钴酸盐
催化作用
钙钛矿(结构)
化学
掺杂剂
水溶液
无机化学
氧化还原
催化氧化
化学工程
材料科学
物理化学
有机化学
光电子学
兴奋剂
工程类
作者
Kai Wang,Han Chen,Fuping Li,Yu Liu,Zongping Shao,Lihong Liu,Shaobin Wang,Shaomin Liu
标识
DOI:10.1016/j.apcatb.2022.121990
摘要
A series of strontium cobaltite perovskite oxides with various dopants (SrCo0.95M0.05O3-δ, M=Fe, Sc, Co, Zn, Gd) are designed for catalytic peroxymonosulfate (PMS) activation to degrade aqueous organic pollutants and the correlations between their crystalline structure and surface properties to catalytic activity were comprehensively investigated. SrCo0.95M0.05O3-δ displays three crystalline structures depending on the dopant metals and exhibits different catalytic activities. Among the structures and properties, Co-O bond length significantly affects the lattice oxygen diffusivity and Co2+/Co3+ redox capacity, governing the overall PMS activation, and is suggested as a descriptor for PMS activation. This study provides new insight to the reaction pathways and the structure-activity correlation for new design of effective perovskite oxides for PMS-based oxidation process toward wastewater treatment and other catalytic processes.
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