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Issue 7, 2016
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CO2 photo-reduction: insights into CO2 activation and reaction on surfaces of photocatalysts

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Abstract

Large amounts of anthropogenic CO2 emissions associated with increased fossil fuel consumption have led to global warming and an energy crisis. The photocatalytic reduction of CO2 into solar fuels such as methane or methanol is believed to be one of the best methods to address these two problems. In addition to light harvesting and charge separation, the adsorption/activation and reduction of CO2 on the surface of heterogeneous catalysts remain a scientifically critical challenge, which greatly limits the overall photoconversion efficiency and selectivity of CO2 reduction. This review describes recent advances in the fundamental understanding of CO2 photoreduction on the surface of heterogeneous catalysts and particularly provides an overview of enhancing the adsorption/activation of CO2 molecules. The reaction mechanism and pathways of CO2 reduction as well as their dependent factors are also analyzed and discussed, which is expected to enable an increase in the overall efficiency of CO2 reduction through minimizing the reaction barriers and controlling the selectivity towards the desired products. The challenges and perspectives of CO2 photoreduction over heterogeneous catalysts are presented as well.

Graphical abstract: CO2 photo-reduction: insights into CO2 activation and reaction on surfaces of photocatalysts

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Publication details

The article was received on 05 Feb 2016, accepted on 17 Mar 2016 and first published on 17 Mar 2016


Article type: Review Article
DOI: 10.1039/C6EE00383D
Citation: Energy Environ. Sci., 2016,9, 2177-2196
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    CO2 photo-reduction: insights into CO2 activation and reaction on surfaces of photocatalysts

    X. Chang, T. Wang and J. Gong, Energy Environ. Sci., 2016, 9, 2177
    DOI: 10.1039/C6EE00383D

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