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自极化的schorl优化TiO₂用于光催化硫酸盐激活和有机污染物降解

Yu Tu¹, Sijia Sun², Hao Ding¹

¹Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Xueyuan Road, Haidian District, Beijing 100083, PR China.

Journal of hazardous materials

|July 24, 2023

概括

支持Schorl的纳米TiO2复合物有效地激活单硫酸盐 (PMS) 用于净化水. 这种先进的氧化过程显著降解了,提供了更好的性能和催化剂回收.

科学领域:

环境科学环境科学
材料科学材料科学材料科学
化学化学化学

背景情况:

聚硫酸盐的光催化激活显示出对绿色水净化有希望.
挑战包括低激活效率和难以恢复光催化剂.

研究的目的:

开发支持schorl的纳米TiO2复合光催化剂 (S/TiO2) 进行高效的单硫酸盐 (PMS) 激活.
调查水处理S/TiO2-PMS系统的降解性能和机制.

主要方法:

机械研磨方法用于制备S/TiO2复合光催化剂.
装载解剖酶TiO2纳米粒子 (大约. 30纳米) 通过Si-O-Ti键向Schorl表面.
在S/TiO2-PMS系统中,在模拟的阳光照射下评估醇降解效率.

主要成果:

S/TiO2-PMS表现出了显著的降解性能和稳定性以去除 (93.0%在30分钟内,100%在90分钟内).
与TiO2-PMS相比,S/TiO2-PMS的醇降解率是S/TiO2-PMS的12.6倍.
已识别的氧化物种是孔和硫酸盐基 (SO4•−).

结论:

尔的极化电场增强了光诱导的电荷分离,改善了S/TiO2-PMS的性能.
表面的铁氧化还原转换进一步促进了PMS的激活.
这项研究提供了一种基于TiO2的新型光催化硫酸盐激活系统,用于先进的氧化水处理.

关键词:

复合光催化剂是一种复合光催化剂.纳米-TiO (((2)) 是一种在PMS中使用PMS.斯科尔尔 (Schorl) 的意思是

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