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Enhanced Photoelectrochemical Characteristics of TiO2 Nanotubes via Plasma Treatment

Title
Enhanced Photoelectrochemical Characteristics of TiO2 Nanotubes via Plasma Treatment
Other Titles
플라즈마 처리를 통한 산화 티타늄 나노튜브 광촉매의 전기화학적 특성
Author
Moon Seong I
Alternative Author(s)
문성이
Advisor(s)
송태섭
Issue Date
2019-02
Publisher
한양대학교
Degree
Master
Abstract
ABSTRACT Enhanced Photoelectrochemical Characteristics of TiO2 Nanotubes via Plasma Treatment Over the years, titanium oxide (TiO2) has gained increasing attention as a promising material in the field of photoelectrochemical water splitting due to its high photocatalytic activity and electrical conductivity. Anatase phase of TiO2 exhibits great photocatalytic activity for hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) due to its wide bandgap, suitable band positions, and high carrier mobility. Moreover, photocatalytic activity of anatase TiO2 can be further improved by tuning surface properties such as electronic configuration or nanostructures. In this study, ion plasma process is applied as a surface engineering strategy for enhancing photocatalytic activities of TiO2 nanotubes. Plasma surface treatment can induce a number of nanopores on the surface of TiO2 nanotubes by physicochemical etching effects. In addition, partial amorphization can be achieved on the surface of TiO2 nanotubes by plasma surface treatment. The formal can enhance specific surface area of TiO2 nanotubes, while the later can enhance light absorption for visible light and charge separation. These two factors can synergistically boost photocatalytic activity of TiO2 nanotubes.
URI
http://dcollection.hanyang.ac.kr/common/orgView/000000108401http://repository.hanyang.ac.kr/handle/20.500.11754/99425
Appears in Collections:
GRADUATE SCHOOL[S](대학원) > ENERGY ENGINEERING(에너지공학과) > Theses (Master)
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