Evaluation of visible photocatalytic performance of microwave hydrothermal synthesis of MnO2/TiO2 core-shell structures and gaseous mercury removal

被引：17

作者：

Xie, Cheng ^{[1
,4
]}

Xu, Lei ^{[1
,4
]}

Xia, Yi ^{[2
,3
]}

Gang, Ruiqi ^{[1
,4
]}

Ye, Qianjun ^{[1
,4
]}

Koppala, Sivasankar ^{[1
,4
,5
]}

机构：

[1] Kunming Univ Sci & Technol, Fac Met & Energy Engn, Natl Local Joint Lab Engn Applicat Microwave Ener, Kunming 650093, Yunnan, Peoples R China

[2] Kunming Univ Sci & Technol, Res Ctr Anal & Measurement, Kunming 650093, Yunnan, Peoples R China

[3] Analyt & Testing Res Ctr Yunnan, Kunming 650093, Yunnan, Peoples R China

[4] Minist Educ, Key Lab Unconvent Met, Kunming 650093, Yunnan, Peoples R China

[5] Saveetha Inst Med & Tech Sci SIMATS, Saveetha Sch Engn, Chennai 602105, Tamil Nadu, India

来源：

MICROPOROUS AND MESOPOROUS MATERIALS | 2022年 / 334卷

基金：

国家重点研发计划; 中国国家自然科学基金;

关键词：

Core-shell structure; TiO2; MnO2; RhB degradation; Hg-0; removal; TIO2; HETEROJUNCTION; HETEROSTRUCTURE; NANOCOMPOSITE; CONSTRUCTION; FABRICATION; HYBRIDS;

D O I：

10.1016/j.micromeso.2022.111788

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

MnO2/TiO2 core-shell structure photocatalyst was prepared by a two-step microwave method. Under visible light irradiation, this core-shell photocatalyst exhibited enhanced catalytic activity for the degradation of organic dye Rhodamine B and the oxidative removal of gaseous heavy metal He . The MnO2 shell not only enhanced the visible light absorption of TiO2, but also increased its specific surface area to 227.94 m(2) g(-1). In addition, the formation of core-shell heterojunction promotes the migration of carriers and the separation of photo-generated electron-hole pairs, and improves the stability of the composite, thus enabling it to exhibit enhanced photocatalytic performance.

引用

页数：10

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