构建GO/Pr/PbO₂三元电极,用于高效降解有机污染物

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Yuanfeng Wu¹, Yue Yin¹, Xiaoxiao Su¹

¹Henan Key Laboratory of Coal Green Conversion, International Jiont Laboratory of Coal Clean Utilization, Collaborative Innovation Center of Coal Work Safety and Clean High Efficiency Utilization, and College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo, 454003, China.

|November 24, 2024

概括

这项研究开发了一种新的GO/Pr/PbO2电极,用于高效的甲蓝 (MB) 的电催化降解. 三元电极表现出卓越的性能,在最佳条件下实现了94.64%的MB去除.

科学领域:

材料科学材料科学材料科学
环境化学环境化学
电化学电化学电化学

背景情况:

染料和药品造成的废水污染是一个重大的环境问题.
开发有效和具有成本效益的污染物降解方法至关重要.

研究的目的:

为了合成和描述一种新的石墨烯氧化物//二氧化 (GO/Pr/PbO2) 电极.
评估GO/Pr/PbO2电极的电催化性能,用于降解甲蓝 (MB) 和其他有机污染物.
为了阐明降解机制和途径.

主要方法:

用于制备电极的电化学沉积.
进行X射线衍射 (XRD),扫描电子显微镜 (SEM) 和X射线光电子光谱 (XPS) 进行表征.
在电解电池中进行电催化降解实验.
自由基捕获实验和密度函数理论 (DFT) 计算用于机制研究.

主要成果:

与PbO2和Pr/PbO2电极相比,GO/Pr/PbO2三元电极表现出增强的电催化活性,表明了协同效应.
在优化条件下,MB降解了94.64%.
电极对其他污染物如罗达胺B,甲基色,酸红色和四环素 (降解≥60%) 显示出有效性.
基基 (•OH) 被确定为关键的活性氧物种.

结论:

GO/Pr/PbO2电极是有效电催化降解有机污染物的有希望的材料.
GO,Pr和PbO2之间的协同效应有助于提高催化性能.
DFT计算表明,污染物通过C-O-Pr和Pr-O-Pb键在双接口上的电子转移.

关键词:

在 DFT 方面,它是最重要的.电催化降解的电催化降解在GO/Pr/PbO中有机污染物有机污染物三极电极是指三极电极.

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