Recent advances and perspectives for solar-driven water splitting using particulate photocatalysts

Chemical Society Reviews, Journal Year: 2022, Volume and Issue: 51(9), P. 3561 - 3608

Published: Jan. 1, 2022

Recent advances in particulate photocatalytic water splitting are reviewed and the pioneering works scalable H 2 evolution via OWS presented.

Language: Английский

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2D Graphitic Carbon Nitride for Energy Conversion and Storage

Advanced Functional Materials, Journal Year: 2021, Volume and Issue: 31(34)

Published: June 19, 2021

Abstract Graphitic carbon nitride (g‐C 3 N 4 ) have attracted great attention in the field of energy conversion and storage due to its unique layered structure, tunable bandgap, metal‐free characteristic, high physicochemical stability, easy accessibility. 2D g‐C nanosheets features short charge/mass transfer path, abundant reactive sites functionalization, which are beneficial optimizing their performance different fields. However, reviews comprehensive applications for rare. Herein, this review first introduces properties bulk nanosheets, then summarizes synthetic strategies detail, such as thermal oxidation etching, chemical exfoliation, ultrasonication‐assisted liquid phase vapor deposition, others. Emphasis is focused on rational design development diversified storage, including photocatalytic H 2 evolution, CO reduction, electrocatalytic O alkali‐metal ion batteries, lithium‐metal lithium–sulfur metal‐air supercapacitors. Finally, current challenges perspectives discussed.

Language: Английский

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Unique g-C3N4/PDI-g-C3N4 homojunction with synergistic piezo-photocatalytic effect for aquatic contaminant control and H2O2 generation under visible light

Applied Catalysis B Environment and Energy, Journal Year: 2021, Volume and Issue: 303, P. 120929 - 120929

Published: Nov. 15, 2021

Language: Английский

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Piezo‐Photocatalysis over Metal–Organic Frameworks: Promoting Photocatalytic Activity by Piezoelectric Effect

Advanced Materials, Journal Year: 2021, Volume and Issue: 33(51)

Published: Oct. 13, 2021

The built-in electric field can be generated in the piezoelectric materials under mechanical stress. resulting effect is beneficial to charge separation photocatalysis. Meanwhile, stress usually gives rise accelerated mass transfer and enhanced catalytic activity. Unfortunately, it remains a challenge differentiate contribution of these two factors performance. Herein, for first time, isostructural metal-organic frameworks (MOFs), i.e., UiO-66-NH2 (Zr) (Hf), are adopted piezo-photocatalysis. Both MOFs, featuring same structures except diverse Zr/Hf-oxo clusters, possess distinctly different properties. Strikingly, (Hf) exhibits ≈2.2 times activity compared with that simultaneous light ultrasonic irradiation, though both MOFs display similar photocatalytic H2 production without irradiation. Given their pore features behaviors, difference unambiguously assignable effect. As result, contributions piezo-photocatalysis clearly distinguished owing stronger property (Hf).

Language: Английский

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Construction of full solar-spectrum available S-scheme heterojunction for boosted photothermal-assisted photocatalytic H2 production

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 459, P. 141549 - 141549

Published: Jan. 24, 2023

Language: Английский

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Controllable morphology CoFe2O4/g-C3N4 p-n heterojunction photocatalysts with built-in electric field enhance photocatalytic performance

Applied Catalysis B Environment and Energy, Journal Year: 2022, Volume and Issue: 306, P. 121107 - 121107

Published: Jan. 19, 2022

Language: Английский

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Coupled adsorption and photocatalysis of g-C3N4 based composites: Material synthesis, mechanism, and environmental applications

Chemical Engineering Journal, Journal Year: 2022, Volume and Issue: 453, P. 139755 - 139755

Published: Oct. 17, 2022

Language: Английский

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g‐C₃N₄‐Based 2D/2D Composite Heterojunction Photocatalyst

Small Structures, Journal Year: 2021, Volume and Issue: 2(12)

Published: Sept. 16, 2021

Employing semiconductor photocatalysis to transform solar energy into chemical provides a practicable strategy for the alleviation of and environmental crisis. Graphitic carbon nitride (g‐C 3 N 4 ) is popular 2D photocatalyst with numerous advantages, such as visible light response, low cost, high stability. However, single g‐C displays poor performance due fast recombination photogenerated electrons holes. To improve this limitation, many research works have focused on construction ‐based 2D/2D heterojunction photocatalysts by hybridizing other materials. The intimate face‐to‐face contact in offers large area plentiful channels migration separation charge carriers. Furthermore, inherits strengths structure, including specific surface area, abundant adsorption sites active sites. Herein, preparation, mechanism, application are reviewed. Three common preparation methods summarized, solid phase reaction, situ growth, electrostatic self‐assembly. Various photocatalytic mechanisms discussed, traditional type‐II, Z‐scheme S‐scheme mechanisms. A series applications environment fields illustrated. Finally, future directions development proposed.

Language: Английский

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The Mechanism of Piezocatalysis: Energy Band Theory or Screening Charge Effect?

Angewandte Chemie, Journal Year: 2021, Volume and Issue: 134(6)

Published: Oct. 8, 2021

Piezocatalysis, a newly emerging catalysis technology that relies on the piezopotential and piezoelectric properties of catalysts, is attracting unprecedented research enthusiasm for applications in energy conversion, organic synthesis, environmental remediation. Despite rapid development past three years, mechanism piezocatalysis still under debate. A fundamental understanding working principles this should enable future design optimization piezocatalysts. Herein, we provide an overview two popular theories used to explain observed piezocatalysis: band theory screening charge effect. comprehensive discussion clarification differences, relevance, evidence, contradiction mechanisms are provided. Finally, challenges perspectives mechanistic studies highlighted. Hopefully, Review can help readers gain better its application their own research.

Language: Английский

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Directing Charge Transfer in a Chemical‐Bonded BaTiO₃@ReS₂ Schottky Heterojunction for Piezoelectric Enhanced Photocatalysis

Advanced Materials, Journal Year: 2022, Volume and Issue: 34(29)

Published: May 13, 2022

The piezo-assisted photocatalysis system, which can utilize solar energy and mechanical simulteneously, is promising but still challenging in the environmental remediation field. In this work, a novel metal-semiconductor BaTiO3 @ReS2 Schottky heterostructure designed it shows high-efficiency on photocatalytic molecular oxygen activation. By combining experiment calculation results, distorted metal-phase ReS2 nanosheets are found to be closely anchored surface of nanorods, through interfacial ReO covalent bonds. not only forms electron-transfer channels also exhibits enhanced activation capacity, helpful produce more superoxide radicals. polarization field induced by piezoelectric lower barrier thus reduce transfer resistance photogenerated electrons directing . As result synergy effect between two components, untrahigh activity for degradation pollutants with an apparent rate constant 0.133 min-1 photocatalysis, 16.6 2.44 times as that piezocatalysis respectively. This performance higher than most reported -based systems. work paves way design materials using green energies nature.

Language: Английский

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