https://scholars.lib.ntu.edu.tw/handle/123456789/427188
標題: | Dynamic Evolution of Atomically Dispersed Cu Species for CO2 Photoreduction to Solar Fuels | 作者: | Yuan, L. Hung, S.-F. Tang, Z.-R. Chen, H.M. Xiong, Y. Xu, Y.-J. |
關鍵字: | atomically dispersed; CO2 reduction; Cu species; dynamic evolution; photocatalysis | 公開日期: | 2019 | 卷: | 9 | 期: | 6 | 起(迄)頁: | 4824-4833 | 來源出版物: | ACS Catalysis | 摘要: | Probing the dynamic evolution of catalyst structure and chemical state under operating conditions is highly important for investigating the reaction mechanism of catalysis more in depth, which in turn advances the rational design of redox catalysis in using renewable energy to produce fuels. Herein, the evolution of atomically dispersed Cu species supported by mesoporous TiO2 (mTiO2) during the in situ photocatalytic reduction of CO2 with H2O to valuable solar fuels has been reported. The results unveil that the initial atomically dispersed Cu(II) undergoes reduction to Cu(I) and ultimately to Cu(0); the Cu(I)/Cu(0) mixture is proposed to be more effective for CH4 formation. In addition, the enhanced CO2 adsorption ability benefited from the structural advantage of mTiO2 and the elevated charge carrier transfer synergistically contributes to the CO2 photoreduction. It is anticipated that this work would guide the rational design of Cu-based light-harvesting catalysts for artificial CO2 reduction to value-added feedstocks and inspire further interest in using in situ techniques to study the structure-activity interplay of photocatalysts under operating reaction conditions. © 2019 American Chemical Society. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85065591842&doi=10.1021%2facscatal.9b00862&partnerID=40&md5=15f0eb5c7a42836ec698048a7ab6fd01 https://scholars.lib.ntu.edu.tw/handle/123456789/427188 |
DOI: | 10.1021/acscatal.9b00862 | SDG/關鍵字: | Carbon dioxide; Catalysis; Fuels; Photocatalysis; Photocatalysts; Titanium dioxide; atomically dispersed; Charge carrier transfer; CO2 reduction; Cu species; Dynamic evolution; Operating condition; Photocatalytic reduction; Structural advantage; Copper compounds |
顯示於: | 化學系 |
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