| 碳铂双助催化剂增强CdS空心球光催化产氢性能 |
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| 引用本文： | 唐士朋,夏阳,范佳杰,程蓓,余家国,Wingkei Ho. 碳铂双助催化剂增强CdS空心球光催化产氢性能[J]. 催化学报, 2021, 42(5): 743-752. DOI: 10.1016/S1872-2067(20)63695-6 |
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| 作者姓名： | 唐士朋 夏阳 范佳杰 程蓓 余家国 Wingkei Ho |
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| 作者单位： | 武汉理工大学材料复合新技术国家重点实验室, 湖北武汉430070;郑州大学材料科学与工程学院, 河南郑州450001;香港教育大学科学与环境学系, 香港 |
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| 基金项目： | the National Natural Science Foun-dation of China ;佛山仙湖实验室创新基金;香港RGC项目;and the Innovative Research Funds of Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory ;This study was also partially supported by the General Re-search Fund-Research Grant Council of Hong Kong Government ;This work was supported by the National Key Research and Development Program of China ;and Dean Research Fund 19-20, EdUHK. 国家重点研发计划;国家自然科学基金 |
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| 摘 要： | 利用半导体光催化分解水产氢是将太阳能转换为化学能最有前景的方法之一.在众多的半导体光催化剂中,硫化镉(CdS)不仅具有可见光响应的带隙值(约2.4 eV),而且其导带底和价带顶的能级横跨于水的氧化还原电势两端,能够在可见光照射下分解水产氢,这使得CdS成为一种热门的光催化剂而被广泛研究.然而,单一CdS由于光生电子?空...
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| 关 键 词： | CdS空心球 碳 铂 双助催化剂 协同效应 光催化产氢 |
Enhanced photocatalytic H2 production performance of CdS hollow spheres using C and Pt as bi-cocatalysts |
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| Shipeng Tang,Yang Xia,Jiajie Fan,Bei Cheng,Jiaguo Yu,Wingkei Ho. Enhanced photocatalytic H2 production performance of CdS hollow spheres using C and Pt as bi-cocatalysts[J]. Chinese Journal of Catalysis, 2021, 42(5): 743-752. DOI: 10.1016/S1872-2067(20)63695-6 |
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| Authors: | Shipeng Tang Yang Xia Jiajie Fan Bei Cheng Jiaguo Yu Wingkei Ho |
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| Affiliation: | (State Key Laboratory of Advanced Technology for Materials Synthesis and Processing,Wuhan University of Technology,Wuhan 430070,Hubei,China;School of Materials Science and Engineering,Zhengzhou University,Zhengzhou 450001,Henan,China;Department of Science and Environmental Studies,The Education University of Hong Kong,Tai Po,N.T.Hong Kong 999077,China) |
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| Abstract: | Photocatalytic H2 production from water splitting is an effective method to solve energy crisis and environmental pollution simultaneously. Herein, carbon@CdS composite hollow spheres (C@CdS-HS) are fabricated via a facile hydrothermal method using porous carbon hollow spheres (C-HS) as the template. The C@CdS-HS shows an excellent photocatalytic H2-generation rate of 20.9 mmol h-1 g-1 (apparent quantum efficiency of 15.3％ at 420 nm), with 1.0 wt％ Pt as a cocatalyst under simulated sunlight irradiation; this rate is 69.7, 13.9, and 3.9 times higher than that obtained with pure CdS hollow spheres (CdS-HS), C@CdS-HS, and CdS-HS/Pt, respectively. The enhanced photocatalytic H2-evolution activity of C@CdS-HS/Pt is due to the synergistic effect of C and Pt as the bi-cocatalyst. The C-HS serves not only as an active site provider but also as an electron trans-porter and reservoir. Moreover, C-HS has a strong photothermal effect that is induced by near in-frared light, which kinetically accelerates the H2-production reaction. Additionally, the underlying charge transfer pathway and process from CdS to C-HS is revealed. This work highlights the poten-tial application of C-HS-based nanocomposites in solar-to-chemical energy conversion. |
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| Keywords: | CdS hollow sphere Carbon Platinum Bi-cocatalyst Synergistic effect Photocatalytic hydrogen production |
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