Journal of Environmental Chemical Engineering
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2025
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IF 7.2
Xinyue Duan,Yingqing Zhan,Hongshan Jia,Jie Liu,Yajie Lei,Jing Yang,Yuxing Han
MXene nanosheets based membrane materials encounter challenges in the field of oil-water separation, including narrow interlayer spacing, insufficient stability, and limited photocatalytic self-cleaning efficiency. To address the aforementioned issues, the 2D/2D MXene nanosheets based heterojunction was constructed through in situ growth of porous ZnIn 2 S 4 and freely assembled onto a PAN fibrous membrane with via vacuum-assisted self-assembly technology. The resulting MXene/ZnIn 2 S 4 @PAN fibrous composite membrane (FCM) exhibited high flux and exceptional photocatalytic self-cleaning property. On the one hand, the porous petal-like structure and intrinsic hydrophilic nature of MXene/ZnIn 2 S 4 heterojunction offered the remarkable nanochannel modulation capability, enabling the composite membrane to achieve high permeability (5471.13 -6732.57 L m -2 h -1 ) compared with the conventional MXene based composite membranes with compacted lamellar structure. On the other hand, the heterojunction formed between MXene and ZnIn 2 S 4 significantly improved electron conduction efficiency and effectively regulated the energy band structure, as confirmed by electrochemical impedance spectrum and UV–visible near infrared diffuse reflection test. This imparted the composite membrane with exceptional photocatalytic self-cleaning capability for the degradation of organic dyes, with the degradation efficiency reaching as high as 92.15%. Besides, the rational photocatalytic mechanism was proposed on the basis of free radical quenching and EPR experiments. Such high-flux and enhanced self-cleaning PAN FCM showed the potential in dealing with complicated membrane fouling issues and separating emulsified oily wastewater.
研究领域:
材料科学
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环境工程
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化学工程
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2025
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IF 9.7
Zhihan He,Linjia Li,Youyu Pang,Meng Cui,Yanhong Lin,Tengfeng Xie
The photocatalytic synthesis of hydrogen peroxide (H₂O₂) through the two-electron oxygen reduction reaction (ORR) presents a sustainable approach for the production of this industrially crucial compound. However, the photocatalytic efficiency is hindered by inefficient charge separation and sluggish interfacial reaction dynamics. In this study, we have fabricated Ag-modified sulfur vacancy-rich ultrathin ZnIn₂S₄ nanosheets (Ag-Sv-ZIS) as highly effective ORR catalysts, which display a H₂O₂ production rate of 8966 μmol g −1 h −1 under visible light irradiation (≥420 nm). In-situ transient surface photovoltage (TPV) spectra and femtosecond transient absorption (fs-TA) spectra indicate that the incorporation of Ag efficiently promotes the interfacial charge transfer between the photocatalyst and O₂. This research offers novel perspectives on the design of high-performance photocatalysts via the rational engineering of active sites and surface reaction dynamics for efficient photocatalytic H₂O₂ synthesis.
研究领域:
材料科学
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环境科学
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催化
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纳米技术
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化学工程
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PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2025
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IF 6.3
Feng Zhu,Haibin Niu,Xiaoming Li,Shaoqing Zhang,Xiutao Yang,Hongwen Yu,Guopeng Zhu
Hydrogen production via photocatalytic water splitting holds great promise for efficient solar energy conversion. While ZnIn₂S₄ (ZIS) exhibits a suitable band structure for visible-light-driven hydrogen production, its practical application is significantly limited by low charge separation efficiency and poor stability. This work pioneers an acousto-hydrothermal strategy utilizing high-frequency ultrasonic atomization to synthesis structurally optimized ZIS. Systematic characterization reveals that ultrasonic cavitation compresses crystal lattices to enhance Zn 3d-S 3p orbital hybridization, assembles nanosheets with a 20 % increased surface area, leading to enhanced charge separation efficiency. The optimized ZIS demonstrates significantly enhanced photocatalytic activity and stability. It achieves a remarkable hydrogen evolution rate of 51.8 mmol g⁻¹ h⁻¹ under 455 nm visible light irradiation, representing an 86 % improvement over pristine ZIS. After a 15 h reaction, the catalytic system produces 8.3 mmol of H₂ (185.9 mL at standard conditions). This work presents an innovative strategy for designing nanosheet-based materials to achieve high-efficiency photocatalytic hydrogen evolution.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2026
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IF 6.7
Wentong Su,Chunlian Hu,Wei Zhang,Guodong Zhang,Wenke Zhang,Yuantao Chen
Modulating the electronic structure of inorganic semiconductors using biomass is an emerging strategy for developing highly efficient photocatalysts. In this study, Chlorella (Ch) was used as a biological carrier and electron donor, and a bio-inorganic hybrid photocatalyst, Chlorella@ZnIn₂S₄ (ZIS-Ch), featuring bio-induced sulfur vacancy formation, was successfully synthesized via a one-step hydrothermal method. Experimental and characterization results indicate that nitrogen- and oxygen-containing functional groups (–NH 2 , –OH, –COOH) on the Ch surface form interfacial covalent bonds (M–N/O) with Zn 2+ /In 3+ in ZnIn₂S₄, inducing the directed injection of electrons from Ch into the ZnIn 2 S 4 lattice. Concurrently, EPR spectroscopy detected the formation of sulfur vacancies (V S ). Under simulated sunlight and under optimal conditions, the photocatalytic hydrogen production rate of ZIS-Ch40 reached [7.969 mmol⋅g −1 ⋅h −1 ], which is 1.59 times and 5.6 times higher than that of pure ZIS and Ch, respectively, and it maintained good activity even after five cycles. This study provides a new approach for utilizing intact cells to regulate inorganic semiconductor defects and band structures, thereby enabling highly efficient solar hydrogen production.
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INORGANIC CHEMISTRY COMMUNICATIONS
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2026
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IF 5.9
Mengnan Wang,Ruibin Zhang,Guizhen Chen,Rong Tan,Mingjin Zhang
In this study, a novel Z-type heterojunction photocatalyst ZnIn₂S₄/Cu 2 O was successfully constructed for the efficient degradation of tetracycline in aquatic environments. Flower-like ZnIn₂S₄ microspheres and cubic Cu 2 O were prepared via hydrothermal and water bath synthesis methods, respectively, and then composited through a solid-state pyrolysis-assisted ultrasonic dispersion method to form ZIC composites with different mass ratios (ZIC-2, ZIC-4, ZIC-6). Characterization results show that Cu 2 O nanoparticles are uniformly loaded onto the surface of ZnIn₂S₄ microspheres, forming a close heterojunction interface. Under visible light irradiation, ZIC-4 achieved a TC degradation efficiency of 91.2% within 60 min, significantly outperforming pristine ZnIn₂S₄ and Cu 2 O. Photoelectrochemical tests indicate that the Z-type heterojunction effectively promotes the separation and migration of photogenerated electron-hole pairs and suppresses charge carrier recombination. Radical trapping experiments and EPR tests confirm that superoxide radicals (·O₂ − ) and holes (h + ) are the main reactive species. The composite also exhibits good photostability and recyclability, providing a novel and efficient photocatalytic material for visible-light-driven removal of antibiotic pollutants from water.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2026
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IF 9.6
Qing Xi,Huimin Yan,Fangxia Xie,Rui Li,Jianxin Liu,Caimei Fan,Zhixin Jin,Hongwei Wang
A directional photogenerated electron transfer channel from ZnIn 2 S 4 to Mo 2 TiC 2 -Ru was formed in ZnIn 2 S 4 /Mo 2 TiC 2 -Ru. • The interface electronic delocalization effect between Ru nanoclusters and Mo 2 TiC 2 synergistically optimizes the water dissociation and hydrogen evolution sites. • ZnIn 2 S 4 /Mo 2 TiC 2 -Ru exhibits excellent photocatalytic hydrogen evolution activity under both visible light and natural light conditions. The photocatalytic hydrogen evolution (PHE) rate on ZnIn 2 S 4 is severely limited by the low utilization of photogenerated electrons and the sluggish reaction kinetics. Driving the directional transfer of photogenerated electrons to the target site is crucial for enhancing the electron utilization efficiency and the PHE performance. Herein, this study rationally designed a ternary composite photocatalyst ZnIn 2 S 4 /Mo 2 TiC 2 -Ru C , in which Mo 2 TiC 2 -Ru C serves as an electron acceptor and efficient active site. The in-situ KPFM and Mott-Schottky results indicate that the establishment of interfacial electron transport channel accelerates the transfer of photogenerated electrons from ZnIn 2 S 4 to Mo 2 TiC 2 . Density functional theory (DFT) calculations verify the strong metal-support interaction (EMSI) and interfacial electron delocalization of Mo 2 TiC 2 -Ru C , which synergistically optimize the water dissociation at Ru nanocluster and the hydrogen evolution desorption at the Mo 2 TiC 2 terminal, promoting the efficient utilization of photogenerated electrons. Therefore, ZnIn 2 S 4 /Mo 2 TiC 2 -Ru C achieved a PHE rate of 6.15 mmol·g −1 ·h −1 under visible light, and demonstrated excellent potential for PHE application under natural light. This study provides a new paradigm for integrating electron transfer dynamics with active site engineering to improve the utilization efficiency of photogenerated electrons in the photocatalytic hydrogen evolution process. Download: Download high-res image (350KB) Download: Download full-size image
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2025
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IF 9.7
Yue Sun,Yan Xu,Haoxian Wang,Yingjiaqi Yin,Yazi Liu,Jingkai Lin,Shaogui Yang,Yuting Wang,Xinqing Chen,Huan He,Gancheng Zuo
Efficient interfacial charge transfer and robust interface interactions are critical for superior charge carrier separation and advanced heterogeneous photocatalysts. Herein, a Schottky heterojunction has been designed by in situ growth of ZnIn 2 S 4 (ZIS) nanosheets onto Co-doped FeP nanorods (Co X -FePZ), building a dual electron transfer bridge (Fe-S/Zn-P). X-ray photoelectron spectroscopy, X-ray absorption fine structure, and density functional theory calculations prove that trace Co doping alters the chemical bonding structure and Fermi level (E f ) of FeP and ZIS, creating a Schottky heterojunction. The reversed internal electric field and dual electron transfer pathways provide driving force and transmission channels for electron flow. Schottky heterojunction prevents electron reflux and improves carrier separation efficiency, boosting photocatalytic hydrogen evolution. The optimized Co 2.5 -FePZ achieves a remarkable H 2 production rate of 9.9 ± 0.1 mmol·g −1 ·h −1 , approximately 12.4 times that of pure ZIS, with an apparent quantum yield (AQY) of 11 ± 1 % at 365 nm. This work delicately modulated the heterojunction interface and achieved the transition from an Ohmic heterojunction to a Schottky heterojunction, unveiling a novel strategy to optimize carrier migration pathways via trace element doping and covalent coupling.
研究领域:
材料科学
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光催化
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纳米材料
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表面科学
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能源化学
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高影响因子
CHEMICAL PHYSICS LETTERS
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2025
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IF 3.1
Ye Zhang,Xiaobing Yang
Recently, the overuse of tetracycline (TC) has caused persistent adverse effects on both ecological environment and human health. It needs to develop effective methods for removing TC from water. Herein, Ag 2 S/ZnIn 2 S 4 @TiO 2 @carbon was successfully synthesized and used as catalyst for degradation of TC. The influence of Ag 2 S and ZnIn 2 S 4 on the photocatalytic activity of TiO 2 @carbon were investigated. The results show that the Ag 2 S/ZnIn 2 S 4 @TiO 2 @carbon achieved a photocatalytic degradation efficiency of 98.73 %. Moreover, the photocatalytic activity of Ag 2 S/ZnIn 2 S 4 @TiO 2 @carbon remained nearly unchanged after four consecutive cycles, with only a 3.2 % decrease in degradation efficiency. Finally, the degradation mechanism of TC over Ag 2 S/ZnIn 2 S 4 @TiO 2 @carbon was elucidated.
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2025
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IF 8.3
Rui Liu,Yunpei Cui,Na Chai,Lei Yang,Xiufeng Zhang,Qianqian Nie,Hesheng Yu
This study developed an amorphous MoO 2 –C hollow spherical cocatalyst (MOC) derived from Mo-polydopamine, and hybridized it with ZnIn 2 S 4 to form ZnIn 2 S 4 /MoO 2 –C (ZMC) composites. Various characterizations were conducted to analyze the crystal structure, morphology, and photoelectrical properties of the ZMC composites. The prepared ZMC composites were evaluated for photocatalytic hydrogen evolution under simulated sunlight. Furthermore, nanorod-like MoO 2 –C cocatalyst (A-MOC) and ZnIn 2 S 4 /A-MOC (A-ZMC) composites were prepared to investigate the impact of carbon source on catalytic activity. Results show that the addition of MOC cocatalyst significantly enhances the hydrogen evolution rate of ZnIn 2 S 4 from 0.54 to 20.61 mmol g −1 h −1 , and increases the apparent quantum efficiency at 420 nm from 1.66 % to 8.63 %. The hydrogen evolution rate of the optimal ZMC is 1.26 times that of the optimal A-ZMC (16.28 mmol g −1 h −1 ). The crystal structure and morphology of MoO 2 –C determined by carbon source affect the photocatalytic hydrogen evolution performance of ZnIn 2 S 4 . Insight mechanism analysis indicates that the formation of a Schottky junction facilitates the separation of photogenerated electron-hole pairs, thereby enhancing the photocatalytic hydrogen evolution activity. Finally, the ZMC composite catalyst retains 89 % of its original hydrogen evolution performance after 5 cycles over 15 h, demonstrating good stability and promising prospects for real-world applications.
研究领域:
材料科学
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催化
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纳米技术
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能量转换
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环境科学
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2026
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IF 9.1
Yuanyuan Wang,Yin Zhang,Yuxin Zhang,Xinchen Li,Yancheng Gong,Yingfei Hu,Hangmin Guan
This research details the synthesis of an Ag/Ag₂S/ZnIn₂S₄ composite photocatalyst via the in-situ reduction of Ag/Ag₂S onto a flower-like ZnIn₂S₄ structure. The optimized 2%Ag/Ag₂S/ZnIn₂S₄ material displays augmented visible-light absorption spanning 500–800 nm, a photocurrent density 3.9-fold higher than pristine ZnIn₂S₄, and a more negative flat-band potential of −1.04 V versus Ag/AgCl. This composite achieves over 99% degradation of 2,2′,4,4′-tetrabromodiphenyl ether (BDE-47) within 15 min (k = 0.2629 min −1 ) and 98.9% degradation of hexachlorobenzene (HCB) within 100 min (k = 0.0408 min −1 ), representing a degradation rate approximately 40 times faster than pure ZnIn₂S₄. To our knowledge, this is the fastest reported case to date of a visible-light-driven reductive dehalogenation reaction involving BDE-47 under similarly mild conditions, and its performance significantly outperforms that of ZnIn₂S₄ modified with Pd, Au, or Cu. Photogenerated electron-mediated mechanisms are confirmed through trapping experiments, and the catalyst exhibits robust stability across five reaction cycles. The accelerated degradation of BDE-47 is ascribed to its lower C Br bond energy (285 kJ/mol) compared to C Cl (327 kJ/mol) and enhanced hydrophobic adsorption. This study introduces a triple-synergy heterojunction approach for achieving ultrafast visible-light-driven reductive dehalogenation of halogenated persistent organic pollutants.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2025
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IF 9.7
Chen Chen,Jianhao Qiu,Guanglu Xia,Lu Zhang,Yixin Li,Biyao Fang,Meng Liu,Jianfeng Yao
Utilizing metal–organic frameworks as templates to synthesize photocatalysts has garnered increasing attention thanks to their substantial advantages. In this study, Cu-doped ZnIn 2 S 4 with hollow tubular structures was ingeniously synthesized using MIL-68-NH 2 as a template for photocatalytic H 2 O 2 production in ambient air and pure water under visible light. The hollow tubular structures promote light penetration and reflection, furnish substantial accessible reactive sites and accelerate the diffusion of reactants and products. Cu doping notably varies the band configuration of ZnIn 2 S 4 , resulting in a narrower bandgap and a lower conduction band potential. Their cooperative effects enable a respectable H 2 O 2 production from oxygen reduction reactions. The hollow tubular ZnIn 2 S 4 and corresponding Cu-doped counterpart achieved high H 2 O 2 yields of 1153 and 1616 μmol·L −1 , respectively, 3.6 and 5.1 times-increase compared with that of ordinary ZnIn 2 S 4 prepared without MIL-68-NH 2 . This work would provide a new perspective on ZnIn 2 S 4 -based photocatalysts and provoke the study on the green synthesis of H 2 O 2 .
研究领域:
光催化
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纳米材料
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环境化学
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材料科学
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绿色化学
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高影响因子
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