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在Ag₂O/TiO₂异构光催化剂中的循环性能起源

Yuang Chen¹, Lina Lin¹, Wangqiong Xu¹

¹Key Laboratory of Polar Materials and Devices (MOE) and Department of Electronics, East China Normal University, Shanghai 200062, China.

Langmuir : the ACS journal of surfaces and colloids

|October 16, 2023

概括

这项研究引入了一种Ag2O/TiO2光催化剂,用于甲蓝的降解. 材料材料的材料.

科学领域:

材料科学材料科学材料科学
环境化学环境化学
光催化作用的光催化

背景情况:

光催化研究往往优先考虑效率而不是循环性能.
光催化剂的工业应用需要稳定,长期运行.

研究的目的:

准备一个Ag2O/TiO2异构光催化剂,用于连续的甲蓝光降解.
研究微观结构的演变及其对循环性能的影响.

主要方法:

Ag2O/TiO2异构光催化剂的合成.
在可见光下,甲蓝 (MB) 的持续光降解.
用于微观结构分析的光催化剂样本 (第1轮和第5轮) 的回收.

主要成果:

光催化性能在第一周期后得到改善,之后保持稳定.
在由于电荷转移的反应中,Ag2O/TiO2转化为Ag2O@Ag-TiO2- .
微观结构的变化增强了局部的表面等离子体共振,增加了载体生成和寿命.

结论:

Ag2O/TiO2异构表现出MB光降解的增强和稳定的循环性能.
表面电荷转移和氧化还原反应驱动微观结构和光电性质的演变,这对于循环稳定至关重要.
该研究强调了微结构进化的重要性,以实现强大的光催化系统.

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