A Synergic Effect of Bi-metallic Layered Hydro-Oxide Cocatalyst on 1-D TiO2 Driven Photoelectrochemical Water Splitting

Ali, Rana Basit; Sial, Qadeer Akbar; Lee, Young Jae; Waqas, M.; Kalanur, Shankara S.; Seo, Hyungtak

doi:10.1080/21870764.2023.2237358

Cited by 6 publications

(1 citation statement)

References 51 publications

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“…Moreover, the utilization of such photocathodes is limited due to the poor charge diffusion/catalysis, stability, and toxic nature, respectively [ 45 , 46 , 47 ]. In addition, several strategies have been used to enhance the PEC properties of semiconductors, which include catalyst coating [ 48 ], doping [ 49 ], oxygen vacancy engineering [ 50 ], work function tuning [ 51 ], heterojunction formation [ 52 ], etc. Convincingly, the comprehensive and extensive research progress from the literature implicates that the utilization of suitable materials provides the key to efficient and stable solar water splitting reactions.…”

Section: Photoelectrochemical Water Spittingmentioning

confidence: 99%

State of the Art Progress in Copper Vanadate Materials for Solar Water Splitting

Kalanur,

Seetharamappa,

Sial

et al. 2023

Nanomaterials

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The development of a single junction photoelectrode material having specific properties is essential and challenging for the efficient application in solar water splitting for oxygen production and a high value-added product, hydrogen. Moreover, the present material solutions based on binary metal oxides offer limited catalytic activity and hydrogen production efficiency. Therefore, it is paramount to develop and exploit a unique range of materials derived from ternary metal oxides with specifically engineered properties to advance in photoelectrochemical (PEC) water splitting. Among the ternary oxides, copper vanadates offer promising characteristics, such as a narrow bandgap and catalytic surface properties along with favorable band edges for facile oxygen evolution reaction (OER), which is considered the bottleneck step in performing overall water dissociation. Furthermore, the copper vanadates allow the tuning of the stoichiometry through which a wide range of polymorphs and materials could be obtained. This review provides a complete outlook on the range of copper vanadates and the established synthesis approach, morphology, crystal structure, band edge properties, and PEC characterizations. Mainly, the underlying charge dynamic properties, carrier path length, effect of doping, and influence of surface catalysts are discussed. The review concludes that the advancement toward obtaining low-bandgap materials is a main challenge to overcome the limitations for efficient water dissociation to OER and copper vanadates, which offer a promising solution with their unique properties and advantages. Importantly, intense and strategically focused research is vital to overcome the scientific challenges involved in copper vanadates and to explore and exploit new polymorphs to set new efficiency benchmarks and PEC water splitting solutions.

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