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학술발표회초록보기

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제121회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Highly enhanced and stable activity of defect-induced titania nanoparticles for solar light-driven CO2 reduction into CH4

등록일
2018년 1월 23일 10시 24분 40초
접수번호
3240
발표코드
ENVR.O-2 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
목 09시 : 20분
발표형식
구두발표
발표분야
Environmental Energy - Oral Presentation for Young Scientist in Environmental and Energy Chemistry
저자 및
공동저자
Saurav Sorcar, SU IL IN1,*
Energy Science and Engineering, Daegu Gyeongbuk Institute of Science & Technology, Korea
1Department of Energy Science and Engineering, Daegu Gyeongbuk Institute of Science & Technology, Korea
Photocatalytic reduction of CO2 to fuel offers an exciting opportunity for helping to solve current energy and global warming problems. Although a number of solar active catalysts have been reported,most of them suffer from low product yield, instability, and low quantum efficiency. Therefore, the design and fabrication of highly active photocatalysts remains an unmet challenge. In the current work we utilize hydrogen-doped, blue-colored reduced titania for photocatalytic conversion of CO2 into methane (CH4). The photocatalyst is obtained by exposure of TiO2 to NaBH4 at 350 C for 0.5 h. Sensitized with Pt nanoparticles, the material promotes solar spectrum photoconversion of CO2 to CH4 with an apparent quantum yield of 12.40% and a time normalized CH4 generation rate of 80.35 micromol g-1 h-1, which to the best of our knowledge is a record for photocatalytic-based CO2 reduction. The material appears intrinsically stable, with no loss in sample performance over five 6 h cycles, with the sample heated in vacuum after each cycle.

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