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Photocatalytic Conversion of Carbon Dioxide into Hydrocarbons

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Conversion of Carbon Dioxide into Hydrocarbons Vol. 1 Catalysis

Abstract

The significant upward rise in atmospheric CO2 level through combustion of fossil fuel, deforestation, and human activates could contribute to severe environmental issues like greenhouse effect and climate change. Conversion of CO2 into chemical fuels or hydrocarbons is an effective way for mitigating the level of CO2 in the atmosphere, producing value-added products and improving energy security in the light of depletion of carbon-based energy sources. Besides, carbon dioxide is an attractive starting precursor material for producing chemical fuel, owing to its abundance, low cost, and low toxicity. Due to its stability, extra energy is favored to transform CO2 into hydrocarbon or chemical fuel. Various techniques have been employed for CO2 conversion which includes chemical, thermal, biological, electrocatalytic, and photocatalytic conversion. Among such methods, the application of photocatalysis in carbon dioxide conversion plays a significant role to resolve energy crisis and global warming. The process employs light-driven photocatalytic transformation of carbon dioxide to value-added chemical fuels including methane, carbon monoxide, formic acid, formaldehyde, methanol, and ethanol.

The overall conversion efficacy can be enhanced through the fabrication of more efficient visible light active photocatalyst and suitable configuration of photoreactor. Numerous reports have been devoted to the fabrication of semiconductor-based photocatalysts for carbon dioxide conversion process. However, inadequate absorption of visible light and rapid photogenerated charge carrier recombination rate of single semiconductor-based photocatalyst will influence the CO2 photoconversion efficiency. In order to improve the performance of photocatalytic material, different augmentation strategies are available which include doping with metal/non-metal sensitization and hybridization of photocatalysts. In this chapter, the fundamental aspect of the heterogeneous photocatalytic carbon dioxide conversion using various semiconductor-based photocatalysts is summarized. Moreover, different surface modification routes adapted in photocatalytic materials have been presented in detail. Additionally, the influence of various experimental parameters and different types of photoreactors for carbon dioxide photoconversion is described with applications.

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Abbreviations

IEA:

International Energy Agency

LDHs:

Layered double hydroxides

RGO:

Reduced graphene oxide

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Correspondence to Sheeba Narayanan .

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Murugesan, P., Narayanan, S., Manickam, M. (2020). Photocatalytic Conversion of Carbon Dioxide into Hydrocarbons. In: Inamuddin, Asiri, A., Lichtfouse, E. (eds) Conversion of Carbon Dioxide into Hydrocarbons Vol. 1 Catalysis. Environmental Chemistry for a Sustainable World, vol 40. Springer, Cham. https://doi.org/10.1007/978-3-030-28622-4_6

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