文献类型：期刊文献

英文题名：Photo-induced self-catalysis of nano-Bi2MoO6 for solar energy harvesting and charge storage

作者：Si, Jiangju[1,2];Guo, Changmeng[1];Liu, Haojie[1];Li, Weiwei[1,2];Guo, Xiaowei[1,2];Bai, Peidong[1];Liu, Yanghong[1];Chen, Gairong[1,2];Sun, Ningbo[1,2]

第一作者：Si, Jiangju

通讯作者：Chen, GR[1];Sun, NB[1];Chen, GR[2];Sun, NB[2]

机构：[1]Xinxiang Univ, Sch Chem & Mat Engn, Xinxiang 453003, Henan, Peoples R China;[2]Henan Photoelectrocatalyt Mat & Micronano Applica, Xinxiang 453003, Henan, Peoples R China

第一机构：新乡学院

通讯机构：[1]corresponding author), Xinxiang Univ, Sch Chem & Mat Engn, Xinxiang 453003, Henan, Peoples R China;[2]corresponding author), Henan Photoelectrocatalyt Mat & Micronano Applica, Xinxiang 453003, Henan, Peoples R China.|[11071]新乡学院;

年份：2020

卷号：10

期号：62

起止页码：38033-38037

外文期刊名：RSC ADVANCES

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000583523300053)】；

基金：This work was financially supported by grants from the National Natural Science Foundation of China (No. 51901200, U1904189, 51801171), Key Scientific Research Project Plans of Higher Education Institutions in Henan Province (No. 20B430015), and the Regional Joint Fund of Basic and Applied Basic Research of Guangdong Province (No. 2019A1515110725).

语种：英文

外文关键词：Bismuth compounds - Catalysis - Electrolytes - Energy gap - Energy harvesting - Irradiation - Light - Molybdenum compounds - Photovoltaic effects - Redox reactions - Storage (materials)

摘要：Efficient, sustainable, and integrated energy systems require the development of novel multifunctional materials to simultaneously achieve solar energy harvesting and charge storage. Bi-based oxysalt aurivillius phase materials are potential candidates due to their typical photovoltaic effect and their pseudo-capacitance charge storage behavior. Herein, we synthesized nano-Bi2MoO6 as a material for both solar energy harvesting and charge storage due to its suitable band gap for absorption of visible light and its well-defined faradaic redox reaction from Bi metal to Bi3+. The irradiation of visible light significantly affected the electrochemical processes and the dynamics of the Bi2MoO6 electrode. The photo-induced self-catalytic redox mechanism was carefully explored by adding sacrificial agents in photocatalysis reaction. In accordance with the rule of energy matching, the photo-generated holes oxidized the Bi metal to Bi3+, and the corresponding peak current increased by 79.5% at a scanning rate of 50 mV s(-1). More importantly, the peak current retention rate remained higher than 92.5% during the entire 200 cycles. The photo-generated electrons facilitated a decrease of 184 mV in the overpotential of the reduction process. Furthermore, the irradiation of visible light also accelerated the ionic diffusion of the electrolyte. These investigations provide a unique perspective for the design and development of new multifunctional materials to synergistically realize solar energy harvesting and charge storage.