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A critical review in strategies to improve photocatalytic water splitting towards hydrogen production

Nur Fajrina, Nur Fajrina and Tahir, Muhammad (2019) A critical review in strategies to improve photocatalytic water splitting towards hydrogen production. International Journal of Hydrogen Energy, 44 (2). pp. 540-577. ISSN 0360-3199

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Official URL: http://dx.doi.org/10.1016/j.ijhydene.2018.10.200

Abstract

Water splitting for hydrogen production under light irradiation is an ideal system to provide renewable energy sources and to reduce global warming effects. Even though significant efforts have been devoted to fabricate advanced nanocomposite materials, the main challenge persists, which is lower efficiency and selectivity towards H 2 evolution under solar energy. In this review, recent developments in photo-catalysts, fabrication of novel heterojunction constructions and factors influencing the photocatalytic process for dynamic H 2 production have been discussed. In the mainstream, recent developments in TiO 2 and g-C 3 N 4 based photo-catalysts and their potential for H 2 production are extensively studied. The improvements have been classified as strategies to improve different factors of photocatalytic water splitting such as Z-scheme systems and influence of operating parameters such as band gap, morphology, temperature, light intensity, oxygen vacancies, pH, and sacrificial reagents. Moreover, thermodynamics for selective photocatalytic H 2 production are critically discussed. The advances in photo-reactors and their role to provide more light distribution and surface area contact between catalyst and light were systematically described. By applying the optimum operating parameters and new engineering approach on photoreactor, the efficiency of semiconductor photocatalysts for H 2 production can be enhanced. The future research and perspectives for photocatalytic water splitting were also suggested.

Item Type:Article
Uncontrolled Keywords:heterojunctions, hydrogen production, photocatalysis, photoreactors, thermodynamics
Subjects:T Technology > TP Chemical technology
Divisions:Chemical and Energy Engineering
ID Code:87646
Deposited By: Yanti Mohd Shah
Deposited On:30 Nov 2020 17:06
Last Modified:30 Nov 2020 17:06

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