Atomically dispersed main group magnesium on cadmium sulfide as the active site for promoting photocatalytic hydrogen evolution catalysis
Photoabsorption charge separation/transfer and surface reaction are the three main factors influencing the efficiency of photocatalysis. Band structure engineering has been extensively applied to improve the light absorption of photocatalysts, however, most of the developed photocatalysts still suff...
| Main Authors: | , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2022
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/160072 |
| _version_ | 1826117773933150208 |
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| author | Chen, Ran Chen, Juan Che, Huinan Zhou, Gang Ao, Yanhui Liu, Bin |
| author2 | School of Chemical and Biomedical Engineering |
| author_facet | School of Chemical and Biomedical Engineering Chen, Ran Chen, Juan Che, Huinan Zhou, Gang Ao, Yanhui Liu, Bin |
| author_sort | Chen, Ran |
| collection | NTU |
| description | Photoabsorption charge separation/transfer and surface reaction are the three main factors influencing the efficiency of photocatalysis. Band structure engineering has been extensively applied to improve the light absorption of photocatalysts, however, most of the developed photocatalysts still suffer from low photocatalytic performance due to the limited active site(s) and fast recombination of photogenerated charge carriers. In this work, atomically dispersed main group magnesium (Mg) is introduced onto CdS monodispersed nanospheres, which greatly enhances the photocatalytic hydrogen evolution reaction. The photocatalytic hydrogen evolution reaction rate reaches 30.6 mmol·gcatalyst-1·h-1, which is about 11.8 and 2.5 times that of pure CdS and Pt (2 wt.%)-CdS. The atomically dispersed Mg on CdS acts as an electron sink to trap photogenerated electrons, and at the same time, greatly reduces the Gibbs free energy of hydrogen evolution reaction (HER) and accelerates HER. |
| first_indexed | 2024-10-01T04:32:49Z |
| format | Journal Article |
| id | ntu-10356/160072 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T04:32:49Z |
| publishDate | 2022 |
| record_format | dspace |
| spelling | ntu-10356/1600722022-07-12T06:16:01Z Atomically dispersed main group magnesium on cadmium sulfide as the active site for promoting photocatalytic hydrogen evolution catalysis Chen, Ran Chen, Juan Che, Huinan Zhou, Gang Ao, Yanhui Liu, Bin School of Chemical and Biomedical Engineering School of Physical and Mathematical Sciences Engineering::Chemical engineering Photocatalysis Hydrogen Photoabsorption charge separation/transfer and surface reaction are the three main factors influencing the efficiency of photocatalysis. Band structure engineering has been extensively applied to improve the light absorption of photocatalysts, however, most of the developed photocatalysts still suffer from low photocatalytic performance due to the limited active site(s) and fast recombination of photogenerated charge carriers. In this work, atomically dispersed main group magnesium (Mg) is introduced onto CdS monodispersed nanospheres, which greatly enhances the photocatalytic hydrogen evolution reaction. The photocatalytic hydrogen evolution reaction rate reaches 30.6 mmol·gcatalyst-1·h-1, which is about 11.8 and 2.5 times that of pure CdS and Pt (2 wt.%)-CdS. The atomically dispersed Mg on CdS acts as an electron sink to trap photogenerated electrons, and at the same time, greatly reduces the Gibbs free energy of hydrogen evolution reaction (HER) and accelerates HER. Agency for Science, Technology and Research (A*STAR) Ministry of Education (MOE) We are grateful for the financial support from the Natural Science Foundation of China (51979081), Fundamental Research Funds for the Central Universities (No. B200202103), Ministry of Education of Singapore (Tier 1: RG4/20 and Tier 2: MOET2EP10120-0002), Agency for Science, Technology and Research (AME IRG: A20E5c0080), and PAPD. 2022-07-12T06:16:01Z 2022-07-12T06:16:01Z 2022 Journal Article Chen, R., Chen, J., Che, H., Zhou, G., Ao, Y. & Liu, B. (2022). Atomically dispersed main group magnesium on cadmium sulfide as the active site for promoting photocatalytic hydrogen evolution catalysis. Chinese Journal of Structural Chemistry 结构化学, 41(1), 2201014-2201018. https://dx.doi.org/10.14102/j.cnki.0254-5861.2021-0027 0254-5861 https://hdl.handle.net/10356/160072 10.14102/j.cnki.0254-5861.2021-0027 2-s2.0-85124311033 1 41 2201014 2201018 en RG4/20 MOET2EP10120-0002 A20E5c0080 Chinese Journal of Structural Chemistry 结构化学 © 2022《结构化学》编辑部. All rights reserved. |
| spellingShingle | Engineering::Chemical engineering Photocatalysis Hydrogen Chen, Ran Chen, Juan Che, Huinan Zhou, Gang Ao, Yanhui Liu, Bin Atomically dispersed main group magnesium on cadmium sulfide as the active site for promoting photocatalytic hydrogen evolution catalysis |
| title | Atomically dispersed main group magnesium on cadmium sulfide as the active site for promoting photocatalytic hydrogen evolution catalysis |
| title_full | Atomically dispersed main group magnesium on cadmium sulfide as the active site for promoting photocatalytic hydrogen evolution catalysis |
| title_fullStr | Atomically dispersed main group magnesium on cadmium sulfide as the active site for promoting photocatalytic hydrogen evolution catalysis |
| title_full_unstemmed | Atomically dispersed main group magnesium on cadmium sulfide as the active site for promoting photocatalytic hydrogen evolution catalysis |
| title_short | Atomically dispersed main group magnesium on cadmium sulfide as the active site for promoting photocatalytic hydrogen evolution catalysis |
| title_sort | atomically dispersed main group magnesium on cadmium sulfide as the active site for promoting photocatalytic hydrogen evolution catalysis |
| topic | Engineering::Chemical engineering Photocatalysis Hydrogen |
| url | https://hdl.handle.net/10356/160072 |
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