Ti-NiCo_(2)S_(4)光电阳极的制备与性能分析  

Preparation and performance analysis of Ti-NiCo_(2)S_(4)photoelectric anodes

作　　者：王晨杰 张俭 张新欣 马春 马红超 WANG Chenjie;ZHANG Jian;ZHANG Xinxin;MA Chun;MA Hongchao(School of Light Industry and Chemical Engineering,Dalian Polytechnic University,Dalian 116034,China)

机构地区：[1]大连工业大学轻工与化学工程学院,辽宁大连116034

出　　处：《大连工业大学学报》2024年第6期419-423,共5页Journal of Dalian Polytechnic University

基　　金：国家自然科学基金项目(21875026).

摘　　要：通过控制硫化过程合成具有可调硫化程度的尖晶石结构镍钴硫化物纳米材料电极,对研究电极的晶体结构、形貌和光电催化性能特性表征分析,验证硫化对纳米材料光电催化性能的影响。以活性艳蓝作为目标污染物,评价所制电极的光电催化活性。水热硫化形成的NiCo_(2)S_(4)-0.10电极具有高析氧电势、快速载流子转移、低电阻和高光响应电流,这些特性使得NiCo_(2)S_(4)-0.10电极在2h内对60mg/L活性艳蓝的光电催化降解率达到91.61%(电流密度90mA/cm^(2))。降解实验基于主要活性物质羟基自由基、光生空穴和超氧自由基的共同作用。研究结果对复合金属硫化物光电催化阳极的设计和优化具有重要意义。Spinel-structured nickel-cobalt sulfide nanomaterial electrodes with adjustable sulfidation degree were synthesized through a controlled sulfidation process.The crystal structure,morphology and photocatalytic performance of the as-prepared electrodes were characterized and analyzed to verify the effect of sulfidation on the photocatalytic performance of the nanomaterials.The photocatalytic activity of the fabricated electrodes was evaluated using reactive brilliant blue as the target pollutant.The NiCo_(2)S_(4)-0.10 electrode prepared by hydrothermal sulfidation has high oxygen evolution potential,fast carrier transfer,low resistance and high photoresponse current,which enable the photocatalytic degradation efficiency of reactive brilliant blue of 60 mg/L to reach 91.61%(at current density of 90 mA/cm^(2))within 2 h.The degradation experiments are based on the main active substances including hydroxyl radicals,photogenerated holes and superoxide radicals.These results have important implication for the design and optimization of photocatalytic anodes of composite metal sulfides.

关 键 词：光电催化 协同效应 镍钴硫化物 活性艳蓝 

分 类 号：X703[环境科学与工程—环境工程]