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계면활성제를 이용하여 anatase TiO2 나노 입자와 결합된rutile TiO2 분말의 광촉매 특성

Title
계면활성제를 이용하여 anatase TiO2 나노 입자와 결합된rutile TiO2 분말의 광촉매 특성
Other Titles
Photocatalytic activity of rutile TiO2 powders coupled with anatase TiO2 nanoparticles using surfactant
Author
김영도
Keywords
Photocatalyst; Titanium dioxide; coupling effect; surfactant; Photocatalytic activity
Issue Date
2018-06
Publisher
한국분말야금학회
Citation
한국분말야금학회지, v. 25, no. 3, page. 257-262
Abstract
The coupling of two semiconducting materials is an efficient method to improve photocatalytic activity via the suppression of recombination of electron-hole pairs. In particular, the coupling between two different phases of TiO2, i.e., anatase and rutile, is particularly attractive for photocatalytic activity improvement of rutile TiO2 because these coupled TiO2 powders can retain the benefits of TiO2, one of the best photocatalysts. In this study, anatase TiO2 nanoparticles are synthesized and coupled on the surface of rutile TiO2 powders using a microemulsion method and heat treatment. Triton X-100, as a surfactant, is used to suppress the aggregation of anatase TiO2 nanoparticles and disperse anatase TiO2 nanoparticles uniformly on the surface of rutile TiO2 powders. Rutile TiO2 powders coupled with anatase TiO2 nanoparticles are successfully prepared. Additionally, we compare the photocatalytic activity of these rutile-anatase coupled TiO2 powders under ultraviolet (UV) light and demonstrate that the reason for the improvement of photocatalytic activity is microstructural.
URI
http://ejournal.kpmi.or.kr/journal/article.php?code=61895https://repository.hanyang.ac.kr/handle/20.500.11754/119035
ISSN
1225-7591; 2287-8173
DOI
10.4150/KPMI.2018.25.3.257
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > MATERIALS SCIENCE AND ENGINEERING(신소재공학부) > Articles
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계면활성제를 이용하여 anatase TiO2 나노 입자와 결합된rutile TiO2 분말의 광촉매 특성.pdfDownload
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