Solar Photocatalytic Hydrogen Production from Water Using a Dual Bed Photosystem.

Linkous, C. A. ; Slattery, D. K. ; Fowler, J. R.

Technical Information Center Oak Ridge Tennessee

关键词: Hydrogen production;    Photolysis;    Catalysts;    Design;    Hydrogen generators;   

RP-ID  :  DE2004828249

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

A body of work was performed in which the feasibility of photocatalytically decomposing water into its constituent elements using a dual bed, or modular photosystem, under solar radiation was investigated. The system envisioned consists of two modules, each consisting of a shallow, flat, sealed container, in which microscopic photocatalytic particles are immobilized. The photocatalysts absorb light, generating free electrons and lattice vacancy holes, which are capable of performing reductive and oxidative chemistry, respectively. The photocatalysts would be chosen as to whether they specifically promote H(sub 2) or O(sub 2) evolution in their respective containers. An aqueous solution containing a redox mediator is pumped between the two chambers in order to transfer electron equivalents from one reaction to the other.