ZnFe2O4/N-C催化剂的制备及其电解水催化性能  

Preparation of ZnFe2O4/N-C catalyst and its catalytic performance of electrolyzed water

作　　者：刘卫涛 张桂伟 高盟锦 陈雨蒙 韩敬莉 李亚坤 平丹 LIU Weitao;ZHANG Guiwei;GAO Mengjin;CHEN Yumeng;HAN Jingli;LI Yakun;PING Dan(College of Material and Chemical Engineering,Zhengzhou University of Light Industry,Zhengzhou 450001,China)

机构地区：[1]郑州轻工业大学材料与化学工程学院,河南郑州450001

出　　处：《轻工学报》2020年第3期37-43,共7页Journal of Light Industry

基　　金：国家自然科学基金项目(21808213);郑州轻工业大学校科研基金项目(13306000028);郑州轻工业大学博士基金项目(2018BSJJ024,2018BSJJ025)。

摘　　要：以聚苯胺(PANI)为基体和碳源、ZnCl2和FeCl3为金属源,采用水热法在PANI表面原位合成ZnFe2O4尖晶石型化合物,经高温碳化后制备Zn Fe2O4/N-C催化剂,对其结构和形貌进行表征、分析,并考察碳化温度对所得催化剂结构和性能的影响.结果表明:催化剂ZnFe2O4/N-C中的N-C主要以无定型碳的形式存在,ZnFe2O4颗粒高度分散在N-C表面,且随着碳化温度的升高,ZnFe2O4的结晶性逐渐增强;ZnFe2O4的引入有助于催化剂ZnFe2O4/N-C石墨化程度的提高,当n(Fe)∶n(Zn)=2∶1,金属离子总浓度为0. 1 mol/L,碳化温度为800℃时,所得催化剂ZnFe2O4/N-C-800的D峰与G峰比ID/IG值为0. 97,低于N-C的ID/IG值(1. 12),且对电解水析氢反应和析氧反应均有良好的催化性能.Using polyaniline(PANI)as the matrix and carbon source,ZnCl2 and FeCl3 as the metal sources,ZnFe2O4 spinel compounds were synthesized in situ on the surface of PANI by hydrothermal method.The ZnFe2O4/N-C catalyst was prepared after carbonization at high temperature,its structure and morphology were characterized and analyzed,and the effect of carbonization temperature on the structure and performance of the catalyst was investigated.The results showed that the N-C in the catalyst ZnFe2O4/N-C mainly existed in the form of amorphous carbon.The ZnFe2O4 particles were highly dispersed on the N-C surface,and with the increase of the carbonization temperature,the crystallinity of ZnFe2O4 gradually increased;the introduction of ZnFe2O4 was beneficial to the catalyst ZnFe2O4/N-C graphitization degree,when n(Fe) GA6FA n(Zn)=2 GA6FA 1,the total concentration of metal ions was 0.1 mol/L,and the carbonization temperature was 800℃,the ID/IG(the peak D-to-G peak ratio)value of the obtained catalyst ZnFe2O4/N-C-800 was 0.97,which was lower than the ID/IG value of N-C(1.12),and it had good catalytic performance for both hydrogen evolution and oxygen evolution reactions of electrolyzed water.

关 键 词：聚苯胺 ZNFE2O4 电解水 析氢反应 析氧反应 

分 类 号：O645[理学—物理化学]