abs

학술발표회초록보기

초록문의 abstract@kcsnet.or.kr

결제문의 member@kcsnet.or.kr

현재 가능한 작업은 아래와 같습니다.
  • 09월 04일 17시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제114회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Cu2ZnSnS4 (CZTS) nanocrystal/TiO2 composites for efficient photocatalytic reduction of CO2

등록일
2014년 8월 28일 15시 22분 00초
접수번호
1081
발표코드
ENVR.P-1272 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
10월 15일 (수요일) 16:00~19:00
발표형식
포스터
발표분야
환경에너지
저자 및
공동저자
인수일*, 김기돈
대구경북과학기술원(DGIST) 에너지 시스템 공학 전공, Korea
CO2 emissions is one of the largest political causing global warming. A variety of approaches for addressing CO2 emissions are currently under research. Photocatalyst is one of the effective strategies to solve this issue. TiO2-based materials are the most stable and preferred photocatalysts. But TiO2 are only active under ultraviolet (UV) irradiation, because TiO2 has a demerit of wide bandgap (3.3eV). For the efficient use of TiO2 photocatalysts, one of the approaches is to couple it with another small bandgap photocatalytic material focused on broadened light absorption region. The band alignment between Cu2ZnSnS4 (CZTS) nanocrystal and TiO2 favors charge separation across the interface, eliminating inefficiencies associated with direct carrier recombination. In this work, an attempt was done to fabricate hybrid photocatalyst based upon p-n heterojunction and applied for CO2 photoreduction. CZTS, a well-known p-type semiconductor with a narrower direct band gap of 1.5eV, was synthesized and coupled with n-type TiO2. The synthesis of hybrid photocatalyts was confirmed by numerous characterization techniques such as XRD, TEM, and UV-Vis spectroscopy.

상단으로