SnFe_(2)O_(4)/ZnIn_(2)S_(4)/PVDF piezophotocatalyst with improved photocatalytic hydrogen production by synergetic effects of heterojunction and piezoelectricity

作     者：Ping Su Dezhi Kong Huaihao Zhao Shangkun Li Dafeng Zhang Xipeng Pu Changhua Su Peiqing Cai 

作者机构：School of Materials Science and EngineeringShandong Key Laboratory of Chemical Energy Storage and New Battery TechnologyLiaocheng UniversityLiaocheng 252000China College of Optical and Electronic TechnologyChina Jiliang UniversityHangzhou 310018China 

出 版 物：《Journal of Advanced Ceramics》 (先进陶瓷（英文）)

年 卷 期：2023年第12卷第9期

页      面：1685-1700页

核心收录：

学科分类：0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 

基　　金：supported by Shandong Provincial Natural Science Foundation,China(Nos.ZR2021ME046 and ZR2022ME179) Liaocheng University College Students Innovation and Entrepreneurship Training Program(No.2020205926) 

主　　题：heterojunction piezophotocatalysis SnFe_(2)O_(4)(SFO) ZnIn_(2)S_(4)(ZIS) polyvinylidene fluoride((CH_(2)CF_(2))_(n),PVDF)film 

摘      要：The polarized electric field inside piezoelectric materials has been proven to be a promising technique to boost photogenerated charge ***,a novel flexible SnFe_(2)O_(4)/ZnIn_(2)S_(4)/polyvinylidene fluoride((CH2CF2)_(n),PVDF)(P-SZ)film piezophotocatalyst was successfully synthesized by combining PVDF,an organic piezoelectric material,with a SnFe_(2)O_(4)/ZnIn_(2)S_(4)(SFO/ZIS)type II heterojunction *** hydrogen evolution rate of SFO/ZIS heterojunction with a SFO content of 5%is about 846.79μmol·h^(−1)·g^(−1),which is 3.6 times that of pristine ***,after being combined with PVDF,the optimum hydrogen evolution rate of P-SZ is about 1652.7μmol·h^(−1)·g^(−1)in the presence of ultrasound,which exceeds that of 5%SFO/ZIS by an approximate factor of *** on experimental results,the mechanism of the improved photocatalytic performance of P-SZ was proposed on the basis of the piezoelectric field in PVDF and the formed heterojunction between SFO and ZIS,which effectively boosted the separation of photoinduced *** work provides an efficient strategy for multi-path collection and utilization of natural solar and vibrational energy to enhance photoactivity.