Localized Building Titania–Graphene Charge Transfer Interfaces for Enhanced Photocatalytic Performance

Luo, Jianqiang; Wang, Zhijian; Jiang, Hongxia; Liu, Shujuan; Xiong, Fengqiang; Ma, Jianguo

doi:10.1021/acs.langmuir.0c00297

Cited by 12 publications

(5 citation statements)

References 34 publications

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“…In 1972, Fujishima and Honda for the first time demonstrated titanium oxide as a photocatalyst to split water into molecular H 2 and O 2 1 . Subsequently, many other photocatalysts have been developed, such as metal oxides, 2,3 metal chalcogenides, 4,5 metal nitrides, 6,7 metal halides, 8 and so on. Among which, halide perovskite has recently been emerging as a promising photocatalyst because of its remarkable opto‐electronic properties, including optimal band structure, long charge carrier lifetime, and high photoluminescence (PL) quantum yield.…”

Section: Introductionmentioning

confidence: 99%

Halide perovskite composites for photocatalysis: A mini review

Luo¹,

Zhang²,

Yang

et al. 2021

EcoMat

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Halide perovskites have attracted increasing scientific interests for photocatalysis because of their remarkable opto‐electronic properties, such as optimal band structures, long charge carrier lifetimes, high photoluminescence quantum yields, and so on. However, pure halide perovskites generally face problems of low stability, lack of active sites, and ineffective extraction of carriers, which limit their applications in photocatalytic reactions. To improve the photocatalytic activity and stability, halide perovskites are composited with other materials. Herein in this mini review, we summarize the recent progresses on the design and development of halide perovskite composites for various photocatalytic reactions including photocatalytic CO2 reduction reaction, photocatalytic hydrogen evolution reaction, photocatalytic pollutant degradation reaction, and so on. Finally, an outlook of halide perovskite for photocatalysis is provided to point up the future challenges and the possible solutions.

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Section: Introductionmentioning

confidence: 99%

Halide perovskite composites for photocatalysis: A mini review

Luo¹,

Zhang²,

Yang

et al. 2021

EcoMat

Self Cite

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“…Some studies indicated an exponential increase in the uptake of cationic pollutants on increasing the oxygen functionalities on graphene surfaces [81]. In a recent study, the graphene composites exhibited high photocatalytic activity on adding titania, hence might be suitable in degradation of dyes and organic pollutants of wastewater [82].…”

Section: Graphenementioning

confidence: 99%

Carbon Nanomaterials for Wastewater Treatment

et al. 2021

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The research progress made in recent years in removal of organic-inorganic pollutants from wastewater using various types of carbon materials as adsorbents such as carbon nanotubes, carbon nanofibers, graphenes, graphitic carbon nitride, fullerene, activated carbon spheres, and carbon quantum dots is reviewed. These carbon nanomaterials with hierarchical structures are efficient and economical adsorbents. The techniques of metal impregnation and doping help to control the porosity and surface area of nanomaterials. Electrostatic forces, p-p and p-e interactions, van der Waals weak forces, and oxygen-containing groups are considered responsible for the removal of pollutants from wastewater. The carbon nanomaterial-based photocatalysts are applied successfully in decomposition of persistent dyes under visible light. Fe 3 O 4 magnetic material is employed as recyclable adsorbent after treatment of wastewater. Freundlich and Langmuir models are found more suitable to calculate the adsorption efficiency and adsorption kinetics of pollutants. Criteria and properties of carbon nanomaterials are discussed that might play a significant role in remediation of wastewater.

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“…By finely tuning the surface properties and the morphology of the titanate nanostructures, it is possible to achieve a more effective spatial separation of photo-generated electron-hole pairs, thus reducing recombination rates. The selection of graphene oxide (GO) or reduced graphene oxide (rGO) as the component in the composite influences the electronic properties of the nanocomposite, including band alignment and charge carrier dynamics [27,28]. Through strategic engineering of these nanocomposites, researchers aim to harness the full potential of visible light absorption, thereby overcoming the inherent limitations associated with the wide bandgap of titanate.…”

Section: Introductionmentioning

confidence: 99%

Efficient Photocatalytic Core–Shell Synthesis of Titanate Nanowire/rGO

Ye,

Tian,

Gao

et al. 2024

Catalysts

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Wide bandgap semiconductor-based photocatalysts are usually limited by their low solar energy conversion efficiency due to their limited absorption solar wavelength, their rapid surface recombination of the photogenerated electron–hole pairs, and their low charge-carrier mobility. Here, we report a novel stepwise solution synthesis for achieving a new photocatalytic core–shell consisting of a titanate nanowire/reduced graphene oxide shell (or titanate/rGO) 1D-nanocomposite. The new core–shell nanocomposite maximized the specific surface area, largely reduced the charge transfer resistance and reaction energy barrier, and significantly improved the absorption of visible light. The core–shell nanocomposites’ large on/off current ratio and rapid photo-responses boosted the photocurrent by 30.0%, the photocatalysis rate by 50.0%, and the specific surface area by 16.4% when compared with the results for the pure titanate nanowire core. Our numerical simulations support the effective charge separation on the new core–shell nanostructure, which can help further advance the novel photocatalysis.

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Localized Building Titania–Graphene Charge Transfer Interfaces for Enhanced Photocatalytic Performance

Cited by 12 publications

References 34 publications

Halide perovskite composites for photocatalysis: A mini review

Halide perovskite composites for photocatalysis: A mini review

Carbon Nanomaterials for Wastewater Treatment

Efficient Photocatalytic Core–Shell Synthesis of Titanate Nanowire/rGO

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