光降解
纳米复合材料
光催化
材料科学
亚甲蓝
光电流
化学工程
纳米-
煅烧
可见光谱
吸收(声学)
锐钛矿
光化学
纳米技术
化学
光电子学
复合材料
催化作用
有机化学
工程类
作者
Jingui Ma,Zijin Tian,Lei Li,Yuan Lu,Xiaoling Xu,Junwei Hou
出处
期刊:Catalysts
[MDPI AG]
日期:2022-03-30
卷期号:12 (4): 383-383
被引量:5
标识
DOI:10.3390/catal12040383
摘要
In order to improve the photocatalytic activity of TiO2, we successfully loaded nano-CuO on the TiO2 nanomeshes as CuO-TiO2 nanocomposites through a facile electrodeposition method. The optimized calcined temperature after Cu electrodeposition is confirmed as 450 °C, which could furthest assist the crystallization of anatase TiO2 and guarantee the high photocatalytic activity of CuO-TiO2 nanocomposites. Comparing with pure TiO2 nanomeshes, CuO-TiO2 nanocomposites showed better degradability of methylene blue, and the degradation efficiency reached to 35% after 120 min irradiation. Additionally, CuO-TiO2 nanocomposites exhibit much stronger absorption intensity within the visible light scope, more than two times than that of pure TiO2 nanomeshes, which indicates that the loading of nano-CuO could promote photocatalytic efficiency by the strong visible light absorption. Additionally, CuO-TiO2 nanocomposites show faster photocurrent response and lower charge transfer resistance than that of pure TiO2 nanomeshes, which implies that the recombination rate of photogenerated electron-hole pairs was reduced after nano-CuO loading.
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