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  • 02월 19일 23시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제119회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Hybrid mesoporous Cu2ZnSnS4 (CZTS)?TiO2 photocatalyst for efficient photocatalytic conversion of CO2 into CH4 under solar irradiation

등록일
2017년 2월 16일 11시 36분 42초
접수번호
4387
발표코드
ENVR.P-513 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
4월 20일 (목요일) 11:00~12:30
발표형식
포스터
발표분야
환경에너지
저자 및
공동저자
Sorcar Saurav, 인수일1,*
DGIST 에너지시스템공학, Korea
1DGIST 에너지 시스템 공학 전공, Korea
A major concern facing global society is the ongoing excessive release of CO2 into the atmosphere where it acts as a heat-trapping greenhouse gas. One approach to helping control atmospheric CO2 concentrations is to use solar energy to convert CO2 into useful products, namely hydrocarbons, by use of specifically designed photocatalytic materials. While numerous photocatalysts have been investigated for use in CO2 reduction, the field remains in it's infancy with, overall, relatively poor photoconversion efficiencies and product selectivity. This study reports the synthesis and design of a mesoporous noble metal free p-type Cu2ZnSnS4 (CZTS)/n-type TiO2 heterojunction photocatalyst for broad spectrum light absorption, enhanced charge separation and transfer that, in turn, enhances photocatalytic CO2 conversion. A maximum methane production rate of 118.75 ppm · g-1 · h-1 is observed, which represents a methane evolution rate approximately 12 times greater than that of pure TiO2. The key factors contributing to the enhanced photocatalytic performance seen in the mesoporous CZTS–TiO2 samples include improved light absorption, high surface area, and effective charge separation.

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