Ti/CoWO_(4)光阳极的制备及其光电催化性能  

Preparation and Photocatalytic Performance of Ti/CoWO_(4) Photoanode

作　　者：吴宇佳 张俭 张新欣 王国文 孙德栋 马红超 WU Yujia;ZHANG Jian;ZHANG Xinxin;WANG Guowen;SUN Dedong;MA Hongchao(School of Light Industry and Chemical Engineering,Dalian Polytechnic University,Dalian 116034,Liaoning Province,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：《吉林大学学报（理学版）》2023年第3期695-701,共7页Journal of Jilin University:Science Edition

基　　金：国家自然科学基金(批准号:21875026).

摘　　要：采用一步水热法在钛基底上制备一种具有优秀半导体特性的Ti/CoWO_(4)光阳极,通过改变水热反应时间可调节附着在基底表面的CoWO_(4)纳米球的数量,其中Ti/CoWO_(4)-6 h具有更大的活性面积、更高的电荷转移能力及更高的中间活性物种(自由基)生成效率.通过紫外可见(UV-Vis)光谱和扫描电子显微镜(SEM)等方式对材料进行表征,考察Ti/CoWO_(4)光阳极对活性艳蓝(KN-R)的光电催化(PEC)降解活性.结果表明,在PEC条件下,Ti/CoWO_(4)-6 h对KN-R(60 mg/L)脱色率可达84.97%,5次循环后降解率仍能达到74.91%.A Ti/CoWO_(4) photoanode with excellent semiconductor properties was prepared on a titanium substrate by using a one-step hydrothermal method.The number of CoWO_(4) nanospheres attached to the substrate surface could be easily adjusted by changing the hydrothermal time,where Ti/CoWO_(4)-6 h had a larger active area,higher charge transfer ability and higher intermediate active species(free radicals)generation efficiency.The materials were characterized by ultraviolet-visible spectroscopy(UV-Vis)and scanning electron microscopy(SEM)to investigate the photoelectrocatalytic(PEC)degradation activity of Ti/CoWO_(4) photoanodes on reactive brilliant blue(KN-R).The results show that under PEC conditions,the decolorization rate of KN-R(60 mg/L)by Ti/CoWO_(4)-6 h can reach 84.97%,and the degradation rate can still reach 74.91%after 5 cycles.

关 键 词：钛片 钨酸钴 光电催化 活性艳蓝 

分 类 号：O646[理学—物理化学]