Review on multi-dimensional assembled S-scheme heterojunction photocatalysts

Lu, Jiani; Gu, Shaonan; Li, Hongda; Wang, Yinan; Guo, Meng; Zhou, Guowei

doi:10.1016/j.jmst.2023.03.027

Cited by 89 publications

(7 citation statements)

References 216 publications

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“…separation of photogenerated electron-holes in the semiconductor with stable redox ability through the three methods of built-in electric eld, energy band bending, and electrostatic contact. 202,203 Zhang et al created CsPbBr 3 quantum dot/BiOBr nanosheets to reduce CO 2 with an electron consumption rate of 72.3 mol g −1 h −1 , which was 4.1 and 5.7 times higher than that of single CsPbBr 3 and BiOBr, respectively. 204 Xu et al also created TiO 2 /CsPbBr 3 S-type heterojunctions, which exhibited higher CO 2 reduction rates.…”

Section: Heterojunction Constructionmentioning

confidence: 99%

All-inorganic lead halide perovskites for photocatalysis: a review

Huang,

Yu,

et al. 2024

RSC Adv.

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Section: Heterojunction Constructionmentioning

confidence: 99%

All-inorganic lead halide perovskites for photocatalysis: a review

Huang,

Yu,

et al. 2024

RSC Adv.

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“…Recent advances in nanotechnology have promoted the use of nanomaterials to address water pollution and wastewater treatment problems. Nanoparticles (NPs) with dimensions under 100 nm offer unique chemical and physical perspectives for water treatment [16]. Zinc oxide (ZnO), a semiconductor with a bandgap of 3.37 eV and high excitation energy (60 meV) properties, has attracted attention recently due to its high electromobility, strong electrochemical or thermal stability, biocompatibility, and non-toxicity nature [17].…”

Section: Introductionmentioning

confidence: 99%

In-Situ Hydrothermal Fabrication of ZnO-Loaded GAC Nanocomposite for Efficient Rhodamine B Dye Removal via Synergistic Photocatalytic and Adsorptive Performance

Obayomi,

Lau,

Xie

et al. 2024

Preprint

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In this work, zinc oxide (ZnO)/ granular activated carbon (GAC) composites at different ZnO concentration (0.25M-ZnO@GAC, 0.5M-ZnO@GAC, and 0.75M-ZnO@GAC) were prepared by an in-situ hydrothermal method and demonstrated synergistic photocatalytic degradation and ad-sorption of Rhodamine B (RhB). The thermal stability, morphological structure, elemental com-position, crystallographic structure, and textural properties of developed catalysts were charac-terized by thermal gravimetric analysis (TGA/DTG), scanning electron microscopy equipped with energy dispersive-x-ray (SEM-EDS), x-ray diffraction (XRD), and Brunauer–Emmett–Teller (BET) analysis. Successful loading of ZnO onto GAC was confirmed by SEM-EDS and XRD analysis. The BET surface areas of GAC, 0.25M-ZnO@GAC, 0.5M-ZnO@GAC, and 0.75M-ZnO@GAC were 474 m2/g, 450 m2/g, 453 m2/g, and 421 m2/g, respectively. The decrease in GAC could be attributed to the successful loading of ZnO on the GAC surface. Notably, 0.5M-ZnO@GAC exhibited the best photocatalytic degradation efficiency of 82% and 97% under UV-A and UV-C light over 120 min, attributed to improved crystallinity and visible light absorption. The photocatalytic degradation parameters revealed that lowering the RhB concentration, raising the catalyst dosage and pH be-yond the point of zero charge (PZC) would favor the RhB degradation. Photocatalytic reusability was demonstrated over 5 cycles. Scavenger tests revealed that the hydroxyl radicals (•OH), su-peroxide radicals (O2−•), and photoinduced hole (h+) radicals play a major role during the RhB degradation process. Based on the TOC results, the RhB mineralization efficiency of 79.1% was achieved by 0.5M-ZnO@GAC. Additionally, GAC exhibited a strong adsorptive performance towards RhB with adsorption capacity and RhB removal of 487.1 mg/g and 99.5% achieved within 90 min equilibrium time. The adsorption characteristics were best described by pseu-do-second-order kinetics, suggesting chemical adsorption. This research offers a new strategy for the development of effective photocatalyst materials with potential for wider wastewater treat-ment applications.

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“…The synergistic effect of materials with different dimensions can solve the problems of the few reactive active sites, the easy aggregation of materials, and the slow electron transfer rate. Hence, the resulting S-scheme heterojunction has unique photochemical properties such as quantum effect, specific surface area, and chemical stability [46][47][48][49]. Most of the current reviews on S-scheme heterojunctions are based on semiconductor material, and a few reviews are on S-scheme heterojunctions prepared from nanomaterials of different dimensions.…”

Section: Introductionmentioning

confidence: 99%

S-Scheme Heterojunction Photocatalysts for CO2 Reduction

Li,

Cui,

Zhao

et al. 2024

Catalysts

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Photocatalytic technology, which is regarded as a green route to transform solar energy into chemical fuels, plays an important role in the fields of energy and environmental protection. An emerging S-scheme heterojunction with the tightly coupled interface, whose photocatalytic efficiency exceeds those of conventional type II and Z-scheme photocatalysts, has received much attention due to its rapid charge carrier separation and strong redox capacity. This review provides a systematic description of S-scheme heterojunction in the photocatalysis, including its development, reaction mechanisms, preparation, and characterization methods. In addition, S-scheme photocatalysts for CO2 reduction are described in detail by categorizing them as 0D/1D, 0D/2D, 0D/3D, 2D/2D, and 2D/3D. Finally, some defects of S-scheme heterojunctions are pointed out, and the future development of S-scheme heterojunctions is proposed.

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Review on multi-dimensional assembled S-scheme heterojunction photocatalysts

Cited by 89 publications

References 216 publications

All-inorganic lead halide perovskites for photocatalysis: a review

All-inorganic lead halide perovskites for photocatalysis: a review

In-Situ Hydrothermal Fabrication of ZnO-Loaded GAC Nanocomposite for Efficient Rhodamine B Dye Removal via Synergistic Photocatalytic and Adsorptive Performance

S-Scheme Heterojunction Photocatalysts for CO2 Reduction

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