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Materials 2017, 10(6), 629; doi:10.3390/ma10060629

Advances in Photocatalytic CO2 Reduction with Water: A Review

1
Sustainable Construction Materials and Building Systems (SUCOMBS) Research Group, Universiti Kebangsaan Malaysia (UKM), UKM Bangi 43600, Malaysia
2
Department of Architecture, Universiti Kebangsaan Malaysia (UKM), UKM Bangi 43600, Malaysia
3
Department of Chemical & Process Engineering, Universiti Kebangsaan Malaysia (UKM), UKM Bangi 43600, Malaysia
4
Department of Civil & Structural Engineering, Universiti Kebangsaan Malaysia (UKM), UKM Bangi 43600, Malaysia
*
Authors to whom correspondence should be addressed.
Academic Editor: Peter Loutzenhiser
Received: 15 February 2017 / Revised: 4 April 2017 / Accepted: 23 May 2017 / Published: 8 June 2017
View Full-Text   |   Download PDF [2724 KB, uploaded 8 June 2017]   |  

Abstract

In recent years, the increasing level of CO2 in the atmosphere has not only contributed to global warming but has also triggered considerable interest in photocatalytic reduction of CO2. The reduction of CO2 with H2O using sunlight is an innovative way to solve the current growing environmental challenges. This paper reviews the basic principles of photocatalysis and photocatalytic CO2 reduction, discusses the measures of the photocatalytic efficiency and summarizes current advances in the exploration of this technology using different types of semiconductor photocatalysts, such as TiO2 and modified TiO2, layered-perovskite Ag/ALa4Ti4O15 (A = Ca, Ba, Sr), ferroelectric LiNbO3, and plasmonic photocatalysts. Visible light harvesting, novel plasmonic photocatalysts offer potential solutions for some of the main drawbacks in this reduction process. Effective plasmonic photocatalysts that have shown reduction activities towards CO2 with H2O are highlighted here. Although this technology is still at an embryonic stage, further studies with standard theoretical and comprehensive format are suggested to develop photocatalysts with high production rates and selectivity. Based on the collected results, the immense prospects and opportunities that exist in this technique are also reviewed here. View Full-Text
Keywords: photocatalysis; CO2 reduction; visible light irradiation; plasmonic photocatalyst; surface plasmon resonance (SPR) photocatalysis; CO2 reduction; visible light irradiation; plasmonic photocatalyst; surface plasmon resonance (SPR)
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Nahar, S.; Zain, M.F.M.; Kadhum, A.A.H.; Hasan, H.A.; Hasan, M.R. Advances in Photocatalytic CO2 Reduction with Water: A Review. Materials 2017, 10, 629.

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