DICP OpenIR
学科主题物理化学
Photocatalytic Hydrogen Production Utilizing Solar Energy
Li C(李灿)
会议文集Singapore Catalysis Society 4th ANNUAL FORUM
会议名称Singapore Catalysis Society 4th ANNUAL FORUM
会议日期2011-5-20
2011
会议地点Biopolis
页码4-0
出版者待补充
出版地待补充
合作性质特邀报告
部门归属503
主办者Singapore Catalysis Society
英文摘要Solar energy is the primary source for clean and renewable energy alternative. The concerns about the depletion of fossil fuel reserves and the pollution caused by continuously increasing energy demands make solar fuels an attractive energy source. This lecture discusses the key issues concerning the photocatalytic materials designating and preparation for the productions of solar fuels, mainly photocatalytic hydrogen production and photocatalytic reduction of CO2 utilizing solar energy, focusing on the fundamental understanding of photocatalysis and photochemical reactions on semiconductor-based photocatalysts. Semiconductor-based nano materials are believed to be the most promising components for photocatalysts, so the discovery and preparation of novel semiconductor materials are crucial for the development of advanced photocatalysts. To convert solar energy efficiently to chemical energy, much attention has been paid to reducing charge recombination and improving solar energy conversion efficiency. Our recent results demonstrate that the formation of surface phase junction and hetero-junction on semiconductor catalysts can significantly enhance the activity in photocatalytic hydrogen production. By mimicking the photosynthesis, loading spatially separated dual cocatalysts for oxidation and reduction on semiconductor nanoparticles can effectively avoid the charge recombination and consequently increase the photocatalytic activity. A recent progress made in photocatalytic hydrogen production shows that a quantum yield up to 93% can be achieved for Pt-PdS/CdS catalysts where the dual co-catalysts, Pt and PdS nanoparticles act as reduction and oxidation co-catalysts respectively. The finely designing and preparation of junctions at atomic and nano-scale together with spatially separated right co-catalysts are the strategy to develop highly active photocatalysts for solar fuel production.; Solar energy is the primary source for clean and renewable energy alternative. The concerns about the depletion of fossil fuel reserves and the pollution caused by continuously increasing energy demands make solar fuels an attractive energy source. This lecture discusses the key issues concerning the photocatalytic materials designating and preparation for the productions of solar fuels, mainly photocatalytic hydrogen production and photocatalytic reduction of CO2 utilizing solar energy, focusing on the fundamental understanding of photocatalysis and photochemical reactions on semiconductor-based photocatalysts. Semiconductor-based nano materials are believed to be the most promising components for photocatalysts, so the discovery and preparation of novel semiconductor materials are crucial for the development of advanced photocatalysts. To convert solar energy efficiently to chemical energy, much attention has been paid to reducing charge recombination and improving solar energy conversion efficiency. Our recent results demonstrate that the formation of surface phase junction and hetero-junction on semiconductor catalysts can significantly enhance the activity in photocatalytic hydrogen production. By mimicking the photosynthesis, loading spatially separated dual cocatalysts for oxidation and reduction on semiconductor nanoparticles can effectively avoid the charge recombination and consequently increase the photocatalytic activity. A recent progress made in photocatalytic hydrogen production shows that a quantum yield up to 93% can be achieved for Pt-PdS/CdS catalysts where the dual co-catalysts, Pt and PdS nanoparticles act as reduction and oxidation co-catalysts respectively. The finely designing and preparation of junctions at atomic and nano-scale together with spatially separated right co-catalysts are the strategy to develop highly active photocatalysts for solar fuel production.
文献类型会议论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/116089
专题中国科学院大连化学物理研究所
通讯作者Li C(李灿)
推荐引用方式
GB/T 7714
Li C. Photocatalytic Hydrogen Production Utilizing Solar Energy[C]. 待补充:待补充,2011:4-0.
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