A critical review on TiO2 based photocatalytic CO2 reduction system: Strategies to improve efficiency

Shehzad, N. and Tahir, M. and Johari, K. and Murugesan, T. and Hussain, M. (2018) A critical review on TiO2 based photocatalytic CO2 reduction system: Strategies to improve efficiency. Journal of CO2 Utilization, 26. pp. 98-122.

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Abstract

The massive burning of fossil fuels to fulfill the augmenting energy demands of world have triggered the ever-increasing emission of carbon dioxide (CO2); the main cause of global warming. Photocatalytic reduction of CO2 into solar fuels and chemicals using everlasting solar energy seems promising technology to contemporaneously curb the globa1 warming and partially fulfill the energy requirements. This study focused on understanding the main challenges in photocatalytic CO2 reduction systems and strategies to improve the efficiency of solar fuels production. The overview of fundamentals and latest developments in titania (TiO2) based photocatalytic CO2 reduction systems have been discussed. More specifically, thermodynamics, mass transfer, selectivity and reaction mechanism of photocatalytic CO2 reduction are critically deliberated. In the main stream, developments have been categorized as strategies to enhance the different aspects such as visible light response, charge separation, CO2 adsorption and morphology of photo-catalysts for TiO2 based photocatalytic CO2 reduction systems. Different modification techniques to overcome the low efficiency by fabricating advance TiO2 nanocomposites through surface modifications, doping of metals, non-metals and semiconductor are discussed. The challenges lingering on against achieving the higher photocatalytic conversion of CO2 into solar fuels are also investigated. In conclusion, brief perspectives and recommendations on the development of efficient photocatalysts are outlined which would be of vital importance for the improvements of conversion efficiency of CO2 reduction system. © 2018 Elsevier Ltd.

Item Type: Article
Impact Factor: cited By 0
Uncontrolled Keywords: Fossil fuels; Global warming; Graphene; Image enhancement; Magnetic semiconductors; Mass transfer; Semiconductor doping; Solar energy; Thermodynamics; Titanium dioxide, Charge separations; CO2 reduction; Energy requirements; Latest development; Photocatalytic reduction; Reaction mechanism; TiO2; Visible-light response, Carbon dioxide
Depositing User: Mr Ahmad Suhairi Mohamed Lazim
Date Deposited: 26 Feb 2019 02:26
Last Modified: 26 Feb 2019 02:26
URI: http://scholars.utp.edu.my/id/eprint/20822

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