Chinese Journal of Catalysis ›› 2018, Vol. 39 ›› Issue (3): 379-389.DOI: 10.1016/S1872-2067(17)62930-9

• Reviews • Previous Articles     Next Articles

Slow photons for solar fuels

Xiuzhen Zhenga,b, Yang Yanga, Shifu Chenb, Liwu Zhanga   

  1. a Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention, Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China;
    b College of Chemistry and Material Science, Huaibei Normal University, Huaibei 235000, Anhui, China
  • Received:2017-08-01 Revised:2017-09-14 Online:2018-03-18 Published:2018-03-10
  • Contact: 10.1016/S1872-2067(17)62930-9
  • Supported by:

    This work was supported by the National Natural Science Foundation of China (21607027, 21507011 and 21677037), and Ministry of Science and Technology of the People's Republic of China (2016YFE0112200).

Abstract:

Converting solar energy into hydrogen and hydrocarbon fuels through photocatalytic H2 production and CO2 photoreduction is a highly promising approach to address growing demand for clean and renewable energy resources. However, solar-to-fuel conversion efficiencies of current photocatalysts are not sufficient to meet commercial requirements. The narrow window of solar energy that can be used has been identified as a key reason behind such low photocatalytic reaction efficiencies. The use of photonic crystals, formed from multiple material components, has been demonstrated to be an effective way of improving light harvesting. Within these nanostructures, the slow-photon effect, a manifestation of light-propagation control, considerably enhances the interaction between light and the semiconductor components. This article reviews recent developments in the applications of photonic crystals to photocatalytic H2 production and CO2 reduction based on slow photons. These advances show great promise for improving light harvesting in solar-energy conversion technologies.

Key words: Photonic crystal, Slow photons, Inverse opal, Water splitting, Photocatalytic H2 production, CO2 photoreduction