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Carbon-doped ZnO submicron spheres functionalized with carboxylate groups and effect of dispersion stability in the colloidal system for high photocatalytic activity

Title
Carbon-doped ZnO submicron spheres functionalized with carboxylate groups and effect of dispersion stability in the colloidal system for high photocatalytic activity
Author
서경도
Keywords
VISIBLE-LIGHT PHOTOCATALYSIS; NANOSTRUCTURES; NANOPARTICLES; FABRICATION
Issue Date
2015-12
Publisher
ROYAL SOC CHEMISTRY
Citation
RSC ADVANCES, v. 5, NO 126, Page. 104556-104562
Abstract
In this work, we propose a facile fabrication method for C-doped zinc oxide (ZnO) submicron spheres using ionizable surface groups without an additional surface modification process after heat treatment. The synthetic method is comprised of diffusion of zinc precursors into pH-responsive polymer microspheres and a subsequent heat treatment step. After heat treatment at a certain temperature, the ionizable functional groups remaining on the surface of the C-doped ZnO submicron spheres resulted in improved dispersion stability of the spheres in the fluid colloidal system. Using the photocatalytic activity test, the relationship between dispersion stability and the photocatalytic property of the C-doped ZnO submicron spheres was investigated. As a result, the content of carbon atoms and the surface functional groups depended on the pH of the reaction medium.
URI
http://pubs.rsc.org/en/Content/ArticleLanding/2015/RA/C5RA21265K#!divAbstracthttp://hdl.handle.net/20.500.11754/29591
ISSN
2046-2069
DOI
10.1039/c5ra21265k
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > CHEMICAL ENGINEERING(화학공학과) > Articles
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