CdS-dots decorated WO3 nanorods photocatalyst with highly ordered interfacial structure for enhanced photocatalytic activities via Z-scheme mechanism

Zhao, Lei; Zhang, Yuan; Ye, Zhupeng; Chen, Xin; Zeng, Yanwei

doi:10.1016/j.ijhydene.2021.01.023

Cited by 17 publications

(2 citation statements)

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“…Furthermore, semiconductors with a narrow bandgap, such as WO 3 , BiVO 4 , Fe 2 O 3 , and CdS can be used as alternatives to TiO 2 . [100][101][102] Besides the photon absorption and exciton generation, the dynamics of the electrons and holes, including trapping, recombination, and interfacial transfer, can also affect the PEC performance of semiconductors, [103] and a strong dependency on the crystal structure, the presence of defects, size, and conductivity of the photocatalyst has been observed.…”

Section: Sunlight To Produce Hmentioning

confidence: 99%

Hydrogen Environmental Benefits Depend on the Way of Production: An Overview of the Main Processes Production and Challenges by 2050

Germscheidt

Moreira

Yoshimura

et al. 2021

Adv Energy and Sustain Res

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Hydrogen (H 2 ) is presented as an important alternative for clean energy and raw material in the modern world. However, the environmental benefits are linked to its process of production. Herein, the chemical aspects, advantages/disadvantages, and challenges of the main processes of H 2 production from petroleum to water are described. The fossil fuel (FF)-based methods and the state-of-art strategies are outlined to produce hydrogen from water (electrolysis), wastewater, and seawater. In addition, a discussion based on a color code to classify the cleanliness of hydrogen production is introduced. By the end, a summary of the hydrogen value chain addresses topics related to the financial aspects and perspective for 2050: green hydrogen and zero-emission carbon.

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Section: Sunlight To Produce Hmentioning

confidence: 99%

Hydrogen Environmental Benefits Depend on the Way of Production: An Overview of the Main Processes Production and Challenges by 2050

Germscheidt

Moreira

Yoshimura

et al. 2021

Adv Energy and Sustain Res

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“…1D WO 3 forms Z-scheme heterojunctions when decorated by QDs and CdS dots. The formation of the heterojunction helps contribute to the overall efficiency of the photocatalyst [114].…”

Section: Dmentioning

confidence: 99%

Recent advancements in strategies to improve performance of tungsten-based semiconductors for photocatalytic hydrogen production: a review

Mim¹,

Aldeen²,

Alhebshi³

et al. 2021

J. Phys. D: Appl. Phys.

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Multiple efforts have been made to find and utilize sustainable renewable energy to replace fossil fuels that have polluted the environment. Among many semiconductors, tungsten trioxide (WO3) is a promising semiconductor due to its narrow band gap (between 2.5 and 3 eV) and has stable chemical and physical properties. WO3 can absorb a broad range of the solar light spectrum but it is unable to produce hydrogen from water due to its lower conduction band position. However, the high oxidation power of the valence band; nontoxicity and resiliency towards harsh environments such as continuous contact to water and solar irradiation makes it a very promising photocatalyst. The current review article is a literature review on the basis of keywords including hydrogen production; tungsten-based semiconductors; heterojunction formation; band gap engineering, thermodynamics and visible light active photocatalysts. This review aims to summarize the current progress in WO3 based materials for photocatalytic H2 production along with the recent strategies employed for modifications of WO3 based materials for efficient photoactivity. Conventionally, the fundamentals along with the thermodynamics for photocatalytic hydrogen production based on heterogeneous photocatalysts have been discovered. The structural modifications of WO3 with band gap engineering for efficiency enhancement are systematically presented. Recent approaches such as coupling of semiconductors, band gap engineering, establishment of heterojunctions, Z-scheme and step-scheme development to improve the surface sensitization of a semiconductor have been thoroughly discussed. Co-doping semiconductors have proven to reduce the band gap notably and their outstanding electronic band position for visible light photocatalysis has been identified. Modification, doping or coupling of WO3 with a cocatalyst is necessary to change the band gap position. This review article summarizes progress of modifications of WO3 and discusses the future research direction for designing the most efficient WO3 composite towards hydrogen production.

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Visible Light‐Driven Hypochlorous Acid Synthesis Using a Sustainable and Cost‐Effective WO₃/CdS Photocatalyst without Precious Metals

Wang,

Han,

et al. 2024

ChemSusChem

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Compared with traditional electrolytic technology, directly using photocatalytic materials to produce hypochlorous acid from chlorine‐containing water undoubtedly has stronger low‐carbon and environmentally‐friendly characteristics. However, currently reported materials with photocatalytic chlorine production performance require precious metal Pt for catalysis, which undoubtedly greatly increases production costs. Therefore, developing new types of non‐precious metal‐based photocatalytic materials for efficient hypochlorous acid synthesis has significant implications. In this study, we demonstrate a novel breakthrough by showing that the WO3/CdS with a Z‐scheme structure effectively generated 3.54 mg/L of free chlorine in a 0.5 M NaCl solution, while also exhibiting spectral bactericidal and algal inhibition properties. The Z‐scheme structure can effectively prevent carrier recombination and improve photocatalytic efficiency. Therefore, this research provides a novel approach to photocatalytic antifouling and holds significant implications for the application of photocatalytic technology in the marine antifouling industry.

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CdS-dots decorated WO3 nanorods photocatalyst with highly ordered interfacial structure for enhanced photocatalytic activities via Z-scheme mechanism

Cited by 17 publications

References 55 publications

Hydrogen Environmental Benefits Depend on the Way of Production: An Overview of the Main Processes Production and Challenges by 2050

Hydrogen Environmental Benefits Depend on the Way of Production: An Overview of the Main Processes Production and Challenges by 2050

Recent advancements in strategies to improve performance of tungsten-based semiconductors for photocatalytic hydrogen production: a review

Visible Light‐Driven Hypochlorous Acid Synthesis Using a Sustainable and Cost‐Effective WO₃/CdS Photocatalyst without Precious Metals

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CdS-dots decorated WO3 nanorods photocatalyst with highly ordered interfacial structure for enhanced photocatalytic activities via Z-scheme mechanism

Cited by 17 publications

References 55 publications

Hydrogen Environmental Benefits Depend on the Way of Production: An Overview of the Main Processes Production and Challenges by 2050

Hydrogen Environmental Benefits Depend on the Way of Production: An Overview of the Main Processes Production and Challenges by 2050

Recent advancements in strategies to improve performance of tungsten-based semiconductors for photocatalytic hydrogen production: a review

Visible Light‐Driven Hypochlorous Acid Synthesis Using a Sustainable and Cost‐Effective WO3/CdS Photocatalyst without Precious Metals

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Visible Light‐Driven Hypochlorous Acid Synthesis Using a Sustainable and Cost‐Effective WO₃/CdS Photocatalyst without Precious Metals