서지주요정보
티타늄계 다공성 혼합산화물의 자외선과 가시광 하에서의 광촉매 특성 = Photocatalytic properties of porous titanium based mixed oxide under visible and UV light
서명 / 저자 티타늄계 다공성 혼합산화물의 자외선과 가시광 하에서의 광촉매 특성 = Photocatalytic properties of porous titanium based mixed oxide under visible and UV light / 박상균.
저자명 박상균 ; Park, Sang-Kyun
발행사항 [대전 : 한국과학기술원, 2003].
Online Access 원문보기 원문인쇄

소장정보

등록번호

8014063

소장위치/청구기호

학술문화관(문화관) 보존서고

MCBE 03014

휴대폰 전송

도서상태

이용가능

대출가능

반납예정일

초록정보

Slurry type photocatalytic reactor is efficient reactor in a reuse that it provides the highest radiation area per unit volume of a reactor. However, when nanosize powder such as Degussap P-26, is used seperation of the used powder is difficult. In this work, porous catalyst of micrometer size was prepared and the photoactivities of the as-prepared catalyst were compared with that of Degussa P25. For general use of photocatalysis the development of photocatalyst to have reactivity under natural light is important. $TiO_2$ has too large bandgap energy to utilize visible portion of the solar irradiation. Only 5 % of solar energy can activate $TiO_2$ photocatalyst. For this reason reduction of bandgap energy of $TiO_2$ is important work. In this study transient metal, Co was doped to reduce the bandgap energy of $TiO_2$. Micron-sized photocatalyst was prepared by spray pyrolysis. The spray pyrolysis is well known to reduce the phase seperation in multi-component materials. Co doping increased the photoactivity under visible light. To reduce the rutile formation at hight preparation temperature, $SiO_2$ was added to porous $TiO_2$. $SiO_2$/$TiO_2$ mixed oxide had higher photoactivity than the pure anatase $TiO_2$. Co-doped $SiO_2$/$TiO_2$ porous photocatalyst was also prepared by spray pyrolysis. That photocatalyst had higher photoactivity than the undoped catalyst.

서지기타정보

서지기타정보
청구기호 {MCBE 03014
형태사항 vi, 84 p. : 삽도 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Sang-Kyun Park
지도교수의 한글표기 : 박승빈
지도교수의 영문표기 : Seung-Bin Park
학위논문 학위논문(석사) - 한국과학기술원 : 생명화학공학과,
서지주기 참고문헌 : p. 79-84
주제 광촉매
티타니아
다공성
분무열분해법
가시광
photocatalysis
TiO2
macroporous
spray pyrolysis
visible light
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