CO2 photoreduction at enzyme-modified metal oxide nanoparticles

被引：130
|
作者：
Woolerton, Thomas W. [1 ]
Sheard, Sally [1 ]
Pierce, Elizabeth [2 ]
Ragsdale, Stephen W. [2 ]
Armstrong, Fraser A. [1 ]
机构：
[1] Univ Oxford, Inorgan Chem Lab, Dept Chem, Oxford OX1 3QR, England
[2] Univ Michigan, Dept Biol Chem, Ann Arbor, MI 48109 USA
来源：
ENERGY & ENVIRONMENTAL SCIENCE | 2011年 / 4卷 / 07期
基金：
英国生物技术与生命科学研究理事会; 英国工程与自然科学研究理事会;
关键词：
CARBON-MONOXIDE DEHYDROGENASE; ELECTROCHEMICAL REDUCTION; CARBOXYDOTHERMUS-HYDROGENOFORMANS; ELECTROCATALYTIC REDUCTION; PALLADIUM COMPLEX; DIOXIDE; TITANIUM; FILMS; TIO2; PHOTOCATALYST;
D O I：
10.1039/c0ee00780c
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A model system for photoreduction of CO2 to CO using visible light has been extensively studied, using a catalyst for which the CO2/CO reaction is electrochemically reversible. The hybrid system comprises metal oxide nanoparticles functionalised with the enzyme carbon monoxide dehydrogenase (CODH), and sensitised to visible light using a ruthenium bipyridyl photosensitiser. An anatase/rutile TiO2 mixture (Evonik Degussa P25) was selected as the most suitable semiconductor, and CO production rates and stability were examined as a function of each component (photosensitiser, enzyme and TiO2). Tolerance to O-2 and effects of different electron donors were also investigated, together with strategies to control enzyme binding at the surface of TiO2 in order to enhance overall activity.
引用
收藏
页码：2393 / 2399
页数：7
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