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A review of nanostructured non-titania photocatalysts and hole scavenging agents for CO₂ photoreduction processes
- Tan, Jeannie Z. Y., Maroto-Valer, M. Mercedes
- Journal of materials chemistry A 2019 v.7 no.16 pp. 9368-9385
- carbon dioxide, fossil fuels, greenhouse gas emissions, hydrocarbons, nitrides, photocatalysts, solar energy, sulfides, titanium dioxide
- The imperative for the development of sustainable energy technologies to alleviate the heavy reliance on fossil fuels as well as to mitigate the serious environmental issues associated with CO₂ emission has fostered the development of solar fuels through CO₂ photoreduction. The well-documented TiO₂ and modified TiO₂-based photocatalysts have been shown to photoreduce CO₂ into hydrocarbons. Meanwhile, there is also an increasing interest in the utilisation of non-titania based materials, namely metal sulphides, oxides, oxynitrides and nitrides, for CO₂ photoreduction. Distinct from other published reviews, we discuss here recent progress made in designing metal sulphide, oxide, oxynitride and nitride photocatalysts for CO₂ photoreduction through morphological changes, aiming at providing a systematic summary of non-titania based materials for CO₂ photoreduction. Furthermore, the introduction of hole scavengers in order to maximise the CO₂ photoreduction efficiency is also reviewed.