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Lv H, Zhou C, Shen Q, Kong Y, Wan B, Suo Z, Wang G, Wang G, Liu Y. Rationally designed CaTiO 3/Mn 0.5Cd 0.5S/Ni 3C S-scheme/Schottky integrated heterojunction for efficient photocatalytic H 2 evolution. J Colloid Interface Sci 2024; 677:365-376. [PMID: 39151229 DOI: 10.1016/j.jcis.2024.08.072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2024] [Revised: 08/05/2024] [Accepted: 08/11/2024] [Indexed: 08/19/2024]
Abstract
Developing effective photocatalysts to achieve stable and efficient solar-induced hydrogen production remains a significant challenge due to rapid photocarrier recombination and sluggish hydrogen evolution kinetics. Here, a multi-interfacial engineering strategy involving the decoration of metallic Ni3C onto CaTiO3/Mn0.5Cd0.5S was proposed to create an S-scheme/Schottky hybrid heterostructure with multiple carrier transport paths for effective photocatalytic H2 production. Exploiting the synergy between S-scheme heterojunction and Schottky barrier, the engineered ternary CaTiO3/Mn0.5Cd0.5S/Ni3C hybrid heterojunction exhibits outstanding photostability and significantly enhanced hydrogen evolution activity of 79.1 mmol g-1 h-1, which was about 4.55, 3.22 and 2.59 times greater than Mn0.5Cd0.5S, Mn0.5Cd0.5S/Ni3C, and CaTiO3/Mn0.5Cd0.5S, respectively. By creating an S-scheme heterojunction between CaTiO3 and Mn0.5Cd0.5S, accompanied by a robust internal electric field (IEF), spatial charge separation can be effectively accelerated while ensuring the simultaneous preservation of highly active electrons and holes. Meanwhile, Ni3C nanoparticles, acting as a Schottky-junction H2 generation cocatalyst, can efficiently trap the photoinduced electrons to establish multiple charge transfer channels and supply ample active sites for photoreduction reaction, thereby further optimizing the hydrogen generation kinetics. The integration of a Schottky barrier and S-scheme heterojunction in this research is expected to offer new perspectives for designing other highly effective hybrid catalysts for solar-to-hydrogen fuel conversion.
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Affiliation(s)
- Hua Lv
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Chayuan Zhou
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Qinhui Shen
- College of Physics, Henan Normal University, Xinxiang, Henan 453007, China
| | - Yuanfang Kong
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Baoliang Wan
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Zhiyun Suo
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Gongke Wang
- School of Materials Science and Engineering, Henan Engineering Research Center of Design and Recycle for Advanced Electrochemical Energy Storage Materials, Henan Normal University, Xinxiang, Henan 453007, China.
| | - Guangtao Wang
- College of Physics, Henan Normal University, Xinxiang, Henan 453007, China.
| | - Yumin Liu
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China.
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Tian J, Guan C, Liu C, Fan J, Zhu Y, Sun T, Liu E. Double S-scheme Cu 2-xSe/twinned-Cd 0.5Zn 0.5S homo-heterojunctions with surface plasmon effects for efficient photocatalytic H 2 evolution. J Colloid Interface Sci 2024; 666:481-495. [PMID: 38613971 DOI: 10.1016/j.jcis.2024.04.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2024] [Revised: 04/02/2024] [Accepted: 04/02/2024] [Indexed: 04/15/2024]
Abstract
The enhancement of charge separation and utilization efficiency in both the bulk phase and interface of semiconductor photocatalysts, as well as the expansion of light absorption range, are crucial research topics in the field of photocatalysis. To address this issue, twinned Cd0.5Zn0.5S (T-CZS) homojunctions consisting of wurtzite Cd0.5Zn0.5S (WZ-CZS) and zinc blende Cd0.5Zn0.5S (ZB-CZS) were synthesized via a hydrothermal method to facilitate the bulk-phase charge separation. Meanwhile, Cu2-xSe with localized surface plasmon resonance effect (LSPR) generated by Cu vacancies was also obtained through a hydrothermal process. Due to their opposite electronegativity, a solvent evaporation strategy was employed to combine Cu2-xSe and T-CZS by intermolecular electrostatic. After optimization, the photocatalytic hydrogen (H2) evolution rate of 5 wt% Cu2-xSe/T-CZS reached an impressive value of 60 mmol∙h-1∙g-1, which was 4.6 and 66.6 times higher than that of pure Cu2-xSe and T-CZS, respectively. Furthermore, this composites demonstrated a remarkable rate of 0.46 mmol∙h-1∙g-1 under near-infrared (NIR) wavelength (>800 nm). The enhanced performance observed in Cu2-xSe/T-CZS can be attributed to its unique and efficient double S-scheme charge transfer mechanism which effectively suppresses rapid recombination of electron-hole pairs both within the bulk phase and at the surface interfaces; this conclusion is supported by Density Functional Theory (DFT) calculations as well as electron paramagnetic resonance spectroscopy analysis. Moreover, incorporation of Cu2-xSe enables effective utilization ultraviolet visible-near infrared (UV-Vis-NIR) light by the composites while facilitating injection "hot electrons" into T-CZS for promoting photocatalytic reactions. This study provides a potential strategy for achieving efficient solar energy conversion through synergistic integration of non-stoichiometric plasmonic materials with photocatalysts with twinned-twinned structures.
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Affiliation(s)
- Jingzhuo Tian
- School of Chemical Engineering/Xi'an Key Laboratory of Special Energy Materials, Northwest University, Xi'an 710069, PR China; Shaanxi Key Laboratory for Carbon Neutral Technology, Xi'an 710069, PR China
| | - Chaohong Guan
- University of Michigan-Shanghai Jiao Tong University Joint Institute, Shanghai Jiao Tong University, Shanghai 200240, PR China
| | - Chao Liu
- School of Materials Science and Engineering, Yancheng Institute of Technology, Yancheng 224051, PR China
| | - Jun Fan
- School of Chemical Engineering/Xi'an Key Laboratory of Special Energy Materials, Northwest University, Xi'an 710069, PR China
| | - Yonghong Zhu
- School of Chemical Engineering/Xi'an Key Laboratory of Special Energy Materials, Northwest University, Xi'an 710069, PR China.
| | - Tao Sun
- School of Chemical Engineering/Xi'an Key Laboratory of Special Energy Materials, Northwest University, Xi'an 710069, PR China; Shaanxi Key Laboratory for Carbon Neutral Technology, Xi'an 710069, PR China.
| | - Enzhou Liu
- School of Chemical Engineering/Xi'an Key Laboratory of Special Energy Materials, Northwest University, Xi'an 710069, PR China; Shaanxi Key Laboratory for Carbon Neutral Technology, Xi'an 710069, PR China.
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Yan D, Miao H, Fan J, Yu Q, Liu E, Sun T. Constructing Dual Cocatalysts of Ni 2P-NiS-Decorated TiO 2 for Boosting Photocatalytic H 2 Evolution. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:16648-16656. [PMID: 37946361 DOI: 10.1021/acs.langmuir.3c02719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2023]
Abstract
The loading of cocatalysts is an effective approach to optimize the separation of carriers during photocatalytic processes. Among them, cocatalysts often work independently during the photocatalytic production of H2. However, an investigation of the synergistic effect of dual cocatalysts is beneficial for further promoting photocatalytic H2 production activity. In this work, dual cocatalyst Ni2P-NiS-modified TiO2 nanosheets were fabricated through a solvent evaporation method. The investigation indicates that Ni2P-NiS can widen the light absorption range and reduce the contact angle between TiO2 and water from 26.71 to 8.27°, which facilitates the adsorption of water molecules. Besides, the introduction of Ni2P-NiS can decrease the overpotential of H2 evolution and induce more electrochemically active surface area. The photocatalytic tests show that the H2 production rate of 15% Ni2P-NiS/TiO2 can reach up to 4891.6 μmol·g-1·h-1, which is 30.2, 4.4, and 1.3 times than pure TiO2 (161.8 μmol·g-1·h-1), 15% Ni2P/TiO2 (1112.1 μmol·g-1·h-1), and 15% NiS/TiO2 (3678.1 μmol·g-1·h-1), respectively. The enhancement mechanism of photocatalytic H2 production is attributed to the Schottky barrier effect between Ni2P-NiS nanoparticles and TiO2 nanosheets, which can enormously promote the interface charge separation and transfer, and enhance the kinetics of H2 production. This work provides a potential strategy for enhancement H2 production using appropriate dual cocatalyst-decorated semiconductor materials.
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Affiliation(s)
- Dan Yan
- School of Chemical Engineering/Xi'an Key Laboratory of Special Energy Materials, Northwest University, Xi' an 710069, P. R. China
| | - Hui Miao
- School of Physics, Northwest University, Xi'an 710069, PR China
| | - Jun Fan
- School of Chemical Engineering/Xi'an Key Laboratory of Special Energy Materials, Northwest University, Xi' an 710069, P. R. China
| | - Qiushuo Yu
- School of Chemical Engineering/Xi'an Key Laboratory of Special Energy Materials, Northwest University, Xi' an 710069, P. R. China
| | - Enzhou Liu
- School of Chemical Engineering/Xi'an Key Laboratory of Special Energy Materials, Northwest University, Xi' an 710069, P. R. China
| | - Tao Sun
- School of Chemical Engineering/Xi'an Key Laboratory of Special Energy Materials, Northwest University, Xi' an 710069, P. R. China
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Yan D, Li Y, Zhao F, Sun T, Fan J, Yu Q, Liu E. A direct Z-scheme NiCo 2O 4/ZnIn 2S 4 heterojunction for highly efficient visible-light-driven H 2 evolution. Dalton Trans 2023; 52:11591-11600. [PMID: 37548591 DOI: 10.1039/d3dt01737k] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/08/2023]
Abstract
Exploiting efficient and stable photocatalysts is the primary goal of photocatalytic water splitting for H2 production. In this work, a sea urchin-like bimetallic NiCo2O4-decorated ZnIn2S4 heterojunction was fabricated via a solvent evaporation method. Investigation shows that the introduction NiCo2O4 can expand the UV-vis absorption range, enhance the absorption intensity, promote the charge separation, decrease the charge transfer resistance, induce more active sites, and decrease the H2 evolution overpotential of the composite. Besides, the charge transfer between NiCo2O4 and ZnIn2S4 follows a Z-scheme route based on the ˙OH radical capture experiments; this can preserve the strong oxidation-reduction reaction ability of photogenerated electrons and holes, leading to a faster H2 evolution rate, which reaches 17.28 mmol g-1 h-1 over the 4.8%-NiCo2O4/ZnIn2S4 composite under 300 W Xe lamp irradiation in 20 vol% triethanolamine (TEOA) solution and is 3.0 times higher than that of ZnIn2S4. In addition, NiCo2O4/ZnIn2S4 also has excellent stability during 5 consecutive cycles. This work provides an effective method for constructing a highly effective Z-scheme heterojunction system for photocatalytic H2 production.
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Affiliation(s)
- Dan Yan
- School of Chemical Engineering/Xi'an Key Laboratory of Special Energy Materials, Northwest University, Xi'an, 710069, P. R. China.
| | - Yan Li
- School of Chemical Engineering/Xi'an Key Laboratory of Special Energy Materials, Northwest University, Xi'an, 710069, P. R. China.
| | - Fangli Zhao
- School of Chemical Engineering/Xi'an Key Laboratory of Special Energy Materials, Northwest University, Xi'an, 710069, P. R. China.
| | - Tao Sun
- School of Chemical Engineering/Xi'an Key Laboratory of Special Energy Materials, Northwest University, Xi'an, 710069, P. R. China.
| | - Jun Fan
- School of Chemical Engineering/Xi'an Key Laboratory of Special Energy Materials, Northwest University, Xi'an, 710069, P. R. China.
| | - Qiushuo Yu
- School of Chemical Engineering/Xi'an Key Laboratory of Special Energy Materials, Northwest University, Xi'an, 710069, P. R. China.
| | - Enzhou Liu
- School of Chemical Engineering/Xi'an Key Laboratory of Special Energy Materials, Northwest University, Xi'an, 710069, P. R. China.
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Jing L, Xie M, Xu Y, Tong C, Song Y, Du X, Zhao H, Zhong N, Li H, Gates ID, Hu J. O-doped and nitrogen vacancies 3D C3N4 activation of peroxydisulfate for pollutants degradation and transfer hydrogenation of nitrophenols with water. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2023.123540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2023]
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Liu H, Zhao F, Ming S, Du Y, Zhao J, Zhang W, Zhang J. Effect of substitution position of carbazole based conjugated polymers on the photocatalytic hydrogen evolution activities of conjugated polymer/g-C3N4 heterojunction catalysts. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2023.123242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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Heterojunction Design between WSe2 Nanosheets and TiO2 for Efficient Photocatalytic Hydrogen Generation. Catalysts 2022. [DOI: 10.3390/catal12121668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Design and fabrication of efficient and stable photocatalysts are critically required for practical applications of solar water splitting. Herein, a series of WSe2/TiO2 nanocomposites were constructed through a facile mechanical grinding method, and all of the nanocomposites exhibited boosted photocatalytic hydrogen evolution. It was discovered that the enhanced photocatalytic performance was attributed to the efficient electron transfer from TiO2 to WSe2 and the abundant active sites provided by WSe2 nanosheets. Moreover, the intimate heterojunction between WSe2 nanosheets and TiO2 favors the interfacial charge separation. As a result, a highest hydrogen evolution rate of 2.28 mmol/g·h, 114 times higher than pristine TiO2, was obtained when the weight ratio of WSe2/(WSe2 + TiO2) was adjusted to be 20%. The designed WSe2/TiO2 heterojunctions can be regarded as a promising photocatalysts for high-throughput hydrogen production.
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Zhou Y, Ye Q, Shi X, Zhang Q, Song Q, Zhou C, Li D, Jiang D. Ni 3B as p-Block Element-Modulated Cocatalyst for Efficient Photocatalytic CO 2 Reduction. Inorg Chem 2022; 61:17268-17277. [PMID: 36259672 DOI: 10.1021/acs.inorgchem.2c02850] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Due to the multiple electron and proton transfer processes involved, the photogenerated charges are easily recombined during the photocatalytic reduction of CO2, making the generation of the eight-electron product CH4 kinetically more difficult. Herein, Ni3B nanoparticles modulated by p-block element were combined with TiO2 nanosheets to construct a novel Schottky junction photocatalyst (Ni3B/TiO2) for the selective photocatalytic conversion of CO2 to CH4. The formed Ni3B/TiO2 photocatalyst with Schottky junction ensures a transfer pathway of photogenerated electrons from TiO2 to Ni3B, which facilitates the accumulation of electrons on the surface of Ni3B and subsequently improves the activity of photocatalytic CO2 reduction to CH4. The optimized Ni3B/TiO2 Schottky junction shows an improved CH4 yield of 30.03 μmol g-1 h-1, which was much higher than those of TiO2 (1.62 μmol g-1 h-1), NiO/TiO2 (2.44 μmol g-1 h-1), and Ni/TiO2 (4.3 μmol g-1 h-1). This work demonstrated that the introduction of p-block elements can alleviate the scaling relationship effect of pure metal cocatalysts to a certain extent, and the modified Ni3B can be used as a promising new cocatalyst to effectively improve the selective photocatalytic of CO2 to CH4.
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Affiliation(s)
- Yimeng Zhou
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Qianjin Ye
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Xiangli Shi
- Institute for Energy Research, Jiangsu University, Zhenjiang 212013, China
| | - Qiong Zhang
- Institute for Energy Research, Jiangsu University, Zhenjiang 212013, China
| | - Qi Song
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Changjian Zhou
- Institute for Energy Research, Jiangsu University, Zhenjiang 212013, China
| | - Di Li
- Institute for Energy Research, Jiangsu University, Zhenjiang 212013, China
| | - Deli Jiang
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China
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