Oxygen-Vacancies-Induced Enhancement in Photocatalystic Performance of Sea Urchin-Like Fe3O4@ZnO Hollow Core-Shell Structures

被引：2

作者：

Yang, Shuo ^{[1
]}

Pan, Mengqu ^{[2
]}

Chen, Jiayou ^{[1
]}

Wang, Lili ^{[1
]}

Guo, Chenzi ^{[3
]}

Han, Donglai ^{[4
]}

Yang, Lili ^{[2
]}

机构：

[1] Changchun Univ, Coll Sci, Changchun 130022, Peoples R China

[2] Jilin Normal Univ, Coll Phys, Siping 136000, Peoples R China

[3] Chinese Acad Sci, Changchun Inst Opt Fine Mech & Phys, Changchun 130033, Peoples R China

[4] Changchun Univ Sci & Technol, Sch Mat Sci & Engn, Changchun 130022, Peoples R China

来源：

PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE | 2021年 / 218卷 / 21期

关键词：

hollow core-shell heterostructures; magnetic responses; photocatalysis; recyclability; ZNO NANOSTRUCTURES; PHOTOLUMINESCENCE; OXIDE; NANOPARTICLES; NANOCRYSTALS; FE3O4; DEGRADATION; INHIBITION; MORPHOLOGY; GRAPHENE;

D O I：

10.1002/pssa.202100421

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A novel sea urchin-like Fe3O4@ZnO (S-FZ) hollow core-shell photocatalyst is developed, which achieves about fourfold higher photocatalystic degradation efficiency (84.4%) than the waxberry-type Fe3O4@ZnO (W-FZ) photocatalyst due to its larger specific surface area. After postannealing at different temperatures under argon atmosphere, the photocatalystic degradation efficiency of S-FZ is effectively improved. When the annealing temperature is 500 degrees C, the degradation efficiency of S-FZ hollow core-shell structures is further improved to 99%, which is related to the synergistic effect of high density of oxygen vacancies. Such S-FZ catalysts are easily separated with a magnet and reused with only 2% loss in photocatalystic degradation efficiency after five circles. Herein, a practical approach toward high-efficient and recyclable photocatalysts is provided.

引用

页数：10

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