Dual S-scheme ZnO–g-C3N4–CuO heterosystem: a potential photocatalyst for H2 evolution and wastewater treatment

Ahmad, Irshad; Shukrullah, Shazia; Naz, Muhammad Yasin; Bhatti, Haq Nawaz

doi:10.1039/d2re00576j

Cited by 9 publications

(2 citation statements)

References 70 publications

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“…The optical properties of these composite films were investigated by UV-vis DRS. As illustrated in Figure 5a, both ZnO and Bi 2 S 3 sensitization considerably broadened the spectrum of light absorption [47]. Notably, the Bi 2 S 3 film with co-modification of ZnO and Bi 2 S 3 exhibited superior visible light harvesting capabilities compared to the single Bi 2 S 3 deposition, potentially due to the modulation of the bandgap by the sensitizer.…”

Section: Structural Characterizationmentioning

confidence: 99%

In Situ Decoration of Bi2S3 Nanosheets on Zinc Oxide/Cellulose Acetate Composite Films for Photodegradation of Dyes under Visible Light Irradiation

Dan,

Xu,

Jian

et al. 2023

Molecules

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A novel Bi2S3-zinc oxide/cellulose acetate composite film was prepared through a blending-wet phase conversion and in situ precipitate method. The results revealed that the incorporation of Bi2S3 in the film increased the cavity density and uniformity, which provided additional space for the growth of active species and improved the interaction between dye pollutants and active sites. Zinc oxide acted as a mediator to facilitate the separation of electron–hole pairs effectively preventing their recombination, thus reducing the photo-corrosion of Bi2S3. As a result, the Bi2S3-ZnO/CA composite film exhibited favorable photocatalytic activity in the degradation of various dyes. Additionally, the composite film displayed effortless separation and recovery without the need for centrifugation or filtration, while maintaining its exceptional catalytic performance even after undergoing various processes.

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Section: Structural Characterizationmentioning

confidence: 99%

In Situ Decoration of Bi2S3 Nanosheets on Zinc Oxide/Cellulose Acetate Composite Films for Photodegradation of Dyes under Visible Light Irradiation

Dan,

Xu,

Jian

et al. 2023

Molecules

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“…Recently, a simple solution combustion approach was applied to design a ternary ZnO-g-C 3 N 4 -CuO heterojunction photocatalyst for degrading MB dye and Rh B dye under visible light [206]. Compared to ZnO, ZnO-CuO, and ZnO-g-C 3 N 4 , the ternary ZnO-g-C 3 N 4 -CuO heterojunction composite showed higher degradation performance, which is attributed to the dual S-scheme at the interface of the ZnO-g-C 3 N 4 -CuO heterojunction composite.…”

Section: Formation Of G-c 3 N 4 /Zno-based S-scheme Heterojunction Ph...mentioning

confidence: 99%

Graphitic Carbon Nitride/Zinc Oxide-Based Z-Scheme and S-Scheme Heterojunction Photocatalysts for the Photodegradation of Organic Pollutants

Panthi,

Park

2023

IJMS

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Graphitic carbon nitride (g-C3N4), a metal-free polymer semiconductor, has been recognized as an attractive photocatalytic material for environmental remediation because of its low band gap, high thermal and photostability, chemical inertness, non-toxicity, low cost, biocompatibility, and optical and electrical efficiency. However, g-C3N4 has been reported to suffer from many difficulties in photocatalytic applications, such as a low specific surface area, inadequate visible-light utilization, and a high charge recombination rate. To overcome these difficulties, the formation of g-C3N4 heterojunctions by coupling with metal oxides has triggered tremendous interest in recent years. In this regard, zinc oxide (ZnO) is being largely explored as a self-driven semiconductor photocatalyst to form heterojunctions with g-C3N4, as ZnO possesses unique and fascinating properties, including high quantum efficiency, high electron mobility, cost-effectiveness, environmental friendliness, and a simple synthetic procedure. The synergistic effect of its properties, such as adsorption and photogenerated charge separation, was found to enhance the photocatalytic activity of heterojunctions. Hence, this review aims to compile the strategies for fabricating g-C3N4/ZnO-based Z-scheme and S-scheme heterojunction photocatalytic systems with enhanced performance and overall stability for the photodegradation of organic pollutants. Furthermore, with reference to the reported system, the photocatalytic mechanism of g-C3N4/ZnO-based heterojunction photocatalysts and their charge-transfer pathways on the interface surface are highlighted.

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Silver and yttrium co-doped ZnO nanoparticles as a potential water splitting photocatalyst for the H2 evolution reaction

Ullah,

Shabir,

Rasheed

et al. 2023

J Sol-Gel Sci Technol

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Dual S-scheme ZnO–g-C₃N₄–CuO heterosystem: a potential photocatalyst for H₂ evolution and wastewater treatment

Abstract: A ZnO–g-C3N4–CuO catalyst prepared by an ecofriendly solution combustion process is used for H2 evolution. The mechanism of H2 evolution over ZnO–g-C3N4–CuO is described under visible light illumination.

Cited by 9 publications

References 70 publications

In Situ Decoration of Bi2S3 Nanosheets on Zinc Oxide/Cellulose Acetate Composite Films for Photodegradation of Dyes under Visible Light Irradiation

In Situ Decoration of Bi2S3 Nanosheets on Zinc Oxide/Cellulose Acetate Composite Films for Photodegradation of Dyes under Visible Light Irradiation

Graphitic Carbon Nitride/Zinc Oxide-Based Z-Scheme and S-Scheme Heterojunction Photocatalysts for the Photodegradation of Organic Pollutants

Silver and yttrium co-doped ZnO nanoparticles as a potential water splitting photocatalyst for the H2 evolution reaction

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