文献类型：期刊文献

英文题名：Photo-induced self-catalysis of nano-Bi2MoO6for 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：Sun, Ningbo|[1107139071109]孙宁波;

机构：[1] School of Chemistry and Materials Engineering, Xinxiang University, Xinxiang Henan, 453003, China; [2] Henan Photoelectrocatalytic Material and Micro-Nano, Application Technology Academician Workstation, Xinxiang Henan, 453003, China

第一机构：新乡学院

通讯机构：[1]School of Chemistry and Materials Engineering, Xinxiang University, Xinxiang Henan, 453003, 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：EI(收录号：20204409436827);Scopus(收录号：2-s2.0-85094563362)

语种：英文

外文关键词：Layered semiconductors - Solar power generation - Electrolytes - Light - Molybdenum compounds - Photovoltaic effects - Redox reactions - Solar energy - Bismuth compounds - Storage (materials) - Energy gap - Energy harvesting - Energy storage

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. This journal is ? The Royal Society of Chemistry.