Z‐Scheme Photocatalytic Systems for Carbon Dioxide Reduction: Where Are We Now?

Angewandte Chemie International Edition, Journal Year: 2020, Volume and Issue: 59(51), P. 22894 - 22915

Published: Feb. 3, 2020

Transforming CO2 into fuels by utilizing sunlight is promising to synchronously overcome global warming and energy-supply issues. It crucial design efficient photocatalysts with intriguing features such as robust light-harvesting ability, strong redox potential, high charge-separation, excellent durability. Hitherto, a single-component photocatalyst incapable simultaneously meet all these criteria. Inspired natural photosynthesis, constructing artificial Z-scheme provides facile way conquer bottlenecks. In this review, we firstly introduce the fundamentals of photocatalytic reduction systems. Thereafter discuss state-of-the-art reduction, whereby special attention placed on predominant factors that affect photoactivity. Additionally, further modifications are important for photocatalysis reviewed.

Language: Английский

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All-Solid-State Z-Scheme α-Fe2O3/Amine-RGO/CsPbBr3 Hybrids for Visible-Light-Driven Photocatalytic CO2 Reduction

Chem, Journal Year: 2020, Volume and Issue: 6(3), P. 766 - 780

Published: Feb. 3, 2020

Language: Английский

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Regulating Local Electron Density of Iron Single Sites by Introducing Nitrogen Vacancies for Efficient Photo‐Fenton Process

Angewandte Chemie International Edition, Journal Year: 2021, Volume and Issue: 60(39), P. 21261 - 21266

Published: Aug. 9, 2021

Abstract The activity of heterogeneous photocatalytic H 2 O activation in Fenton‐like processes is closely related to the local electron density reaction centre atoms. However, recombination electron‐hole pairs arising from random charge transfer greatly restricts oriented delivery active center. Here we show a defect engineered iron single atom photocatalyst (Fe 1 ‐N v /CN, Fe atoms dispersed on carbon nitride with abundant nitrogen vacancies) for under visible light irradiation. Based DFT calculations and transient absorption spectroscopy results, vacancies serve as trap sites, which can directionally drive electrons concentrate formation highly concentrated at sites significantly improves conversion efficiency. Therefore, optimized catalyst exhibiting higher ciprofloxacin degradation activity, was up 18 times that pristine CN.

Language: Английский

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Construction of core-shell heterojunction regulating α-Fe2O3 layer on CeO2 nanotube arrays enables highly efficient Z-scheme photoelectrocatalysis

Applied Catalysis B Environment and Energy, Journal Year: 2020, Volume and Issue: 276, P. 119138 - 119138

Published: May 21, 2020

Language: Английский

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Visually resolving the direct Z-scheme heterojunction in CdS@ZnIn2S4 hollow cubes for photocatalytic evolution of H2 and H2O2 from pure water

Applied Catalysis B Environment and Energy, Journal Year: 2021, Volume and Issue: 293, P. 120213 - 120213

Published: April 7, 2021

Language: Английский

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Photocatalytic O2 activation and reactive oxygen species evolution by surface B-N bond for organic pollutants degradation

Applied Catalysis B Environment and Energy, Journal Year: 2022, Volume and Issue: 310, P. 121329 - 121329

Published: March 19, 2022

Language: Английский

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Constructing hierarchical ZnIn2S4/g-C3N4 S-scheme heterojunction for boosted CO2 photoreduction performance

Chemical Engineering Journal, Journal Year: 2022, Volume and Issue: 437, P. 135153 - 135153

Published: Feb. 9, 2022

Language: Английский

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Boosting Hydrogen Evolution Performance of a CdS-Based Photocatalyst: In Situ Transition from Type I to Type II Heterojunction during Photocatalysis

ACS Catalysis, Journal Year: 2022, Volume and Issue: 12(16), P. 10115 - 10126

Published: Aug. 4, 2022

The heterojunction in photocatalysis establishes an internal electric field between the semiconductors, which is one of effective methods for enhancing separation photogenerated carriers semiconductors. Herein, a strategy rationally proposed, performed situ to transform hybrid photocatalyst composed Ni–Co Prussian blue analogue (PBA) and CdS (CP) into another more active consisting NiS (CN) during sulfur sacrificial reagent. coupled component on n-type converted from PBA p-type process, thus constructing p–n achieving good photocatalytic hydrogen evolution reaction (HER) performance. Moreover, carrier transfer mechanism also transition type I CP II CN HER supported by surface photovoltage transient absorption spectroscopy. CP-2 reagent has high amount 176.6 μmol, 13.9 times higher than that pure CdS. Overall, this work develops conversion expanding photocatalysts their

Language: Английский

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Heterojunction Photocatalysts Based on 2D Materials: The Role of Configuration

Advanced Sustainable Systems, Journal Year: 2020, Volume and Issue: 4(9)

Published: July 14, 2020

Abstract Semiconductor photocatalysis is currently attracting tremendous attention as it holds great potential to address the issues of energy shortage and environmental pollution. 2D materials are excellent candidates for owing their attractive structural electronic properties. However, practical applications still hindered due limitations, such fast electron–hole recombination poor redox ability, both which lead low efficiency photocatalytic reactions. Constructing a heterojunction most widely used strategy solve these problems. In particular, heterojunctions composed interfaced with other semiconductors different dimensionalities can integrate respective advantages mitigate drawbacks each component. Hence, this review focuses on recent developments in rational design material‐based photocatalysts configurations. The synthetic strategies, physicochemical properties, component functions, mechanisms, systematically summarized. Emphasis placed correlations between performance configuration. Finally, ongoing challenges directions future development also proposed.

Language: Английский

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Direct Z-scheme CeO2@LDH core–shell heterostructure for photodegradation of Rhodamine B by synergistic persulfate activation

Journal of Hazardous Materials, Journal Year: 2020, Volume and Issue: 408, P. 124908 - 124908

Published: Dec. 19, 2020

Language: Английский

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