Peptide Self-Assembled Biofilm with Unique Electron Transfer Flexibility for Highly Efficient Visible-Light-Driven Photocatalysis

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• 作者：Yun-Xiang Pan ; Huai-Ping Cong ; Yu-Long Men ; Sen Xin ; Zheng-Qing Sun ; Chang-Jun Liu ; Shu-Hong Yu
• 刊名：ACS Nano
• 出版年：2015
• 出版时间：November 24, 2015
• 年：2015
• 卷：9
• 期：11
• 页码：11258-11265
• 全文大小：543K
• ISSN：1936-086X

文摘

Inspired by natural photosynthesis, biomaterial-based catalysts are being confirmed to be excellent for visible-light-driven photocatalysis, but are far less well explored. Herein, an ultrathin and uniform biofilm fabricated from cold-plasma-assisted peptide self-assembly was employed to support Eosin Y (EY) and Pt nanoparticles to form an EY/Pt/Film catalyst for photocatalytic water splitting to H₂ and photocatalytic CO₂ reduction with water to CO, under irradiation of visible light. The H₂ evolution rate on EY/Pt/Film is 62.1 渭mol h^鈥?, which is about 5 times higher than that on Pt/EY and 1.5 times higher than that on the EY/Pt/TiO₂ catalyst. EY/Pt/Film exhibits an enhanced CO evolution rate (19.4 渭mol h^鈥?), as compared with Pt/EY (2.8 渭mol h^鈥?) and EY/Pt/TiO₂ (6.1 渭mol h^鈥?). The outstanding activity of EY/Pt/Film results from the unique flexibility of the biofilm for an efficient transfer of the photoinduced electrons. The present work is helpful for designing efficient biomaterial-based catalysts for visible-light-driven photocatalysis and for imitating natural photosynthesis.