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通过强大的TiO₂基纳米颗粒以可见光驱动的过氧单硫酸盐激活,以有效地去除硫甲醇

Jianghong Li¹, Xueding Jiang², Haishan Guan²

¹School of Transportation and Civil Engineering, Foshan University, Foshan, 528000, China.

Environmental pollution (Barking, Essex : 1987)

|July 10, 2023

概括

一种新的双金属--二氧化 (Co-Mo-TiO2) 纳米材料有效地使用可见光和过氧化硫酸盐 (PMS) 清除硫甲 (SMX). 这种先进的催化剂显示出用于净化水的高活性和稳定性.

科学领域:

材料科学材料科学材料科学
环境化学环境化学
催化剂是一种催化剂.

背景情况:

新出现的污染物如硫甲醇 (SMX) 对水生生态系统构成风险.
可见光驱动的光催化剂为污染物降解提供了一种可持续的方法.
氧硫酸盐 (PMS) 激活是一种有前途的先进氧化过程,用于去除污染物.

研究的目的:

为了合成和描述一种新的双金属Co-Mo-TiO2纳米材料.
研究Co-Mo-TiO2在可见光下的SMX降解中激活PMS的效率.
阐明降解机制并评估催化剂的稳定性和适用性.

主要方法:

通过两步合成制造Co-Mo-TiO2纳米材料.
使用可见光,Co-Mo-TiO2和PMS进行光催化降解实验.
动力分析,激素灭研究,电子自旋共振 (ESR) 光谱和密度函数理论 (DFT) 计算.

主要成果:

使用Vis/Co-Mo-TiO2/PMS. 在30分钟内实现了近100%的SMX去除.
运动速率常数是Vis/TiO2/PMS系统的24.8倍.
单片氧 (1O2) 和硫酸盐基 (SO4•−) 被确定为主要的活性物种,由Co和Mo氧化回氧循环促进.

结论:

该Vis/Co-Mo-TiO2/PMS系统表现出高效率,广泛的pH适用性和优异的稳定性,用于SMX去除.
DFT计算证实了催化剂对PMS吸附的亲和力,促进了降解.
该研究提出了SMX降解途径,并评估了副产品的毒性,突出了该系统在水处理方面的潜力.

关键词:

双金属的双金属的预孕前综合症的激活方式硫甲佐 (sulfamethoxazole) 是一种硫甲佐 (sulfamethoxazole) 的一种化合物.有协同效应的效应.TiO(2) 的使用情况.

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