High-efficiency hollow Zn0.98Cu0.02Se/ZnS/ZnTiO3 photocatalyst for hydrogen production application

Peng, Jiaru; Wang, Ying; Bai, Jiayu; Ma, Dingxuan; Zhao, Ruiyang; Han, Jishu; Wang, Lei

doi:10.1016/j.fuel.2022.124937

Cited by 9 publications

(5 citation statements)

References 69 publications

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“…Such technology has been investigated worldwide since the discovery of the Honda-Fujishima effect in 1972. , The schematic depiction of splitting water into oxygen and hydrogen over a photocatalyst is shown in Figure a. Ideally, there are three critical steps to succeed in hydrogen generation from water: (i) photon absorption with energy that is equal to or greater than the semiconductor bandgap for generation of the hole (h + ) - electron (e – ) pairs; (ii) separation of photocharges via bulk migration to the surface of the semiconductor; (iii) reaction with surface-adsorbed species, where the e – and h + are consumed in water reduction and water oxidation, respectively. , Under this mechanistic framework, the conduction band minimum of the employed photocatalyst must be more reductive and higher in the reduction potential scale than the reduction potential of water (0 V vs SHE) to prompt H 2 generation (Figure b). Similarly, to obtain O 2 from water, the valence band maximum of the photocatalyst has to be sufficiently oxidative in reference to that of water oxidation (1.23 V vs SHE) .…”

Section: Principles Of Photocatalytic Hydrogen Generationmentioning

confidence: 99%

Hydrogen Production by Water Splitting with Support of Metal and Carbon-Based Photocatalysts

Hoang

Pandey

Chen

et al. 2023

ACS Sustainable Chem. Eng.

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Hydrogen energy is environmental-friendly and considered an attractive alternative to fossil fuels. Among the feasible technologies for hydrogen generation, photocatalysis-derived hydrogen from water splitting is considered to be the optimal solution for meeting long-term sustainability and increased energy demands. In this context, various photocatalytic genres are proposed, with metal and carbon-supported photocatalysts demonstrating greater comprehensiveness and potential for addressing solar-driven hydrogen production from water. Several important aspects of the aforementioned photocatalytic genres are reviewed in the present work in an effort to provide pertinent researchers with new horizons for more advanced performance. The review is initiated by introducing the primary principles in photocatalysis, as well as the prerequisites for hydrogen generation from water. The focus then moves to metal-based photocatalysts, where the important features of these materials as photocatalysts are summarized. Related limitations are also discussed, along with the proposed strategies that could potentially mitigate them. Similar systematic summaries are made of knowledge on carbon-based photocatalysts. The review concludes with a discussion of potential future research directions in light of the bottlenecks currently encountered. With the proper research and development, metal-based and carbon-based photocatalysts could produce clean hydrogen from water, thereby fueling global development without causing environmental harm.

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Section: Principles Of Photocatalytic Hydrogen Generationmentioning

confidence: 99%

Hydrogen Production by Water Splitting with Support of Metal and Carbon-Based Photocatalysts

Hoang

Pandey

Chen

et al. 2023

ACS Sustainable Chem. Eng.

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“…The recovered energy as produced hydrogen is 286 KJ/mol, i.e., in the PEC case, the balance is positive. The main challenge consists of the selection of appropriate photocatalysts to split water into hydrogen and oxygen [53,54].…”

Section: Photoelectrolysismentioning

confidence: 99%

Perspectives on the Development of Technologies for Hydrogen as a Carrier of Sustainable Energy

Beschkov,

Ganev

2023

Energies

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Hydrogen is a prospective energy carrier because there are practically no gaseous emissions of greenhouse gases in the atmosphere during its use as a fuel. The great benefit of hydrogen being a practically inexhaustible carbon-free fuel makes it an attractive alternative to fossil fuels. I.e., there is a circular process of energy recovery and use. Another big advantage of hydrogen as a fuel is its high energy content per unit mass compared to fossil fuels. Nowadays, hydrogen is broadly used as fuel in transport, including fuel cell applications, as a raw material in industry, and as an energy carrier for energy storage. The mass exploitation of hydrogen in energy production and industry poses some important challenges. First, there is a high price for its production compared to the price of most fossil fuels. Next, the adopted traditional methods for hydrogen production, like water splitting by electrolysis and methane reforming, lead to the additional charging of the atmosphere with carbon dioxide, which is a greenhouse gas. This fact prompts the use of renewable energy sources for electrolytic hydrogen production, like solar and wind energy, hydropower, etc. An important step in reducing the price of hydrogen as a fuel is the optimal design of supply chains for its production, distribution, and use. Another group of challenges hindering broad hydrogen utilization are storage and safety. We discuss some of the obstacles to broad hydrogen application and argue that they should be overcome by new production and storage technologies. The present review summarizes the new achievements in hydrogen application, production, and storage. The approach of optimization of supply chains for hydrogen production and distribution is considered, too.

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“…In particular, photocatalytic H2 production by water cracking is widely considered a highly promising and environ-mentally friendly strategy owing to its low cost, lack of secondary pollution, and sustainable energy supply [9][10][11][12]. To date, various photocatalysts, such as TiO2 [13,14], CdS [15,16], ZnS [17,18], and g-C3N4 [19,20], have been developed for photocatalytic H2 production. Owing to its non-toxic, chemical stability, and low cost, TiO2 has been the most commonly used and studied H2 production semiconductor and it has demonstrated the potential for photocatalytic H2 production [21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Dual co-catalysts Ag/Ti3C2/TiO2 hierarchical flower-like microspheres with enhanced photocatalytic H2-production activity

Liu

Sun

Bai

et al. 2023

Chinese Journal of Catalysis

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High-efficiency hollow Zn0.98Cu0.02Se/ZnS/ZnTiO3 photocatalyst for hydrogen production application

Cited by 9 publications

References 69 publications

Hydrogen Production by Water Splitting with Support of Metal and Carbon-Based Photocatalysts

Hydrogen Production by Water Splitting with Support of Metal and Carbon-Based Photocatalysts

Perspectives on the Development of Technologies for Hydrogen as a Carrier of Sustainable Energy

Dual co-catalysts Ag/Ti3C2/TiO2 hierarchical flower-like microspheres with enhanced photocatalytic H2-production activity

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