Chemical Physics ( IF 2.0 ) Pub Date : 2020-11-21 , DOI: 10.1016/j.chemphys.2020.111053 Yongqin Liu , Yunlan Xu , Dengjie Zhong , Nianbing Zhong
In order to improve the light utilization and electron transfer efficiency of the PFC system, an efficient BiVO4/UiO-66/TiO2/Ti photoanode with visible-light response was prepared by a simple sol-gel method and a hydrothermal synthesis method. The photocurrent density of the BiVO4/UiO-66/TiO2/Ti was 0.72 mA/cm2 at 0.6 V (vs. SCE) under visible light, which was 2.36 times that of BiVO4/TiO2/Ti photoanode, indicating UiO-66 used as the electron transmission medium between TiO2 and BiVO4 could enhance the electron transmission efficiency. With BiVO4/UiO-66/TiO2/Ti photoanode and Cu2O/Cu cathode, the visible-light responsive photocatalytic fuel cell (PFC) exhibited high organics degradation and electricity conversion performance. The short circuit photocurrent density (Jsc), maximum power output and degradation efficiency of Rhodamine B were 0.26 mA·cm-2, 29.23 μW·cm-2 and 91.50% in 2 h, respectively.
中文翻译:
BiVO 4 / UiO-66 / TiO 2 / Ti光阳极可见光光催化燃料电池可有效降解若丹明B并稳定发电
为了提高PFC系统的光利用率和电子传递效率,采用简单的溶胶-凝胶法和水热合成法制备了具有可见光响应的BiVO 4 / UiO-66 / TiO 2 / Ti光阳极。BiVO 4 / UiO-66 / TiO 2 / Ti在可见光下于0.6 V(vs. SCE)下的光电流密度为0.72 mA / cm 2,是BiVO 4 / TiO 2 / Ti光阳极的2.36倍,表明TiO 2与BiVO 4之间的电子传输介质UiO-66可以提高电子传输效率。使用BiVO 4/ UiO-66 / TiO 2 / Ti光电阳极和Cu 2 O / Cu阴极,可见光响应型光催化燃料电池(PFC)表现出较高的有机物降解和电转换性能。若丹明B的短路光电流密度(Jsc),最大功率输出和降解效率分别0.26毫安·厘米-2,29.23μW·厘米-2和在2小时内,分别91.50%。