INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2020
·
IF 4.939
Fangxu Dai,Ying Wang,Ruiyang Zhao,Xinran Zhou,Jishu Han,Lei Wang
Novel ZnIn 2 S 4 /CaTiO 3 nanocubes were prepared by a two-step method and used as a visible light photocatalyst for efficient hydrogen production . The control of the content of CaTiO 3 could effectively change the photocatalytic H 2 production activity of ZnIn 2 S 4 /CaTiO 3 nanocubes, and the maximum H 2 evolution amount reached to 133116.43 μmol g −1 in 6 h. The photocatalytic hydrogen production efficiency of ZnIn 2 S 4 /CaTiO 3 nanocubes was almost 4.5 times higher than that of pure ZnIn 2 S 4 . The electrochemical impedance spectrum of ZnIn 2 S 4 /CaTiO 3 exhibited the smallest arc radius, time-resolved PL spectrum showed that the carrier lifetime of ZnIn 2 S 4 /CaTiO 3 nanocubes was 3.29 ns, and the photocurrent density of ZnIn 2 S 4 /CaTiO 3 reached to 0.81 μA cm −2 . The prepared ZnIn 2 S 4 /CaTiO 3 nanocubes increased visible light absorption, improved the separation and transfer of photo-generated electrons and holes, and inhibited the recombination of photo-generated electron-hole pairs. ZnIn 2 S 4 /CaTiO 3 nanocubes exhibited the enhanced photocatalytic activity and high stability, and could be used as promising photocatalyst for hydrogen production application.
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Catalysts
·
2026
·Vol. 16
·期 2
·188
·
IF 4.5
Lian Yi,Qiulin Chen,Wen Zhang,Rongshu Zhu
The construction of Z-scheme heterojunctions is regarded as one of the most effective modification strategies for photocatalysts. However, how to improve the interfacial charge transfer efficiency to further enhance the photocatalytic activity remains an urgent issue to be addressed. In this study, sulfur vacancy-enriched ZnIn2S4/MoS2Z-scheme heterojunctions (V-ZIS/MS) containing interfacial Mo-S bonds was successfully synthesized using a hydrothermal method. The V-ZIS/2%MS showed the highest hydrogen evolution rate, achieving 19.21 ± 0.78 mmol·g−1·h−1under visible light and 112.89 ± 10.98 mmol·g−1·h−1under full-spectrum illumination, which are 5.07 and 4.41 times higher than ZIS (3.79 ± 0.79 mmol·g−1·h−1) and V-ZIS (4.36 ± 0.98 mmol·g−1·h−1) under visible light, respectively, outperforming most reported ZIS-based photocatalysts. This is because the composite of V-ZIS and MS enhanced its light absorption performance. More importantly, the formation of Mo-S bonds at the V-ZIS/MoS2interface facilitated efficient charge transfer and reduced interfacial resistance, leading to significantly improved photocatalytic activity. Cycling experiments further demonstrate that V-ZIS/2%MS exhibits considerable photocatalytic stability. X-ray diffraction analysis before and after the reaction further confirmed the structural stability of the catalyst. This work provides a certain reference for the preparation of high-performance ZIS-based photocatalysts.
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JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
·
2026
·
IF 4.4
Feng Zhu,Guopeng Zhu,Shaoqing Zhang,Haibin Niu,Xiutao Yang,Xiaoming Li,Hongwen Yu
Constructed an E. coli -ZnIn 2 S 4 biohybrid for photocatalytic H 2 production. • Achieved a high H 2 yield of 335 μmol under optimized conditions. • Demonstrated a synergistic effect surpassing individual component performance. • Revealed improved charge separation at the bio-abiotic interface. • Identified light-induced redirection of microbial metabolic flux. Semiconductor-microorganism hybrid systems exhibit considerable potential for light-driven hydrogen production via water splitting. However, their performance is limited by the efficiency of electron transfer at the bio-abiotic interface and the stability of the hybrid system. In this study, we constructed a novel light-driven hybrid hydrogen production system utilizing Escherichia coli ( E. coli ) and ZnIn 2 S 4 (ZIS). E. coli interacts with ZIS surface through specific interfacial interactions facilitated by electrostatic adsorption and forms robust connections via metal-nonmetal chemical bonds. The E. coli -ZIS hybrid demonstrated a significantly enhanced hydrogen evolution activity compared to pure ZIS or E. coli systems alone, achieving a hydrogen yield of 335 μmol within 3 h. Metabolic analysis revealed that ZIS can comprehensively regulate the microbial metabolic network to accelerate substrate decomposition and drive the reaction toward hydrogen production. By leveraging the light-enhanced synergistic mechanism of E. coli metabolic hydrogen production, the E. coli -ZIS composite system achieves efficient and stable photocatalytic hydrogen production.
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FUEL
·
2026
·
IF 7.8
Ligang Ma,Xinlan Li,Tingting Chen,Jingxuan Zhou,Jiulei Zhao,Yichi Zhang,Huilin Jiang,Xiaoqian Ai
Photocatalytic hydrogen production provides a sustainable approach for converting solar energy into clean, high-energy–density hydrogen fuel, addressing both energy shortages and environmental concerns. In this study, three-dimensional ZnIn 2 S 4 nanoarchitectures were grown in situ on TiO 2 nanobelts via a simple oil-bath method, forming core–shell ZnIn 2 S 4 @TiO 2 (ZIS@TO) heterojunctions, with TiO 2 nanobelts as the core and ZnIn 2 S 4 nanoflowers as the shell. The integrated heterojunction combines the structural advantages of both one-dimensional and two-dimensional components. The interface characteristics, band alignment, and charge carrier dynamics of the ZIS@TO were systematically investigated. The results show that the ZIS@TO heterojunction improves the dispersion of ZnIn 2 S 4 and TiO 2 , promoting more efficient interaction between photogenerated electrons and water. Furthermore, the heterojunction facilitates effective charge separation via an S-scheme transfer mechanism, leading to a significantly enhancement in photocatalytic hydrogen evolution activity.
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JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
·
2022
·
IF 10.319
Meng Dai,Zuoli He,Peng Zhang,Xin Li,Shuguang Wang
The recombination of photogenerated electrons and holes is a crucial factor limiting photocatalytic H 2 evolution. The S-scheme ZnWO 4 -ZnIn 2 S 4 heterojunction with 2D coupling interfaces was successfully synthesized using a simple solvothermal method. An effective S-scheme interfacial charge migration route at the S-scheme heterogeneous interface was determined by energy band structure analyses (such as UPS, Mott-Schottky and XPS plots), which facilitates the separation of photoexcited carriers. It is worth noting that the optimal ZnWO 4 -ZnIn 2 S 4 composite has an H 2 evolution activity of 4925.3 μmol g −1 h −1 with favourable photostability and stability. Meanwhile, the ZnWO 4 -ZnIn 2 S 4 heterojunction exhibits the maximum optical response value (2.8 mA cm −2 ) in the initial stage, effectively promoting the separation and migration of photogenerated carriers. The establishment of the built-in electric field direction at the interface can effectively promote the space charge separation between the ZnWO 4 and ZnIn 2 S 4 nanosheets, which is favorable to the photocatalytic H 2 evolution. This work provides valuable guidance for designing S-scheme heterojunction photocatalysts composed of two n-type semiconductors for energy and environmental applications.
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Catalysts
·
2022
·Vol. 12
·期 4
·400
·
IF 4.501
Sujuan Hu,Li Jin,Wangyu Si,Baoling Wang,Mingshan Zhu
Vacancies engineering based on semiconductors is an effective method to enhance photoelectrochemical activity. Herein, we used a facile one-step solvothermal method to prepare sulfur vacancies modified ultrathin two-dimensional (2D) ZnIn2S4nanosheets. The photon-to-current efficiency of sulfur vacancies modified ultrathin 2D ZnIn2S4nanosheets is 1.82-fold than ZnIn2S4nanosheets without sulfur vacancies and 2.04-fold than multilayer ZnIn2S4. The better performances can be attributed to the introduced sulfur vacancies in ZnIn2S4, which influence the electronic structure of ZnIn2S4to absorb more visible light and act as the electrons trapping sites to suppress the recombination of photo-generated carriers. These results provide a new route to designing efficient photocatalyst by introducing sulfur vacancies.Keywords:ZnIn2S4nanosheets;sulfur vacancies;vacancies engineering;photoelectrocatalysts;photoelectrochemical performance
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Minfeng Zheng,Xiaowei Xing,Yeke Zhang,Zenan Li,Ting Yang,Yuqing Liu,Zhenhui Kang
Recent progress in the co-spinning of nanofibers and semiconductor particles offers a promising strategy for the development of photocatalytic devices, solving aggregation and catalyst recovery challenges. However, composite photocatalysts based on nanofiber membranes often suffer from poor conductivity, low hydrophilicity, and easy recombination of photogenerated electron-hole pairs in the semiconductor components. Here, to tackle the aforementioned issues of ZnIn 2 S 4 /polyacrylonitrile (ZIS/PAN) nanofiber-based catalysts, we prepared a composite carbon dots/ZnIn 2 S 4 /polyacrylonitrile (CZP) nanofiber membrane by blending carbon dots (CDs) with ZIS/PAN using the electrospinning process. The hydrogen evolution performance of the CZP photocatalyst was significantly improved by CDs, which enhanced the hydrophilicity, increased the light absorption, facilitated the transfer of photogenerated electrons, and reduced the recombination of photogenerated electron-hole pairs. Notably, the optimal CZP photocatalyst achieved a hydrogen evolution rate of 2250 μmol g -1 h −1 , which is about 23 % higher than that of the nanofiber membrane without CDs and 4.55 times higher than that of ZIS particles. The present work successfully improved the CZP nanofiber membrane of photocatalytic hydrogen evolution performance, and the membrane may benefit further device development by eliminating the need for stirring and simplifying the recovery process.
研究领域:
材料科学
·
能源化学
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2020
·
IF 7.489
Jie Zhou,Jing Ding,Hui Wan,Guofeng Guan
Phosphorus-doped g-C 3 N 4 /ZnIn 2 S 4 (PCN/ZIS) heterojunction photocatalysts were constructed by solvothermal method . The physical and chemical properties were investigated with X-ray diffraction (XRD), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), UV–vis diffuse reflectance spectroscopy (DRS), etc. The degradation of antibiotic wastewater was used to investigate the photocatalytic activities of composites under visible-light irradiation. The 10% PCN/ZIS had the best photocatalytic degradation performance for tetracycline with a photodegradation rate of 0.0874 min −1 , which is respectively about 2.9 and 52.0 times than that of pure ZIS and PCN. Meanwhile, it was concluded that the holes and ⋅O 2 – (superoxide radicals) play dominant roles in the photocatalytic reactions through radicals trapping experiments, while ⋅OH (hydroxyl radicals) has a negative effect. In addition, 10%PCN/ZIS, with excellent stability and recyclability, also exhibited high photocatalytic activity for terramycin, chlortetracycline and ofloxacin . Overall, with the enhanced photocatalytic performance, PCN/ZIS could be potentially applied for photocatalytic degradation of antibiotic wastewater.
研究领域:
环境科学
·
材料科学
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CHEMICAL RESEARCH IN CHINESE UNIVERSITIES
·
2025
·
IF 3
Yan Shaohan,Wang Lijing,Shan Pengnian,Lin Xue,Shi Weilong
Against the backdrop of increasing energy shortages, hydrogen energy has garnered significant attention as a green and clean alternative energy source. To fully exploit a broader portion of the solar spectrum, we designed a Y 2 O 3 :Yb 3+ , Er 3+ /ZnIn 2 S 4 (denoted as YYE/ZIS) composite photocatalyst with a well-defined loaded structure of coating Y 2 O 3 :Yb 3+ , Er 3+ nanoparticles on the ZnIn2S4 micro-flowers, capable of efficiently utilizing near-infrared (NIR) light through an up-conversion mechanism. The introduction of Yb 3+ and Er 3+ ions endows the Y 2 O 3 with excellent up-conversion luminescence properties, enabling the effective conversion of lowenergy NIR photons into high-energy visible light over YYE/ZIS composite, which subsequently activates the ZIS component for NIR-driven photocatalytic hydrogen production. Photoelectrochemical characterizations reveal that the loaded structure significantly facilitates efficient charge separation and migration at the interface, while markedly suppressing the recombination of photogenerated electron-hole pairs, thereby enhancing the overall photocatalytic performance. Remarkably, the catalyst demonstrates excellent NIR-response hydrogen evolution performance (16.3 μmol·g -1 ·h -1 ) even in the absence of noble metal co-catalysts, such as Pt, achieving a hydrogen production rate approximately 10.9 times higher than that of pristine ZIS. This work proposes a novel approach for constructing up-conversion-enabled composite photocatalysts with rationally engineered interfacial architectures.
研究领域:
材料科学
·
能源化学
·
纳米技术
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ACS Catalysis
·
2016
·
IF 9.307
Nengchao Luo,Min Wang,Hongji Li,Jian Zhang,Huifang Liu,Feng Wang
One of the challenges of depolymerizing lignin to valuable aromatics lies in the selective cleavage of the abundant C–O bonds of β-O-4 linkages. Herein we report a photocatalytic oxidation–hydrogenolysis tandem method for cleaving C–O bonds of β-O-4 alcohols. The Pd/ZnIn2S4 catalyst is used in the aerobic oxidation of α-C–OH of β-O-4 alcohols to α-C═O with 455 nm light, and then a TiO2–NaOAc system is employed for cleaving C–O bonds neighboring the α-C═O bonds through a hydrogenolysis reaction by switching to 365 nm light. Interestingly, the oxidation–hydrogenolysis tandem reaction can be conducted in one pot to offer ketones and phenols (up to 90% selectivity) via a dual light wavelength switching (DLWS) strategy. EPR and metal loading experiments elucidate that Ti3+ in TiO2 is formed in situ and is responsible for the photocatalytic hydrogenolysis through electron transfer from Ti3+ to the β-O-4 ketones.
研究领域:
化学工程
·
材料科学
·
环境科学
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Progress in Natural Science-Materials International
·
2025
·
IF 7.1
Jiangfeng Xu,Run Zhou,Yangzi Li,Yu Tu
A sustainable pathway to green hydrogen generation, the design and synthesis of targeted photocatalysts based on semiconductors or other organic/inorganic materials has emerged as a promising approach for efficient hydrogen production under light irradiation. In this paper, wollastonite-ZnIn 2 S 4 composite photocatalysts (ZIS-W) were successfully prepared by the chemical deposition method with wollastonite as the carrier. The hydrogen evolution reaction from water under simulated sunlight irradiation and the enhancement mechanism of ZIS-W were investigated. The results showed that ZIS-W exhibits favorable photocatalytic hydrogen evolution performance and stability, and the photocatalytic hydrogen evolution efficiency of ZIS-W was 4.94 mmol h −1 g −1 , which was 1.44 times higher than that of pure ZnIn 2 S 4 . The unique crystal structure of wollastonite provides favorable conditions for the growth of ZnIn 2 S 4 and effectively enhances the dispersion and stability of ZnIn 2 S 4 . The recombination of photogenerated electron-hole pairs was effectively suppressed while the specific surface area was increased. This study provided a facile synthesis method for preparing photocatalysts with highly efficient hydrogen generation.
研究领域:
材料科学
·
能源科学
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LANGMUIR
·
2026
·Vol. 42
·期 29
·21226-21235
·
IF 4.4
Li Yuanyuan,Jiang Wen,Wan Caiwen,Shi Jiarong,Zhang Hanyun,Zhang Di,Yang Dingfeng
The heterogeneous semiconductor photocatalytic synthesis
of organic
molecules holds significant potential in green catalysis. In this
work, we report the introduction of phosphorus (P) into ZnIn 2 S 4 to achieve photocatalytic trifluoromethylation of styrene.
Although P-doping does not enhance the yield of trifluoromethylacetophenone
(28–30%, comparable to pristine ZnIn 2 S 4 ), it significantly improves the photostability of the catalyst.
Meanwhile, P-doping reduces the oxidation potential and enhances the
separation efficiency of photogenerated charge carriers, radical trapping
experiments and electron paramagnetic resonance confirmed the involvement
of trifluoromethyl radical ( • CF 3 ), along
with reactive oxygen species (ROS: • O 2 – and 1 O 2 ). Mechanistic investigations
revealed that photogenerated holes oxidize CF 3 SO 2 Na to generate • CF 3 , which, together
with ROS derived from electron reduction, promote the addition to
styrene to form trifluoromethylacetophenone. This study provides a
foundation for heterogeneous photocatalytic trifluoromethylation of
unsaturated hydrocarbons in arenes.
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