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  • 09월 08일 17시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제116회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Improvement in Photocatalytic Activity and Thermal Stability of WOx-Impregnated Disordered Nanoporous TiO2

등록일
2015년 8월 27일 16시 16분 28초
접수번호
0987
발표코드
MAT.P-447 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
10월 16일 (금요일) 13:00~14:30
발표형식
포스터
발표분야
재료화학
저자 및
공동저자
박수빈, LIZHENGHUA1, 이현아, 김지만*
성균관대학교 화학과, Korea
1성균관대학교 화학과, Korea
Titanium dioxide (TiO2) has received a great attention in photocatalysis because of its high bandgap energy, non-toxicity, low-cost. Especially, nanoporous TiO2 exhibits high activities and performances in photocatalysis fields due to its high surface area with large pore volumes. There are two kinds of nanoporous TiO2, which are ordered and disordered nanoporous TiO2. Disordered nanoporous TiO2 is easier to prepare via in-situ hydrolysis of titanium glycolate spheres without employing any hard-templates than synthesizing ordered nanoporous TiO2. In order to obtain high crystallinity of TiO2 for high photocatalytic activitiy, post thermal treatment is necessary. In the previous research, however, it was observed that post thermal treatment led nanoporosity in disordered nanoporous TiO2 collapsed by agglomerating TiO2 primary particles. In this research, we investigated nano-propping effect of impregnated WOx in the pores for hindering grain agglomerations. Impregnated WOx obstructed TiO2 grains from agglomeration, and improve the pore structure stability at high thermal treatment temperatures. Therefore, disordered nanoporous TiO2 cooperated with WOx showed large surface area and high crystallinity with large grains. It enhanced the photocatalytic activities of disordered nanoporous TiO2.

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