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Chong WK, Ng BJ, Tan LL, Chai SP. A compendium of all-in-one solar-driven water splitting using ZnIn 2S 4-based photocatalysts: guiding the path from the past to the limitless future. Chem Soc Rev 2024. [PMID: 39222069 DOI: 10.1039/d3cs01040f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/04/2024]
Abstract
Photocatalytic water splitting represents a leading approach to harness the abundant solar energy, producing hydrogen as a clean and sustainable energy carrier. Zinc indium sulfide (ZIS) emerges as one of the most captivating candidates attributed to its unique physicochemical and photophysical properties, attracting much interest and holding significant promise in this domain. To develop a highly efficient ZIS-based photocatalytic system for green energy production, it is paramount to comprehensively understand the strengths and limitations of ZIS, particularly within the framework of solar-driven water splitting. This review elucidates the three sequential steps that govern the overall efficiency of ZIS with a sharp focus on the mechanisms and inherent drawbacks associated with each phase, including commonly overlooked aspects such as the jeopardising photocorrosion issue, the neglected oxidative counter surface reaction kinetics in overall water splitting, the sluggish photocarrier dynamics and the undesired side redox reactions. Multifarious material design strategies are discussed to specifically mitigate the formidable limitations and bottleneck issues. This review concludes with the current state of ZIS-based photocatalytic water splitting systems, followed by personal perspectives aimed at elevating the field to practical consideration for future endeavours towards sustainable hydrogen production through solar-driven water splitting.
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Affiliation(s)
- Wei-Kean Chong
- Multidisciplinary Platform of Advanced Engineering, Department of Chemical Engineering, School of Engineering, Monash University Malaysia, Jalan Lagoon Selatan, Bandar Sunway, Selangor, 47500, Malaysia.
| | - Boon-Junn Ng
- School of Energy and Chemical Engineering, Xiamen University Malaysia, Jalan Sunsuria, Bandar Sunsuria, Sepang, Selangor, 43900, Malaysia
| | - Lling-Lling Tan
- Multidisciplinary Platform of Advanced Engineering, Department of Chemical Engineering, School of Engineering, Monash University Malaysia, Jalan Lagoon Selatan, Bandar Sunway, Selangor, 47500, Malaysia.
| | - Siang-Piao Chai
- Multidisciplinary Platform of Advanced Engineering, Department of Chemical Engineering, School of Engineering, Monash University Malaysia, Jalan Lagoon Selatan, Bandar Sunway, Selangor, 47500, Malaysia.
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Liang Z, Bai B, Wang X, Gao Y, Li Y, Bu Q, Ding F, Sun Y, Xu Z. Dodecahedral hollow multi-shelled Co 3O 4/Ag:ZnIn 2S 4 photocatalyst for enhancing solar energy utilization efficiency. RSC Adv 2024; 14:6205-6215. [PMID: 38375002 PMCID: PMC10875279 DOI: 10.1039/d3ra08425f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2023] [Accepted: 02/10/2024] [Indexed: 02/21/2024] Open
Abstract
Employing semiconductor photocatalysts featuring a hollow multi-shelled (HoMs) structure to establish a heterojunction is an effective approach to addressing the issues of low light energy utilization and severe recombination of photogenerated charge carriers. To take advantage of these key factors in semiconductor photocatalysis, here, a dodecahedral HoMs Co3O4/Ag:ZnIn2S4 photocatalyst (denoted as Co3O4/AZIS) was firstly synthesized by coupling Ag+-doped ZnIn2S4 (AZIS) nanosheets with dodecahedral HoMs Co3O4. The unique HoMs structure of the photocatalyst can not only effectively promote the separation and transfer of photo-induced charge, but also improve the utilization rate of visible light, exposing rich active sites for the photocatalytic redox reaction. The photocatalytic experiment results showed that the Co3O4/90.0 wt% AZIS photocatalyst has a high hydrogen (H2) production rate (695.0 μmol h-1 g-1) and high methyl orange (MO) degradation rate (0.4243 min-1). This work provides a feasible strategy for the development of HoMs heterojunction photocatalysts with enhanced H2 production and degradation properties of organic dyes.
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Affiliation(s)
- Zhiman Liang
- College of Environmental and Chemical Engineering, Dalian University Dalian 116622 China
| | - Bobo Bai
- College of Environmental and Chemical Engineering, Dalian University Dalian 116622 China
| | - Xiufang Wang
- College of Environmental and Chemical Engineering, Dalian University Dalian 116622 China
| | - Yu Gao
- College of Environmental and Chemical Engineering, Dalian University Dalian 116622 China
| | - Yi Li
- College of Environmental and Chemical Engineering, Dalian University Dalian 116622 China
| | - Qiuhui Bu
- College of Environmental and Chemical Engineering, Dalian University Dalian 116622 China
| | - Fu Ding
- Key Laboratory of Inorganic Molecule-Based Chemistry of Liaoning Province, Shenyang University of Chemical Technology Shenyang 110142 China
| | - Yaguang Sun
- Key Laboratory of Inorganic Molecule-Based Chemistry of Liaoning Province, Shenyang University of Chemical Technology Shenyang 110142 China
| | - Zhenhe Xu
- College of Environmental and Chemical Engineering, Dalian University Dalian 116622 China
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Gu D, Wang Y, Liang Z, Dou Y, Xu Z, Zheng J, Sun Y, Ding F, Gao Y. The construction of a heterostructured RGO/g-C 3N 4/LaCO 3OH composite with enhanced visible light photocatalytic activity for MO degradation. RSC Adv 2023; 13:15302-15310. [PMID: 37213336 PMCID: PMC10196886 DOI: 10.1039/d3ra02415f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Accepted: 05/12/2023] [Indexed: 05/23/2023] Open
Abstract
The construction of a heterojunction and the introduction of a cocatalyst can both promote the transfer of photogenerated electrons, which are effective strategies to enhance photocatalytic efficiency. In this paper, a ternary RGO/g-C3N4/LaCO3OH composite was synthesized by constructing a g-C3N4/LaCO3OH heterojunction and introducing a non-noble metal cocatalyst RGO through hydrothermal reactions. TEM, XRD, XPS, UV-vis diffuse reflectance spectroscopy, photo-electrochemistry and PL tests were carried out to characterize the structures, morphologies and carrier separation efficiencies of products. Benefiting from the boosted visible light absorption capability, reduced charge transfer resistance and facilitated photogenerated carrier separation, the visible light photocatalytic activity of the ternary RGO/g-C3N4/LaCO3OH composite was effectively improved, resulting in a much increased MO (methyl orange) degradation rate of 0.0326 min-1 compared with LaCO3OH (0.0003 min-1) and g-C3N4 (0.0083 min-1). Moreover, by combining the results of the active species trapping experiment with the bandgap structure of each component, the mechanism of the MO photodegradation process was proposed.
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Affiliation(s)
- Deng Gu
- College of Environmental and Chemical Engineering, Dalian University Dalian 116622 China
- Key Laboratory of Inorganic Molecule-Based Chemistry of Liaoning Province, Shenyang University of Chemical Technology Shenyang 110142 China
| | - Yuanjin Wang
- College of Environmental and Chemical Engineering, Dalian University Dalian 116622 China
| | - Zhiman Liang
- College of Environmental and Chemical Engineering, Dalian University Dalian 116622 China
| | - Yanting Dou
- College of Environmental and Chemical Engineering, Dalian University Dalian 116622 China
| | - Zhenhe Xu
- College of Environmental and Chemical Engineering, Dalian University Dalian 116622 China
| | - Jiqi Zheng
- College of Environmental and Chemical Engineering, Dalian University Dalian 116622 China
| | - Yaguang Sun
- Key Laboratory of Inorganic Molecule-Based Chemistry of Liaoning Province, Shenyang University of Chemical Technology Shenyang 110142 China
| | - Fu Ding
- Key Laboratory of Inorganic Molecule-Based Chemistry of Liaoning Province, Shenyang University of Chemical Technology Shenyang 110142 China
| | - Yu Gao
- College of Environmental and Chemical Engineering, Dalian University Dalian 116622 China
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Sun Y, Kumar V, Kim KH. The assessment of graphitic carbon nitride (g-C3N4) materials for hydrogen evolution reaction: Effect of metallic and non-metallic modifications. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2022.122413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Li J, Chen Y, Zhu L, Liao L, Wang X, Xu X, Qiu L, Xi J, Li P, Duo S. In situ fabrication of a novel CdS/ZnIn 2S 4/g-C 3N 4 ternary heterojunction with enhanced visible-light photocatalytic performance. RSC Adv 2022; 12:32480-32487. [PMID: 36425734 PMCID: PMC9651134 DOI: 10.1039/d2ra06328j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2022] [Accepted: 11/08/2022] [Indexed: 11/13/2022] Open
Abstract
In this study, a novel g-C3N4-based ternary heterojunction was rationally designed and constructed by the in situ growth of ZnIn2S4 nanosheets and CdS nanoparticles onto the g-C3N4 nanosheets using a facile two-step oil-bath method. Through optimizing the proportion of ZnIn2S4 and CdS component, g-C3N4 nanosheets coupled with ZnIn2S4 nanosheets and CdS nanoparticles (denoted as CdS/ZnIn2S4/g-C3N4) exhibited obviously higher photocatalytic properties for RhB removal than the single-component and dual-component systems. Among the as-obtained ternary photocatalysts, it was found that the ternary CdS/ZnIn2S4/g-C3N4-0.2 photocatalyst displayed the optimum photocatalytic property (96%) within a short time (30 min), which was almost 27.42 and 1.17 times higher than that of pure g-C3N4 and binary ZnIn2S4/g-C3N4-0.7 composite. The excellent activity of the ternary CdS/ZnIn2S4/g-C3N4 heterostructure is assigned to the synergetic effects of CdS nanoparticles, ZnIn2S4 nanosheets and g-C3N4 nanosheets, which not only broaden the visible-light absorption range, but also improve the charge mobility and separation rate, thus boosting the visible-light-driven photocatalytic property of g-C3N4.
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Affiliation(s)
- Jingzhe Li
- Jiangxi Key Laboratory of Surface Engineering, School of Materials and Mechanical & Electrical Engineering, Jiangxi Science and Technology Normal University Nanchang Jiangxi 330013 P. R. China
| | - Yue Chen
- Jiangxi Key Laboratory of Surface Engineering, School of Materials and Mechanical & Electrical Engineering, Jiangxi Science and Technology Normal University Nanchang Jiangxi 330013 P. R. China
| | - Liezhen Zhu
- Jiangxi Key Laboratory of Surface Engineering, School of Materials and Mechanical & Electrical Engineering, Jiangxi Science and Technology Normal University Nanchang Jiangxi 330013 P. R. China
| | - Linfa Liao
- Jiangxi Key Laboratory of Surface Engineering, School of Materials and Mechanical & Electrical Engineering, Jiangxi Science and Technology Normal University Nanchang Jiangxi 330013 P. R. China
| | - Xinmao Wang
- Jiangxi Key Laboratory of Surface Engineering, School of Materials and Mechanical & Electrical Engineering, Jiangxi Science and Technology Normal University Nanchang Jiangxi 330013 P. R. China
| | - Xun Xu
- Jiangxi Key Laboratory of Surface Engineering, School of Materials and Mechanical & Electrical Engineering, Jiangxi Science and Technology Normal University Nanchang Jiangxi 330013 P. R. China
| | - Lingfang Qiu
- Jiangxi Key Laboratory of Surface Engineering, School of Materials and Mechanical & Electrical Engineering, Jiangxi Science and Technology Normal University Nanchang Jiangxi 330013 P. R. China
| | - Jiangbo Xi
- Key Laboratory of Novel Biomass-Based Environmental and Energy Materials in Petroleum and Chemical Industry, Key Laboratory of Green Chemical Engineering Process of Ministry of Education, Engineering Research Center of Phosphorus Resources Development and Utilization of Ministry of Education, Hubei Key Laboratory of Novel Reactor and Green Chemical Technology, School of Chemistry and Environmental Engineering, Wuhan Institute of Technology Wuhan 430073 P. R. China
| | - Ping Li
- Jiangxi Key Laboratory of Surface Engineering, School of Materials and Mechanical & Electrical Engineering, Jiangxi Science and Technology Normal University Nanchang Jiangxi 330013 P. R. China
| | - Shuwang Duo
- Jiangxi Key Laboratory of Surface Engineering, School of Materials and Mechanical & Electrical Engineering, Jiangxi Science and Technology Normal University Nanchang Jiangxi 330013 P. R. China
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Ultrasensitive photoelectrochemical aptasensor for detecting telomerase activity based on Ag 2S/Ag decorated ZnIn 2S 4/C 3N 4 3D/2D Z-scheme heterostructures and amplified by Au/Cu 2+-boron-nitride nanozyme. Biosens Bioelectron 2022; 203:114048. [PMID: 35121445 DOI: 10.1016/j.bios.2022.114048] [Citation(s) in RCA: 40] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Accepted: 01/25/2022] [Indexed: 02/07/2023]
Abstract
Enzyme-mediated signal amplification strategies have gained substantial attention in photoelectrochemical (PEC) biosensing, while natural enzyme on the photoelectrode inevitably obstructs the interfacial electron transfer, in turn deteriorating the photocurrent responses. Herein, Au nanoparticles and Cu2+-modified boron nitride nanosheets (AuNPs/Cu2+-BNNS) behaved as nanozyme to achieve remarkable magnification in the PEC signals from a novel signal-off aptasensor for ultra-sensitive assay of telomerase (TE) activity based on Ag2S/Ag nanoparticles decorated ZnIn2S4/C3N4 Z-scheme heterostructures (termed as Ag2S/Ag/ZnIn2S4/C3N4, synthesized by hydrothermal treatment). Specifically, telomerase primer sequences (TS) were extended by TE in the presence of deoxyribonucleoside triphosphates (dNTPs), which was directly bond with the thiol modified complementary DNA (cDNA), achieving efficient linkage with the nanozyme via Au-S bond. The immobilized nanoenzyme catalyzed the oxidation between 4-chloro-1-naphthol (4-CN) and H2O2 to generate insoluble precipitation on the photo-electrode. By virtue of the inhibited PEC signals with the TE-enabled TS extension, an aptasensor for assay of TE activity was developed, showing the wide linear range of 50-5×105 cell mL-1 and a low detection limit of 19 cell mL-1. This work provides some valuable guidelines for developing advanced nanozyme-based PEC bioanalysis of diverse cancer cells.
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Yu H, Zhu J, Qiao R, Zhao N, Zhao M, Kong L. Facile Preparation and Controllable Absorption of a Composite Based on PMo
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/Ag Nanoparticles: Photodegradation Activity and Mechanism”. ChemistrySelect 2022. [DOI: 10.1002/slct.202103668] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Haihui Yu
- School of Chemical Engineering Northeast Electric Power University Jilin 132012 P. R. China
| | - Jiayu Zhu
- School of Chemical Engineering Northeast Electric Power University Jilin 132012 P. R. China
| | - Run Qiao
- School of Chemical Engineering Northeast Electric Power University Jilin 132012 P. R. China
| | - Nan Zhao
- School of Chemical Engineering Northeast Electric Power University Jilin 132012 P. R. China
| | - Mingyu Zhao
- School of Chemical Engineering Northeast Electric Power University Jilin 132012 P. R. China
| | - Li Kong
- College of Petrochemical Technology Jilin Institute of Chemical Technology Jilin 132012 China
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Wang L, Yang T, Peng L, Zhang Q, She X, Tang H, Liu Q. Dual transfer channels of photo-carriers in 2D/2D/2D sandwich-like ZnIn2S4/g-C3N4/Ti3C2 MXene S-scheme/Schottky heterojunction for boosting photocatalytic H2 evolution. CHINESE JOURNAL OF CATALYSIS 2022. [DOI: 10.1016/s1872-2067(22)64133-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Yang R, Mei L, Fan Y, Zhang Q, Zhu R, Amal R, Yin Z, Zeng Z. ZnIn 2 S 4 -Based Photocatalysts for Energy and Environmental Applications. SMALL METHODS 2021; 5:e2100887. [PMID: 34927932 DOI: 10.1002/smtd.202100887] [Citation(s) in RCA: 59] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Indexed: 06/14/2023]
Abstract
As a fascinating visible-light-responsive photocatalyst, zinc indium sulfide (ZnIn2 S4 ) has attracted extensive interdisciplinary interest and is expected to become a new research hotspot in the near future, due to its nontoxicity, suitable band gap, high physicochemical stability and durability, ease of synthesis, and appealing catalytic activity. This review provides an overview on the recent advances in ZnIn2 S4 -based photocatalysts. First, the crystal structures and band structures of ZnIn2 S4 are briefly introduced. Then, various modulation strategies of ZnIn2 S4 are outlined for better photocatalytic performance, which includes morphology and structure engineering, vacancy engineering, doping engineering, hydrogenation engineering, and the construction of ZnIn2 S4 -based composites. Thereafter, the potential applications in the energy and environmental area of ZnIn2 S4 -based photocatalysts are summarized. Finally, some personal perspectives about the promises and prospects of this emerging material are provided.
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Affiliation(s)
- Ruijie Yang
- Department of Materials Science and Engineering, City University of Hong Kong, Kowloon, Hong Kong, 999077, P. R. China
| | - Liang Mei
- Department of Materials Science and Engineering, City University of Hong Kong, Kowloon, Hong Kong, 999077, P. R. China
| | - Yingying Fan
- Department of Materials Science and Engineering, City University of Hong Kong, Kowloon, Hong Kong, 999077, P. R. China
| | - Qingyong Zhang
- Department of Materials Science and Engineering, City University of Hong Kong, Kowloon, Hong Kong, 999077, P. R. China
| | - Rongshu Zhu
- Shenzhen Key Laboratory of Organic Pollution Prevention and Control, Harbin Institute of Technology (Shenzhen), Shenzhen, 518055, P. R. China
| | - Rose Amal
- Particles and Catalysis Research Group, School of Chemical Engineering, The University of New South Wales, Sydney, New South Wales, 2052, Australia
| | - Zongyou Yin
- Research School of Chemistry, Australian National University, Canberra, Australian Capital Territory, 2601, Australia
| | - Zhiyuan Zeng
- Department of Materials Science and Engineering, City University of Hong Kong, Kowloon, Hong Kong, 999077, P. R. China
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Gunjal AR, Sethi YA, Kawade UV, Panmand RP, Ugale CK, Ambekar JD, Nagawade AV, Kale BB. Unique hierarchical SiO 2@ZnIn 2S 4 marigold flower like nanoheterostructure for solar hydrogen production. RSC Adv 2021; 11:14399-14407. [PMID: 35423991 PMCID: PMC8697935 DOI: 10.1039/d1ra01140e] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Accepted: 04/10/2021] [Indexed: 01/01/2023] Open
Abstract
The novel marigold flower like SiO2@ZnIn2S4 nano-heterostructure was fabricated using an in situ hydrothermal method. The nanoheterostructure exhibits hexagonal structure with marigold flower like morphology. The porous marigold flower assembly was constructed using ultrathin nanosheets. Interestingly, the thickness of the nanopetal was observed to be 5-10 nm and tiny SiO2 nanoparticles (5-7 nm) are decorated on the surface of the nanopetals. As the concentration of SiO2 increases the deposition of SiO2 nanoparticles on ZnIn2S4 nanopetals increases in the form of clusters. The optical study revealed that the band gap lies in the visible range of the solar spectrum. Using X-ray photoelectron spectroscopy (XPS), the chemical structure and valence states of the as-synthesized SiO2@ZnIn2S4 nano-heterostructure were confirmed. The photocatalytic activities of the hierarchical SiO2@ZnIn2S4 nano-heterostructure for hydrogen evolution from H2S under natural sunlight have been investigated with regard to the band structure in the visible region. The 0.75% SiO2@ZnIn2S4 showed a higher photocatalytic activity (6730 μmol-1 h-1 g-1) for hydrogen production which is almost double that of pristine ZnIn2S4. Similarly, the hydrogen production from water splitting was observed to be 730 μmol-1 h-1 g-1. The enhanced photocatalytic activity is attributed to the inhibition of charge carrier separation owing to the hierarchical morphology, heterojunction and crystallinity of the SiO2@ZnIn2S4.
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Affiliation(s)
- Aarti R Gunjal
- Dr John Barnabas post-graduate School for Biological Studies, Ahmednagar College Ahmednagar India
- Nanocrystalline Laboratory, Centre for Material for Electronic Technology (CMET), Department of Information Technology, Govt. of India Panchawati, Off Pashan Road Pune 411007 India +91 20 2589 8180 +91 20 2589 9273
| | - Yogesh A Sethi
- Dr John Barnabas post-graduate School for Biological Studies, Ahmednagar College Ahmednagar India
| | - Ujjwala V Kawade
- Dr John Barnabas post-graduate School for Biological Studies, Ahmednagar College Ahmednagar India
| | - Rajendra P Panmand
- Microwave Materials Division, Centre for Material for Electronic Technology (CMET) Shoranur Road, Athani Thrissur-680 581 India
| | - Chitra K Ugale
- Dr John Barnabas post-graduate School for Biological Studies, Ahmednagar College Ahmednagar India
| | - Jalindar D Ambekar
- Nanocrystalline Laboratory, Centre for Material for Electronic Technology (CMET), Department of Information Technology, Govt. of India Panchawati, Off Pashan Road Pune 411007 India +91 20 2589 8180 +91 20 2589 9273
| | - Arvind V Nagawade
- Nanocrystalline Laboratory, Centre for Material for Electronic Technology (CMET), Department of Information Technology, Govt. of India Panchawati, Off Pashan Road Pune 411007 India +91 20 2589 8180 +91 20 2589 9273
| | - Bharat B Kale
- Dr John Barnabas post-graduate School for Biological Studies, Ahmednagar College Ahmednagar India
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Guo Z, Hou H, Zhang J, Cai P, Lin J. Prominent roles of Ni(OH) 2 deposited on ZnIn 2S 4 microspheres in efficient charge separation and photocatalytic H 2 evolution. RSC Adv 2021; 11:12442-12448. [PMID: 35423738 PMCID: PMC8696983 DOI: 10.1039/d1ra01648b] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Accepted: 03/23/2021] [Indexed: 11/21/2022] Open
Abstract
In this work, Ni(OH)2-deposited ZnIn2S4 microspheres (Ni(OH)2/ZnIn2S4) were fabricated using a hydrothermal process, followed by a facile in situ precipitation method. It was demonstrated that the deposition of Ni(OH)2 on ZnIn2S4 effectively promotes the separation of charges photogenerated over ZnIn2S4, and significantly enhances photocatalytic H2 evolution. The optimum rate of the photocatalytic H2 evolution over the 6% Ni(OH)2/ZnIn2S4 composite reaches 4.43 mmol g−1 h−1, which is 21.1 times higher than that of the pure ZnIn2S4. Based on various characterization results and Au photo-deposition on the composite, it was proposed that the capture of the photogenerated holes by the deposited Ni(OH)2 would be responsible for the efficient charge separation, which allows more photogenerated electrons to be left on the ZnIn2S4 for the reduction of H+ to H2 with a higher rate. The capture of the photogenerated holes by the deposited Ni(OH)2 contributes to the efficient charge separation, allowing more photogenerated electrons to be left on ZnIn2S4 to reduce H+ to H2.![]()
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Affiliation(s)
- Zhuang Guo
- Department of Chemistry, Renmin University of China Beijing 100872 People's Republic of China +8610-62516444 +8610-62514133
| | - Huixia Hou
- Department of Chemistry, Renmin University of China Beijing 100872 People's Republic of China +8610-62516444 +8610-62514133
| | - Jingyi Zhang
- Department of Chemistry, Renmin University of China Beijing 100872 People's Republic of China +8610-62516444 +8610-62514133
| | - Pinglong Cai
- Department of Chemistry, Renmin University of China Beijing 100872 People's Republic of China +8610-62516444 +8610-62514133
| | - Jun Lin
- Department of Chemistry, Renmin University of China Beijing 100872 People's Republic of China +8610-62516444 +8610-62514133
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