Heterogeneous Activation of Persulfate by LaMO3 (M=Co, Fe, Cu, Mn, Ni) Perovskite Catalysts for the Degradation of Organic Compounds

被引：22

作者：

Manos, Donatos ^{[1
]}

Papadopoulou, Foteini ^{[1
]}

Margellou, Antigoni ^{[1
]}

Petrakis, Dimitrios ^{[1
]}

Konstantinou, Ioannis ^{[1
,2
]}

机构：

[1] Univ Ioannina, Dept Chem, Ioannina 45100, Greece

[2] Univ Res Ctr Ioannina URCI, Inst Environm & Sustainable Dev, Ioannina 45110, Greece

来源：

CATALYSTS | 2022年 / 12卷 / 02期

关键词：

persulfate; perovskite; sulfate radicals; advanced oxidation; B-metal substitution; phenolics; ADVANCED OXIDATION; PEROXYMONOSULFATE ACTIVATION; PERFORMANCE; WATER; PEROXYDISULFATE; DICLOFENAC; MECHANISM; OZONATION; ATRAZINE; REMOVAL;

D O I：

10.3390/catal12020187

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Sulfate radical-based advanced oxidation processes (SR-AOPs) are lately applied for the degradation of various pollutants through the formation of reactive oxidant species (ROS) from activation of oxidants, such as persulfate (PS) or peroxymonosulfate (PMS). In this study, LaMO3 (M=Co, Fe, Cu, Mn, Ni) perovskite catalysts were synthesized, characterized by several techniques, and tested for the activation of persulfate towards the degradation of phenolic pollutants. The effect of substitution of position B of La-based perovskites as well as calcination temperature was studied. Overall, the results showed that the decisive role in the catalytic activity was the presence of structures that enhance the transfer of electrons between perovskite and oxidant. LaNiO3 followed by LaCoO3 were found as the most active catalysts. Finally, the stability of the catalysts was studied, showing that B-metal leaching is significant for both catalysts, with LaCoO3 being the most stable one.

引用

页数：15

共 65 条

[1] High surface area mesoporous nanocast LaMO3 (M = Mn, Fe) perovskites for efficient catalytic ozonation and an insight into probable catalytic mechanism [J].