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Walnut-like ZnO@Zn2TiO4 multicore-shell submicron spheres with a thin carbon layer: Fine synthesis, facile structural control and solar light photocatalytic application

Title
Walnut-like ZnO@Zn2TiO4 multicore-shell submicron spheres with a thin carbon layer: Fine synthesis, facile structural control and solar light photocatalytic application
Author
강용수
Keywords
Polymer; Hierarchical structure; Multicore-shell; Photocatalysis; Bandgap narrowing
Issue Date
2017-01
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Citation
ACTA MATERIALIA, v. 122, page. 287-297
Abstract
In this study, we "propose a fine fabrication method of walnut-like ZnO@Zn2TiO4 multicore-shell sub micron spheres for the solar light-responsive photocatalysis. Poly(methacrylic acid/ethylene glycol dimethacrylate) [poly(MAA/EGDMA)] microspheres were used as sacrificial template to create the hierarchically-structured hybrid metal oxide spheres with a thin carbon layer. Heterogeneous multicore-shell structure like a walnut depends on the monomer ratio of poly(MAA/EGDMA) microspheres. The thin carbon layer formed on the surface of ZnO nano-grains can cause visible light response and effectively impede the recombination of photo-generated" electron-hole. When the walnut-like ZnO Zn2TiO4 multicore-shell submicron spheres with a thin carbon layer are tested as photocatalysts under solar light, the photodegradation of organic dye of above 93% is exhibited for 1 h due to the multiple light scattering originated from the unique structure and a coexistence of ZnO and Zn2TIO4. (C) 2016 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
URI
https://www.sciencedirect.com/science/article/abs/pii/S1359645416307303?via%3Dihubhttp://repository.hanyang.ac.kr/handle/20.500.11754/112350
ISSN
1359-6454; 1873-2453
DOI
10.1016/j.actamat.2016.09.031
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ENERGY ENGINEERING(에너지공학과) > Articles
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