The Principle of Photoelectrochemical Water Splitting

Ma, Peiyan; Wang, Dunwei

doi:10.1142/9781786343635_0001

Cited by 6 publications

(5 citation statements)

References 69 publications

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“…Also, a highly active and large surface area provides more adsorption sites for H + and OH – , which are involved in the reduction/oxidation of water. Resistance to charge buildup and quick utilization of the photogenerated e–h pair significantly enhance kinetics and reduce photocorrosion. ,− Cocatalyst alters the reaction coordinate by providing a low activation energy pathway and thereby facilitating the complex four electron transfer process. IrO 2 , RuO 2 , and Pt are among the known noble metal catalysts, while MoO x , MoS 2 , CoB i , CoP i , FeOOH, NiOOH, and transition metal layered double hydroxides are examples of a few cost-effective earth abundant cocatalysts for photoanodes which have good efficiency and stability for PEC water splitting.…”

Section: Discussion On the Enhancement Of Performancementioning

confidence: 99%

Enhancing the PEC Efficiency in the Perspective of Crystal Facet Engineering and Modulation of Surfaces

Manna,

Satpati,

Patra

et al. 2024

ACS Omega

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Generation of hydrogen is one of the most promising routes to harvest solar energy for its sustainable utilization. Among different routes, the photoelectrochemical (PEC) process to split water using solar light to produce hydrogen is the green method to generate hydrogen. The sluggish kinetics through complicated pathways makes the oxygen evolution reaction the rate limiting step of the overall water splitting process. Therefore, development of an efficient photoanode for the sustainable oxidation of water is most challenging in an efficient overall PEC water splitting process. The low solar to hydrogen conversion efficiency arises from the slow surface kinetics, poor hole diffusion, and fast charge recombination processes. There have been strategies to improve catalytic performances through the removal of such detrimental effects. The generation of engineered surfaces is one of the important strategies recently adopted for the enhancement of the catalytic efficiencies. The present review has been focused on the discussion of engineered surfaces using crystal facet engineering, protective surface layer, passivation using the atomic layer deposition (ALD) technique, and cocatalyst modified surfaces to enhance the catalytic efficiency. Some of the important parameters defining catalyst performance are also discussed at the beginning of the review.

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Section: Discussion On the Enhancement Of Performancementioning

confidence: 99%

Enhancing the PEC Efficiency in the Perspective of Crystal Facet Engineering and Modulation of Surfaces

Manna,

Satpati,

Patra

et al. 2024

ACS Omega

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“…This process offers a promising approach for producing renewable hydrogen fuel, as it uses sunlight as its primary energy source, and the only byproduct is oxygen. 8,9 At the same time, electrocatalytic water splitting utilizes external bias as a primary energy source to split water into H 2 and O 2 . 10 Biomass-derived fuels, such as biofuels and biogas, are produced from organic materials such as agricultural waste, forest residues, and municipal solid waste.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Advancements in catalysts for glycerol oxidation via photo-/electrocatalysis: a comprehensive review of recent developments

Kumar,

Meena,

et al. 2023

Green Chem.

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“…The influence of enhanced charge separation and surface catalytic reactions selectively improves the kinetics of the reactions. Among the benefits listed above, cocatalysts prevent recombination and charges from building up at the interface by quickly devouring charge carriers and making the material resistant to photocorrosion by physically separating the semiconductor from the electrolyte 19,20 .…”

Section: Introductionmentioning

confidence: 99%

Recent trends in photoelectrochemical water splitting: the role of cocatalysts

et al. 2022

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Environmental degradation due to the carbon emissions from burning fossil fuels has triggered the need for sustainable and renewable energy. Hydrogen has the potential to meet the global energy requirement due to its high energy density; moreover, it is also clean burning. Photoelectrochemical (PEC) water splitting is a method that generates hydrogen from water by using solar radiation. Despite the advantages of PEC water splitting, its applications are limited by poor efficiency due to the recombination of charge carriers, high overpotential, and sluggish reaction kinetics. The synergistic effect of using different strategies with cocatalyst decoration is promising to enhance efficiency and stability. Transition metal-based cocatalysts are known to improve PEC efficiency by reducing the barrier to charge transfer. Recent developments in novel cocatalyst design have led to significant advances in the fundamental understanding of improved reaction kinetics and the mechanism of hydrogen evolution. To highlight key important advances in the understanding of surface reactions, this review provides a detailed outline of very recent reports on novel PEC system design engineering with cocatalysts. More importantly, the role of cocatalysts in surface passivation and photovoltage, and photocurrent enhancement are highlighted. Finally, some challenges and potential opportunities for designing efficient cocatalysts are discussed.

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The Principle of Photoelectrochemical Water Splitting

Cited by 6 publications

References 69 publications

Enhancing the PEC Efficiency in the Perspective of Crystal Facet Engineering and Modulation of Surfaces

Enhancing the PEC Efficiency in the Perspective of Crystal Facet Engineering and Modulation of Surfaces

Advancements in catalysts for glycerol oxidation via photo-/electrocatalysis: a comprehensive review of recent developments

Recent trends in photoelectrochemical water splitting: the role of cocatalysts

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