Copper‐Based Chalcopyrite and Kesterite Materials for Solar Hydrogen Generation

Altaf, Çiğdem Tunç; Abdullayeva, Nazrin; Sankır, Nurdan Demirci

doi:10.1002/9781119460008.ch7

Cited by 8 publications

(13 citation statements)

References 204 publications

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“…The photocurrent of films annealed at 800°C was less than the value recorded for films annealed at 750°C despite having a slightly lower Rct. This is because of the low surface states capacitance recorded for films annealed at 800°C and its high series resistance Rs associated with the FTO/hematite contact which will limit flow of electrons from the photoanode to the cathode through the back-contact [45].…”

Section: Electrochemical Impedance Spectroscopy (Eis) Studiesmentioning

confidence: 99%

Modified annealing approach for preparing multi-layered hematite thin films for photoelectrochemical water splitting

Kyesmen

Nombona

Diale

2020

Materials Research Bulletin

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Section: Electrochemical Impedance Spectroscopy (Eis) Studiesmentioning

confidence: 99%

Modified annealing approach for preparing multi-layered hematite thin films for photoelectrochemical water splitting

Kyesmen

Nombona

Diale

2020

Materials Research Bulletin

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“…The utilization of water resources and solar energy as the most abundant energy source to accomplish green hydrogen production through solar water splitting has garnered a rising interest for the last three decades. − Inspired by natural photosynthesis, the photocatalytic water-splitting process harvests solar radiation to separate electrons from water molecules and store them in high-energy chemical bonds . Even though the process has great potential for large-scale hydrogen production, the limited suitable catalysts and systems restrict the overall solar-to-hydrogen (STH) efficiency with high efficiency.…”

Section: Composite Membranes For Renewable H2 Productionmentioning

confidence: 99%

A Review of the Recent Advances in Composite Membranes for Hydrogen Generation Technologies

Altaf,

Colak,

Karagoz

et al. 2024

ACS Omega

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Keeping global warming at 2 degrees and below as stated in the "Paris Climate Agreement" and minimizing emissions can only be achieved by establishing a hydrogen (H 2 ) ecosystem. Therefore, H 2 technologies stand out in terms of accomplishing zero net emissions. Although H 2 is the most abundant element in the known universe, molecular H 2 is very rare in nature and must be produced. In H 2 production, reforming natural gas and renewable hydrogen processes using electrolyzers comes to the fore. The key to all these technologies is to enhance production speed, performance, and system lifetime. At this point, composite membranes used in both processes come to the fore. This review article summarizes composite membrane technologies used in methane, ethanol, and biomass steam reforming processes, proton exchange membranes, alkaline water electrolysis, and hybrid sulfur cycle. In addition to these common H 2 production technologies at large quantities, the innovative systems developed with solar energy integration for H 2 generation were linked to composite membrane utilization. This study aimed to draw attention to the importance of composite membranes in H 2 production. It aims to prepare a guiding summary for those working on membranes by combining the latest and cutting-edge studies on this subject.

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“…where P(λ) is the light intensity (mW/cm 2 ) at a specific wavelength λ, and I is the photocurrent density (mA/cm 2 ) [14,67,68]. Absorbed photon-to-current conversion efficiency (APCE) is another critical measurement that is an internal quantum efficiency representing optical quantity related to the reflection losses.…”

Section: Efficiency Evaluation In a Photocatalytic Processmentioning

confidence: 99%

Recent Progress on Semiconductor Heterogeneous Photocatalysts in Clean Energy Production and Environmental Remediation

Goodarzi,

Ashrafi-Peyman,

Khani

et al. 2023

Catalysts

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Semiconductor-based photocatalytic reactions are a practical class of advanced oxidation processes (AOPs) to address energy scarcity and environmental pollution. By utilizing solar energy as a clean, abundant, and renewable source, this process offers numerous advantages, including high efficiency, eco-friendliness, and low cost. In this review, we present several methods to construct various photocatalyst systems with excellent visible light absorption and efficient charge carrier separation ability through the optimization of materials design and reaction conditions. Then it introduces the fundamentals of photocatalysis in both clean energy generation and environmental remediation. In the other parts, we introduce various approaches to enhance photocatalytic activity by applying different strategies, including semiconductor structure modification (e.g., morphology regulation, co-catalysts decoration, doping, defect engineering, surface sensitization, heterojunction construction) and tuning and optimizing reaction conditions (such as photocatalyst concentration, initial contaminant concentration, pH, reaction temperature, light intensity, charge-carrier scavengers). Then, a comparative study on the photocatalytic performance of the various recently examined photocatalysts applied in both clean energy production and environmental remediation will be discussed. To realize these goals, different photocatalytic reactions including H2 production via water splitting, CO2 reduction to value-added products, dye, and drug photodegradation to lessen toxic chemicals, will be presented. Subsequently, we report dual-functional photocatalysis systems for simultaneous energy production and pollutant photodegradation for efficient reactions. Then, a brief discussion about the industrial and economical applications of photocatalysts is described. The report follows by introducing the application of artificial intelligence and machine learning in the design and selection of an innovative photocatalyst in energy and environmental issues. Finally, a summary and future research directions toward developing photocatalytic systems with significantly improved efficiency and stability will be provided.

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Copper‐Based Chalcopyrite and Kesterite Materials for Solar Hydrogen Generation

Cited by 8 publications

References 204 publications

Modified annealing approach for preparing multi-layered hematite thin films for photoelectrochemical water splitting

Modified annealing approach for preparing multi-layered hematite thin films for photoelectrochemical water splitting

A Review of the Recent Advances in Composite Membranes for Hydrogen Generation Technologies

Recent Progress on Semiconductor Heterogeneous Photocatalysts in Clean Energy Production and Environmental Remediation

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