吉林大学学报(理学版) ›› 2023, Vol. 61 ›› Issue (3): 695-701.

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Ti/CoWO4光阳极的制备及其光电催化性能

吴宇佳, 张俭, 张新欣, 王国文, 孙德栋, 马红超   

  1. 大连工业大学 轻工与化学工程学院, 辽宁 大连 116034
  • 收稿日期:2022-11-02 出版日期:2023-05-26 发布日期:2023-05-26
  • 通讯作者: 马红超 E-mail:250269805@qq.com

Preparation and Photocatalytic Performance of Ti/CoWO4 Photoanode

WU Yujia,  ZHANG Jian,  ZHANG Xinxin,  WANG Guowen,  SUN Dedong,  MA Hongchao   

  1. School of Light Industry and Chemical Engineering,  Dalian Polytechnic University, Dalian 116034,  Liaoning Province, China
  • Received:2022-11-02 Online:2023-05-26 Published:2023-05-26

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/CoWO4光阳极, 通过改变水热反应时间可调节附着在基底表面的CoWO4纳米球的数量, 其中Ti/CoWO4-6 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/CoWO4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/CoWO4-6 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%. 

关键词: 钛片, 钨酸钴, 光电催化, 活性艳蓝

Abstract:  A Ti/CoWO4 photoanode with excellent semiconductor properties was prepared on a titanium substrate by using a one-step hydrothermal method. The number of CoWO4 nanospheres attached to the substrate surface could be easily adjusted by changing the hydrothermal time,  where Ti/CoWO4-6 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/CoWO4 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/CoWO4-6 h  can reach 84.97%,  and the degradation rate can still reach 74.91% after 5 cycles.

Key words: titanium sheet,  , cobalt tungstate,  , photoelectric catalysis,  , reactive brilliant blue

中图分类号: 

  • O646