乙炔黑/Fe_(3)O_(4)阴极制备及电Fenton氧化降解2,4,6-三氯苯酚  

Preparation of acetylene black/Fe_(3)O_(4)catalysed cathodic electrode and removal of 2,4,6-trichlorophenol by electro-Fenton oxidation

作　　者：何然 梁宏[1] 黄洪 羊宥郦 郑强 李琋 HE Ran;LIANG Hong;HUANG Hong;YANG Youli;ZHENG Qiang;LI Xi(College of Chemistry and Chemical Engineering,Southwest Petroleum University,Chengdu 610500,Sichuan,China)

机构地区：[1]西南石油大学化学化工学院,四川成都610500

出　　处：《化工进展》2025年第1期572-582,共11页Chemical Industry and Engineering Progress

基　　金：国家油气重大专项(2016ZX05040-003);四川省重大科技专项(2018SZDZX0020)。

摘　　要：以泡沫镍为载体,采用乙炔黑粉末和纳米Fe_(3)O_(4)为催化剂,通过涂抹/压实/煅烧方式制备一种能够实现原位产生H_(2)O_(2)并在Fe(Ⅱ)存在条件下活化H_(2)O_(2)生成羟基自由基(·OH)的阴极材料。通过X射线衍射(XRD)、扫描电子显微镜(SEM)对样品的晶格结构、形貌结构等进行表征;将制备所得阴极材料应用于电芬顿系统处理2,4,6-三氯苯酚模拟废水,探究乙炔黑/Fe_(3)O_(4)材料的电催化性能。结果表明,电芬顿体系中,Fe_(3)O_(4)/C为3∶7、电流强度50mA、初始pH为3的最佳实验条件下,电解120min时2,4,6-三氯苯酚的去除率为70.8%,且乙炔黑/Fe_(3)O_(4)电极有效拓宽了电芬顿系统的pH适用范围(3~11)。Fe_(3)O_(4)以多面体结构形式镶嵌在乙炔黑表面,为H_(2)O_(2)的原位产生和活化奠定了物质基础。A cathode material was prepared by coating,compaction and calcination using nickel foam as a carrier,acetylene black powder,and nano Fe_(3)O_(4)as a catalyst.This material is capable of achieving in-situ generation of H_(2)O_(2)and activation of H_(2)O_(2)to generate hydroxyl radicals(·OH)in the presence of Fe(Ⅱ).X-ray diffraction(XRD)and scanning electron microscopy(SEM)were used to characterise the lattice and morphological structures of the samples.The cathode materials prepared were applied to the electro-Fenton system to treat simulated wastewater containing 2,4,6-trichlorophenol,and the electrocatalytic performance of acetylene black/Fe_(3)O_(4)materials was investigated.Under the optimal experimental conditions of a Fe_(3)O_(4)/C ratio of 3∶7,a current intensity of 50mA and an initial pH of 3 in the electro-Fenton system,the removal rate of 2,4,6-trichlorophenol was 70.8%after 120min of electrolysis.The acetylene black/Fe_(3)O_(4)electrodes effectively broadened the pH range(3—11)of the electro-Fenton system.The polyhedral structure of Fe_(3)O_(4)was embedded in the surface of acetylene black,providing a material foundation for the in-situ generation and activation of H_(2)O_(2).

关 键 词：电化学 催化 自由基 四氧化三铁 乙炔黑 2 4 6-三氯苯酚 

分 类 号：X703.1[环境科学与工程—环境工程]