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Peng C, Chen Y, Gao X, Wei P, Lin Y, Fu L, Zhou B, Zhang M, Jia J, Luan T. Construction of 2D/2D ZnIn 2S 4/Nb 2CT x (MXene) hybrid with hole transport highway and active facet exposure boost photocatalytic hydrogen evolution. J Colloid Interface Sci 2024; 673:958-970. [PMID: 38917670 DOI: 10.1016/j.jcis.2024.06.139] [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: 03/10/2024] [Revised: 06/17/2024] [Accepted: 06/19/2024] [Indexed: 06/27/2024]
Abstract
In this study, leveraging the tunable surface groups of MXene, the two-dimensional (2D) Nb2CTx with OH terminal (NC) was synthesized. 2D ZnIn2S4 (ZIS) nanosheets were prepared with the aid of sodium citrate, enhancing the exposure ratio of active (110) facet. On this basis, 2D/2D ZnIn2S4/Nb2CTx heterojunctions were fabricated to improve photocatalytic hydrogen evolution reaction (HER) performance. The optimized 6 wt%Nb2CTx/ZnIn2S4-450 (6NC/ZIS-450) photocatalyt exhibits a remarkable HER rate of 3603 μmol g-1h-1, which is 10 times superior to that of the original ZnIn2S4. Its apparent quantum efficiency (AQE) at 380 nm reaches 14.9 %. Meanwhile, even after 5 rounds of HER, the activity of 2D/2D ZnIn2S4/Nb2CTx heterojunction remained at 90 %, far superior to that of pure ZnIn2S4 (34 % and 31 %). Energy band structure analysis and density functional theory (DFT) calculation indicate that Nb2CTx adsorbed with OH exhibit a low work function. By serving as a hole cocatalyst, it effectively boosts the photocatalytic HER rate of ZnIn2S4/Nb2CTx heterojunction and inhibits the photocorrosion of ZnIn2S4. This unique insight, via hole transport highways and increased exposure of active facets, effectively enhances the activity and stability of sulfides photocatalysts.
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Affiliation(s)
- Chao Peng
- School of Environmental and Chemical Engineering, Jiangmen Key Laboratory of Synthetic Chemistry and Cleaner Production, Wuyi University, Jiangmen 529020, PR China; Carbon Neutrality Innovation Center, Wuyi University, Jiangmen 529020, PR China; Guangdong Laboratory of Chemistry and Fine Chemical Industry Jieyang Center, Jieyang 515200, PR China.
| | - Yiming Chen
- School of Environmental and Chemical Engineering, Jiangmen Key Laboratory of Synthetic Chemistry and Cleaner Production, Wuyi University, Jiangmen 529020, PR China
| | - Xingyue Gao
- School of Environmental and Chemical Engineering, Jiangmen Key Laboratory of Synthetic Chemistry and Cleaner Production, Wuyi University, Jiangmen 529020, PR China
| | - Ping Wei
- School of Pharmacy and Food Engineering, Wuyi University, Jiangmen 529020, PR China
| | - Yihao Lin
- School of Environmental and Chemical Engineering, Jiangmen Key Laboratory of Synthetic Chemistry and Cleaner Production, Wuyi University, Jiangmen 529020, PR China
| | - Li Fu
- School of Environmental and Chemical Engineering, Jiangmen Key Laboratory of Synthetic Chemistry and Cleaner Production, Wuyi University, Jiangmen 529020, PR China
| | - Bingpu Zhou
- Institute of Applied Physics and Materials Engineering, University of Macau, Macao SAR 999078, PR China
| | - Mengchen Zhang
- School of Environmental and Chemical Engineering, Jiangmen Key Laboratory of Synthetic Chemistry and Cleaner Production, Wuyi University, Jiangmen 529020, PR China; Carbon Neutrality Innovation Center, Wuyi University, Jiangmen 529020, PR China; Guangdong Laboratory of Chemistry and Fine Chemical Industry Jieyang Center, Jieyang 515200, PR China
| | - Jianbo Jia
- School of Environmental and Chemical Engineering, Jiangmen Key Laboratory of Synthetic Chemistry and Cleaner Production, Wuyi University, Jiangmen 529020, PR China; Carbon Neutrality Innovation Center, Wuyi University, Jiangmen 529020, PR China; Guangdong Laboratory of Chemistry and Fine Chemical Industry Jieyang Center, Jieyang 515200, PR China
| | - Tiangang Luan
- School of Environmental and Chemical Engineering, Jiangmen Key Laboratory of Synthetic Chemistry and Cleaner Production, Wuyi University, Jiangmen 529020, PR China; Carbon Neutrality Innovation Center, Wuyi University, Jiangmen 529020, PR China; Guangdong Laboratory of Chemistry and Fine Chemical Industry Jieyang Center, Jieyang 515200, PR China
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Cai M, Sun S, Bao J. Synchrotron Radiation Based X-ray Absorption Spectroscopy: Fundamentals and Applications in Photocatalysis. Chemphyschem 2024; 25:e202300939. [PMID: 38374799 DOI: 10.1002/cphc.202300939] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2023] [Accepted: 02/19/2024] [Indexed: 02/21/2024]
Abstract
Photocatalysis is one of the most promising green technologies to utilize solar energy for clean energy achievement and environmental governance. There is a knotty problem to rational designing high-performance photocatalyst, which largely depends on an in-depth insight into their structure-activity relationships and complex photocatalytic reaction mechanisms. Synchrotron radiation based X-ray absorption spectroscopy (XAS) is an important characterization method for photocatlayst to offer the element-specific key geometric and electronic structural information at the atomic level, on this basis, time-resolved XAS technique has a huge impact on mechanistic understanding of photochemical reaction owing to their powerful ability to probe, in real-time, the electronic and geometric structures evolution within photocatalysis reactions. This review will focus on the fundamentals of XAS and their applications in photocatalysis. The detailed applications obtained from XAS is described through the following aspects: 1) identifying local structure of photocatalyst; 2) uncovering in situ structure and chemical state evolution during photocatalysis; 3) revealing the photoexcited process. We will provide an in depth understanding on how the XAS method can guide the rational design of highly efficient photocatalyst. Finally, a systematic summary of XAS and related significance is made and the research perspectives are suggested.
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Affiliation(s)
- Mengdie Cai
- School of Chemistry and Chemical Engineering, Anhui University, Hefei, 230601, China
| | - Song Sun
- School of Chemistry and Chemical Engineering, Anhui University, Hefei, 230601, China
| | - Jun Bao
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, 230029, China
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Feng X, Chen H, Yin H, Yuan C, Lv H, Fei Q, Zhang Y, Zhao Q, Zheng M, Zhang Y. Facile Synthesis of P-Doped ZnIn 2S 4 with Enhanced Visible-Light-Driven Photocatalytic Hydrogen Production. Molecules 2023; 28:molecules28114520. [PMID: 37298996 DOI: 10.3390/molecules28114520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 05/26/2023] [Accepted: 05/29/2023] [Indexed: 06/12/2023] Open
Abstract
ZnIn2S4 (ZIS) is widely used in the field of photocatalytic hydrogen production due to its unique photoelectric properties. Nonetheless, the photocatalytic performance of ZIS usually faces problems of poor conductivity and rapid recombination of charge carriers. Heteroatom doping is often regarded as one of the effective strategies for improving the catalytic activity of photocatalysts. Herein, phosphorus (P)-doped ZIS was prepared by hydrothermal method, whose photocatalytic hydrogen production performance and energy band structure were fully studied. The band gap of P-doped ZIS is about 2.51 eV, which is slightly smaller than that of pure ZIS. Moreover, due to the upward shift of its energy band, the reduction ability of P-doped ZIS is enhanced, and P-doped ZIS also exhibits stronger catalytic activity than pure ZIS. The optimized P-doped ZIS exhibits a hydrogen production rate of 1566.6 μmol g-1 h-1, which is 3.8 times that of the pristine ZIS (411.1 μmol g-1 h-1). This work provides a broad platform for the design and synthesis of phosphorus-doped sulfide-based photocatalysts for hydrogen evolution.
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Affiliation(s)
- Xiangrui Feng
- School of Physics and Physical Engineering, Qufu Normal University, Qufu 273165, China
| | - Hongji Chen
- School of Physics and Physical Engineering, Qufu Normal University, Qufu 273165, China
| | - Hongfei Yin
- School of Physics and Physical Engineering, Qufu Normal University, Qufu 273165, China
| | - Chunyu Yuan
- School of Physics and Physical Engineering, Qufu Normal University, Qufu 273165, China
| | - Huijun Lv
- School of Physics and Physical Engineering, Qufu Normal University, Qufu 273165, China
| | - Qian Fei
- School of Physics and Physical Engineering, Qufu Normal University, Qufu 273165, China
| | - Yujin Zhang
- School of Physics and Physical Engineering, Qufu Normal University, Qufu 273165, China
| | - Qiuyu Zhao
- School of Physics and Physical Engineering, Qufu Normal University, Qufu 273165, China
| | - Mengmeng Zheng
- School of Physics and Physical Engineering, Qufu Normal University, Qufu 273165, China
| | - Yongzheng Zhang
- School of Physics and Physical Engineering, Qufu Normal University, Qufu 273165, China
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