 was ascribed to the “cooperative capture and directional reduction” mechanism: The built-in electric field concentrated reductive electrons at catalytic active sites to facilitate the U(VI) reduction process, while the well-dispersed of ZC-1 synergistically enhanced UO 2 2+ capture. This study established a novel design strategy and fundamental theoretical framework for developing efficient and stable photocatalytic materials to deal with U(VI) pollution.
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TALANTA
·
2026
·
IF 6.7
Yuanjing Sun,Yanli Zhang,Wenfeng Zhuge,Yuxia Liu,Zhiying Yu,Jinyun Peng
Rapid and reliable determination of rifampicin (RIF) is important for dose optimization and therapeutic drug monitoring during tuberculosis treatment. Herein, In 2 O 3 /CdS heterojunctions were fabricated through calcination followed by in situ CdS growth and employed as an efficient photoactive interface for photoelectrochemical RIF sensing. The In 2 O 3 /CdS heterojunction enhanced photoinduced charge separation and provided an amplified photocurrent background, while RIF induced a concentration-dependent photocurrent quenching response for signal-off PEC quantification. Under optimized conditions, the proposed sensor showed a linear response to RIF over the concentration range of 0.010-75 μM, with a detection limit of 1.45 nM (S/N = 3). The sensor exhibited satisfactory selectivity against common coexisting substances, as well as good repeatability and storage stability. Accurate RIF quantification was further achieved in spiked human serum, urine, and pharmaceutical capsule samples, affording recoveries of 97.73% and 103.49% with relative standard deviations below 4.1%. This work provides a sensitive and reliable PEC platform for RIF determination in complex biological and pharmaceutical matrices.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2026
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IF 6.7
Limin Wang,Na Li,Lijing Qiu,Yuexin Chang,Ruixin Wang
For the photocatalytic system modified with transitional metals, an appropriate Schottky junction height is of crucial significance for efficiently promoting the transfer of photogenerated electrons and thus inhibiting the recombination of charge carriers. Hereinto, a nickel-cobalt bimetallic layered hydroxide (NiCo-LDH) lamina as transition layer was inserted between CdS and nitrogen-doped carbon-supported molybdenum carbide (MoC/NC) via a continuous two-step hydrothermal method, constructing a sandwich-structured MoC@LDH@CdS ternary composite photocatalyst. Thanks to such a meticulously designed nanoarchitecture of the as-obtained catalyst, the dual heterogeneous interface phases, CdS/NiCo-LDH and NiCo-LDH/MoC, are constructed on account of the crucial bridging role by NiCo-LDH. Therefore, not only a cascaded electron transfer channel is opened up following the path “CdS→NiCo-LDH→MoC”, but also the Schottky barrier of CdS/MoC is optimized, thus boosting the photo-electron transfer and suppressing the recombination of carriers. As a result, MoC@NiCo-LDH@CdS exhibits importantly promoted photocatalytic H 2 evolution performance, with a high rate of 44.77 mmol g −1 h −1 , which is a 13.3-fold and 1.39-fold over pure CdS and MoC@CdS, respectively. Moreover, the apparent quantum yield (AQY) reaches 3.01% at 420 nm. In addition, the photocatalytic durability of MoC@LDH@CdS is also greatly improved compared with the pristine CdS.
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OPTICS EXPRESS
·
2025
·Vol. 33
·期 12
·25756-25766
·
IF 3.3
Cong Li,Mingyang Han,Zheng Ren,Zepeng Wu,Yiming Chen,Yueqi Sun,Jialin Yang,Jiajia Zhou,Chunsheng Wang,Chunsheng Wang,Xu Li,Xu Li,Li Guan,Li Guan,Li Guan
Carbon dots (CDs), known for their notable fluorescence, cost-effectiveness, and eco-friendliness, hold substantial promise in versatile applications. However, existing one-pot strategies using biomass precursors predominantly yield blue-green emissive CDs, and achieving multicolor emission (especially red) remains challenging. In this work, four distinct fluorescent CDs (blue, green, yellow, and red) were synthesized via a one-pot solvothermal method using a synergistic natural/synthetic precursor system (Radix Saposhnikoviae and p-phenylenediamine). Systematic characterization revealed that the emission red shift (450 nm to 626 nm) is primarily governed by increased carbonization degree, as evidenced by the gradual enhancement of graphitic nitrogen content and sp2 domain ordering. The synthetic precursor (p-phenylenediamine) drives carbon core growth and graphitization, while the natural biomass (Radix Saposhnikoviae) facilitates multi-scale carbonization control, enabling color diversification in a single pot. By integrating the four CDs with silicone resin on a 395 nm UV chip, we fabricated a warm white LED with high-quality white light with CIE chromatic coordinates (0.36, 0.35) and correlated color temperature 4428 K, demonstrating their practical potential in solid-state lighting.
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高影响因子
Nanomaterials
·
2025
·Vol. 15
·期 21
·1661
·
IF 4.3
Bingqian Zu,Song Chen,Liping Bao,Yingjie Liu,Liang Wu
Phase and band gap engineering of (CdS)x(CuInS2)1−xnanomaterials is critical for their potential applications in photovoltaics and photocatalysis, yet it remains a challenge. Here, we report a precursor-mediated colloidal method for phase-control synthesis of alloyed (CdS)x(CuInS2)1−xnanocrystals with tunable band gap. When CuCl, InCl3, and Cd(AC)2·2H2O are used as the respective cation sources, wurtzite-structured alloyed (CdS)x(CuInS2)1−xnanocrystals can be synthesized with a tunable optical band gap ranging from 1.56 to 2.45 eV by directly controlling the molar ratio of the Cd precursor. Moreover, using Cu(S2CNEt2)2, In(S2CNEt2)3, and Cd(S2CNEt2)2as cation sources results in alloyed (CdS)x(CuInS2)1−xnanocrystals with a zinc-blende structure, demonstrating that the optical band gap of these nanocrystals can be compositionally tuned from 1.50 to 1.84 eV through precisely adjusting the molar ratio of Cd precursor. The results were validated through a comprehensive characterization approach employing XRD, TEM, HRTEM, STEM-EDS, XPS, UV-vis-NIR absorption spectroscopy, and Mott–Schottky analysis.
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高影响因子
APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Wenjie Guo,Yinghua Lan,Jien Niu,Wenwen Chen,Yanhui Zhang,Guoping Li,Juan Xu
A series of TiO 2 -CdS composites were prepared at room temperature using a one-step precipitation method, and an appropriate loading ratio was determined. Compared with pure TiO 2 and CdS, the composites exhibited superior photocatalytic degradation performance in the degradation of ciprofloxacin (CIP) and the reduction of Cr(Ⅵ). The incorporation of an appropriate amount of TiO 2 effectively suppressed the agglomeration of CdS nanoparticles and enhanced interfacial electron transfer, thereby significantly improving photocatalytic efficiency. Furthermore, a metal ion-mediated redox synergistic system was successfully constructed, achieving efficiency breakthroughs in the degradation of bisphenol A (BPA) and ibuprofen (IBU), which exhibited negligible photocatalytic activity under conventional conditions. The influence of different heavy metal ions on the photocatalytic degradation performance of organic pollutants were discussed. This provides a robust theoretical basis for the removal and resource recovery of refractory organic compounds.
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ENVIRONMENTAL RESEARCH
·
2026
·
IF 8.2
Hong Wu,Zhuoqi Liu,Tianrong Xiong,Xingyan Liu,Ying Chen,Min Fu,Yue Deng,Yongcheng Feng,Yuyu Fang,Bowen Lei,Youzhou He
Traditional methods for treating Cr(VI)-containing wastewater often encounter issues such as high energy consumption, susceptibility to secondary pollution and limited treatment efficiency. In contrast, photocatalytic technology harnesses solar energy to efficiently reduce Cr(VI) to less toxic Cr(III) under mild conditions, offering advantages including operational simplicity and environmental friendliness, thereby providing a superior alternative. This study proposes a dual MOF precursor strategy to synthesise Cd-ZIF@NH 2 -MIL-68 composite materials, which undergo further sulphurisation to successfully construct a CdS/In 2 S 3 type-II heterojunction photocatalyst with a hollow structure. This material exhibits a larger specific surface area, increased exposure of active sites and abundant heterojunction interfaces. This heterojunction achieves an ultrafast, 99.26% removal of Cr(VI) within only 18 minutes under LED illumination, exhibiting outstanding stability with 88.10% activity retention after five cycles. Systematic characterization, photoelectrochemical tests and density functional theory (DFT) calculations collectively confirm that the successful band engineering in CdS/In 2 S 3 induces the formation of a type-II heterojunction, thereby significantly facilitating the efficient separation and migration of photogenerated charges. The combination of radical trapping experiments and electron paramagnetic resonance (EPR) spectroscopy identifies photogenerated electrons (e - ) and superoxide radicals (·O 2 - ) as the predominant reactive species. This work provides new insights for designing highly efficient MOFs-derived heterojunction photocatalysts for the rapid remediation of Cr(VI) pollution.
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ELECTROCHIMICA ACTA
·
2017
·
IF 4.798
Jimin Du,Huiming Wang,Mengke Yang,Kaidi Li,Lixin Zhao,Guoyan Zhao,Sujuan Li,Xiaolei Gu,Yalan Zhou,Le Wang,Yating Gao,Weimin Wang,Dae Joon Kang
Efficient production of H 2 via solar-light-driven water splitting by a semiconductor-based photocatalyst without noble metals is crucial owing to increasingly severe global energy and environmental issues . However, many challenges, including the low efficiency of H 2 evolution, low solar light absorption , excited electron–hole pair recombination, and slow transport of photoexcited carriers, must be resolved to enhance the H 2 photoproduction efficiency and photocatalyst stability. Here, a two-step method is used to synthesize advanced H 2 -generating photocatalysts consisting of pyramid-like CdS nanoparticles grown on a porous TiO 2 monolith, which show promising photocatalytic activity for the hydrogen evolution reaction . Furthermore, the stability of the photocatalysts is examined through long-term tests to verify their good durability. Without noble metals as cocatalysts , the photocatalyst can reach a high H 2 production rate of 1048.7 μmol h −1 g −1 under UV–vis irradiation when the ratio of the CdS nanoparticles to TiO 2 is 5 mol%. This unusual photocatalytic activity arises from the wide-region light adsorption due to the narrow band gap of CdS, effective separation of electrons and holes due to conduction band alignment at the CdS–TiO 2 interface, and favorable reaction sites resulting from the porous structure .
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SOLAR ENERGY MATERIALS AND SOLAR CELLS
·
2024
·
IF 6.3
Jingyuan Guo,Lei Wang,Letu SiQin,Chenjun Yang,Yutian Wang,Yiming Wang,Shuyu Li,Ruijian Liu,Chengjun Zhu,Hongmei Luan
Compared with the traditional structure, the new Cu 2 ZnSn(S, Se) 4 (CZTSSe) solar cell without ZnO window layer has a larger short-circuit current reduction. Due to the poor band matching, serious interface recombination exists at the CZTSSe/CdS heterojunction interface. We have designed a strategy for the preparation of CdS(In) buffer layers by In ion doping to increase the depletion layer width, enhance the carrier concentration in the CdS(In) buffer layer, and improve the energy band alignment problem at the interface of the CZTSSe/CdS heterojunction , which in turn reduces the J SC loss caused by the removal of the ZnO layer. The energy band alignment of the CZTSSe/CdS heterojunction was modulated by finely controlling the doping amount of In ions, which decreased the conduction band offset (CBO) from 0.32 eV to 0.28 eV. Good band alignment is more conducive to carrier separation and transport, and reducing the nonradiative charge recombination at the CZTSSe/CdS heterojunction interface can effectively improve the J SC . Based on the contribution of device electrical parameters to photoelectric conversion efficiency (PCE), the contributions of J SC , open-circuit voltage, and fill factor were calculated to be 107.56%, -6.89%, and -0.67%, respectively, which indicates that the method significantly improves short-circuit currents and reduces the loss of J SC due to the absence of ZnO layer. This study provides a method to achieve high-efficiency CZTSSe solar cells by optimizing the energy band matching of CZTSSe/CdS heterojunctions from 7.07% PCE in conventional cells to 9.01% PCE in novel cells.
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Journal of the American Chemical Society
·
2011
·
IF 9.023
Zheng Li,Yijing Ji,Renguo Xie,Susan Y. Grisham,Xiaogang Peng
Formation of CdS nanocrystals in the classic approach (with octadecene (ODE) as the solvent and elemental sulfur and cadmium carboxylate as the precursors) was found to be kinetically dependent on reduction of elemental sulfur by ODE, which possessed a critical temperature (∼180 °C). After elemental sulfur was activated by ODE, the formation reaction of CdS followed closely. 2-tetradecylthiophene from the activation of S by ODE and fatty acids from the formation reaction of CdS were found to be the only soluble side products. The overall reaction stoichiometry further suggested that oxidation of each ODE molecule generated two molecules of H2S, which in turn reacted with two molecules of cadmium carboxylate molecules to yield two CdS molecular units and four molecules of fatty acids. In comparison to alkanes, octadecene was found to be substantially more active as a reductant for elemental sulfur. To the best of our knowledge, this is the first example of quantitative correlation between chemical reactions and formation of high-quality nanocrystals under synthetic conditions. To demonstrate the importance of such discovery, we designed two independent and simplified synthetic approaches for synthesis of CdS nanocrystals. One approach with its reaction temperature at the critical temperature of S activation (180 °C) used the same reactant composition as the classic approach but without any hot injection. The other approach performed at an ordinary laboratory temperature (≤100 °C) and in a common organic solvent (toluene) was achieved by addition of fatty amine as activation reagent of elemental sulfur.
研究领域:
纳米材料化学
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无机合成
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胶体纳米晶体
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反应机理
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高影响因子
危险品化学品经营许可证（带存储）