https://scholars.lib.ntu.edu.tw/handle/123456789/575731
標題: | In situ Observation of Electrodeposited Bimetallic p-Si Micropillar Array Photocathode for Solar-Driven Hydrogen Evolution | 作者: | Tung C.-W Hou C.-H Lin H.-T Zheng Y Huang Y.-P Liao Y.-F Shiue J.-J Chen H.M. HAO MING CHEN |
關鍵字: | Catalysts; Crystal atomic structure; Driers (materials); Electrodeposition; Field emission cathodes; Hydrogen production; Photocathodes; Silicon; Solar absorbers; Solar power generation; Alkaline conditions; Design and Development; Earth-abundant materials; In-situ formations; In-situ measurement; In-situ observations; Micropillar arrays; Photocurrent response; Hydrogen evolution reaction | 公開日期: | 2020 | 卷: | 4 | 期: | 8 | 來源出版物: | Solar RRL | 摘要: | The integration of Earth-abundant materials with light-harvesting absorbers to create a high-efficiency photocathode is a promising approach for solar-driven water splitting. It is essential for such systems to provide a practical photocurrent response and overpotential for driving hydrogen production. Herein, electrodeposited Ni–M (M = Co, Fe, Mo) is investigated as a surface catalyst onto p-type silicon micropillar arrays for solar-driven hydrogen evolution, and the generation of catalytic active species by in situ and ex situ tracking methods is directly observed. The dynamic electronic and atomic structures of highly active surface catalysts are identified during photocatalysis in alkaline condition. Furthermore, the incorporation of high-valence Mo species acts as a key promoter for triggering the in situ formation of active Ni2+ species on the surface of alloys. These findings offer guidelines for the design and development of highly efficient catalytic photocathodes. ? 2020 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85089234807&doi=10.1002%2fsolr.202000028&partnerID=40&md5=260fb87831db60894b4868e1ca632a6f https://scholars.lib.ntu.edu.tw/handle/123456789/575731 |
ISSN: | 2367198X | DOI: | 10.1002/solr.202000028 | SDG/關鍵字: | Catalysts; Crystal atomic structure; Driers (materials); Electrodeposition; Field emission cathodes; Hydrogen production; Photocathodes; Silicon; Solar absorbers; Solar power generation; Alkaline conditions; Design and Development; Earth-abundant materials; In-situ formations; In-situ measurement; In-situ observations; Micropillar arrays; Photocurrent response; Hydrogen evolution reaction |
顯示於: | 化學系 |
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