Emerging S‐Scheme Photocatalyst

Advanced Materials, Journal Year: 2021, Volume and Issue: 34(11)

Published: Dec. 28, 2021

Photocatalysis is a green technology to use ubiquitous and intermittent sunlight. The emerging S-scheme heterojunction has demonstrated its superiority in photocatalysis. This article covers the state-of-the-art progress provides new insights into general designing criteria. It starts with challenges confronted by single photocatalyst from perspective of energy dissipation borrowing common behaviors dye molecule. Subsequently, other problems faced are summarized. Then viable solution for these construction heterojunctions. To overcome mistakes type-II Z-scheme heterojunctions, proposed underlying reaction mechanism Afterward, design principles four types heterojunctions suggested. Following this, direct characterization techniques testifying charge transfer presented. Finally, different photocatalytic applications Specifically, this work endeavors clarify critical understanding on curved Fermi level interface, which can help strengthen advance fundamental theories Moreover, current prospects critically discussed.

Language: Английский

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Photocatalytic CO2 reduction

Nature Reviews Methods Primers, Journal Year: 2023, Volume and Issue: 3(1)

Published: Aug. 10, 2023

Language: Английский

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Construction of 2D S‐Scheme Heterojunction Photocatalyst

Advanced Materials, Journal Year: 2023, Volume and Issue: 36(8)

Published: Nov. 22, 2023

Abstract Semiconductor photocatalytic technology holds immense promise for converting sustainable solar energy into chemically storable energy, with significant applications in the realms of and environment. However, inherent issue rapid recombination photogenerated electrons holes hinders performance single photocatalysts. To overcome this challenge, construction 2D S‐scheme heterojunction photocatalysts emerges as an effective strategy. The deliberate design dimensionality ensures a substantial interfacial area; while, charge transfer mechanism facilitates efficient separation maximizes redox capabilities. This review commences fresh perspective on heterojunctions, followed by comprehensive exploration preparation methods characterization techniques. Subsequently, recent advancements are summarized. Notably, behind activity enhancement is elucidated. Finally, prospects development presented.

Language: Английский

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S-scheme heterojunction photocatalysts for CO2 reduction

Matter, Journal Year: 2022, Volume and Issue: 5(12), P. 4187 - 4211

Published: Dec. 1, 2022

Language: Английский

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Cooperative Coupling of H₂O₂ Production and Organic Synthesis over a Floatable Polystyrene‐Sphere‐Supported TiO₂/Bi₂O₃ S‐Scheme Photocatalyst

Advanced Materials, Journal Year: 2022, Volume and Issue: 34(38)

Published: Aug. 9, 2022

Cooperative coupling of photocatalytic H2 O2 production with organic synthesis has an expansive perspective in converting solar energy into storable chemical energy. However, traditional powder photocatalysts suffer from severe agglomeration, limited light absorption, poor gas reactant accessibility, and reusable difficulty, which greatly hinders their large-scale application. Herein, floatable composite are synthesized by immobilizing hydrophobic TiO2 Bi2 O3 on lightweight polystyrene (PS) spheres via hydrothermal photodeposition methods. The not only transparent, but also upgrade the contact between reactants photocatalysts. Thus, step-scheme (S-scheme) /Bi2 photocatalyst exhibits a drastically enhanced yield 1.15 mm h-1 decent furfuryl alcohol conversion to furoic acid synchronously. Furthermore, S-scheme mechanism dynamics systematically investigated situ irradiated X-ray photoelectron spectroscopy femtosecond transient absorption spectrum analyses. In Fourier transform infrared density functional theory calculations reveal evolution. ingenious design furnishes insight maximizing reaction kinetics provides new route for highly efficient heterogeneous catalysis.

Language: Английский

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Hierarchically Porous ZnO/g-C₃N₄ S-Scheme Heterojunction Photocatalyst for Efficient H₂O₂ Production

Langmuir, Journal Year: 2021, Volume and Issue: 37(48), P. 14114 - 14124

Published: Nov. 22, 2021

The design of photocatalysts with hierarchical pore sizes is an effective method to improve mass transport, enhance light absorption, and increase specific surface area. Moreover, the construction a heterojunction at interface two semiconductor suitable band positions plays crucial role in separating transporting charge carriers. Herein, ZIF-8 urea are used as precursors prepare hierarchically porous ZnO/g-C3N4 S-scheme through two-step calcination method. This photocatalyst shows high activity toward photocatalytic H2O2 production, which 3.4 5.0 times higher than that pure g-C3N4 ZnO, respectively. mechanism transfer separation within studied by Kelvin probe, situ irradiated X-ray photoelectron spectroscopy (ISI-XPS), electron paramagnetic resonance (EPR). research provides idea designing pores efficient hydrogen peroxide production.

Language: Английский

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TiO₂/FePS₃ S‐Scheme Heterojunction for Greatly Raised Photocatalytic Hydrogen Evolution

Advanced Energy Materials, Journal Year: 2022, Volume and Issue: 12(46)

Published: Oct. 6, 2022

Abstract The aggravating extreme climate changes and natural disasters stimulate the exploration of low‐carbon/zero‐carbon alternatives to traditional carbon‐based fossil fuels. Solar‐to‐hydrogen (STH) transformation is considered as appealing route convert renewable solar energy into carbon‐free hydrogen. Restricted by low efficiency high cost noble metal cocatalysts, high‐performance cost‐effective photocatalysts are required realize realistic STH transformation. Herein, 2D FePS 3 (FPS) nanosheets anchored with TiO 2 nanoparticles (TiO /FePS ) synthesized tested for photocatalytic hydrogen evolution reaction. With integration FPS, H ‐evolution rate on radically increased ≈1686%, much faster than that alone. origin greatly raised activity revealed theoretical calculations various advanced characterizations, such transient‐state photoluminescence spectroscopy/surface photovoltage spectroscopy, in situ atomic force microscopy combined Kelvin probe (AFM‐KPFM), X‐ray photoelectron spectroscopy (XPS), synchrotron‐based absorption near edge structure. Especially, AFM‐KPFM XPS together confirm electron transport pathway light illumination, unveiling efficient separation/transfer charge carrier step‐scheme heterojunction. This work sheds designing fabricating novel material‐based S‐scheme heterojunctions photocatalysis.

Language: Английский

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ZnIn2S4-based photocatalysts for photocatalytic hydrogen evolution via water splitting

Coordination Chemistry Reviews, Journal Year: 2022, Volume and Issue: 475, P. 214898 - 214898

Published: Oct. 22, 2022

Language: Английский

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ZnO/COF S-scheme heterojunction for improved photocatalytic H2O2 production performance

Chemical Engineering Journal, Journal Year: 2022, Volume and Issue: 444, P. 136584 - 136584

Published: April 25, 2022

Language: Английский

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Semiconductor photocatalysts: A critical review highlighting the various strategies to boost the photocatalytic performances for diverse applications

Advances in Colloid and Interface Science, Journal Year: 2022, Volume and Issue: 311, P. 102830 - 102830

Published: Dec. 26, 2022

Language: Английский

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