Charge Relays via Dual Carbon‐Actions on Nanostructured BiVO₄ for High Performance Photoelectrochemical Water Splitting

Advanced Functional Materials, Journal Year: 2022, Volume and Issue: 32(13)

Published: Jan. 31, 2022

Abstract Photoelectrochemical water splitting based on nanostructured bismuth vanadate (BiVO 4 ) can be a promising strategy to produce low‐cost and green H 2 replace fossil fuels realize carbon neutrality. Herein, simple chemical way in situ doping into BiVO crystalline structure is designed obtained carbon‐doped , namely C‐BiVO improve the electronic conductivity of . In addition, introduction synthesized quantum dots (CQDs) as co‐catalyst, immobilizes CQDs onto nanosheet acquires optimized /CQDs heterogeneous structure, which not only boosts light absorption, but also enhances separation transfer photo‐generated charges. Stemming from dual actions, as‐prepared photoanode exhibits an excellent photocurrent density 4.83 mA cm −2 at 1.23 V versus RHE without use any hole scavengers. To assure practical application sensitive photocatalyst, polyaniline layer electroplated catalyst conducting, electroactive, protective sustain remarkable long‐term 2.75 for 9 hours. This work suggests that proposed low‐cost, environmentally friendly actions modify photocatalyst achieve production

Language: Английский

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Multiscale design of 3D metal–organic frameworks (M−BTC, M: Cu, Co, Ni) via PLAL enabling bifunctional electrocatalysts for robust overall water splitting

Chemical Engineering Journal, Journal Year: 2022, Volume and Issue: 446, P. 137045 - 137045

Published: May 18, 2022

Language: Английский

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Oxygen vacancy–based metal oxides photoanodes in photoelectrochemical water splitting

Materials Today Sustainability, Journal Year: 2022, Volume and Issue: 18, P. 100118 - 100118

Published: Feb. 5, 2022

Language: Английский

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In Situ Grown Co‐Based Interstitial Compounds: Non‐3d Metal and Non‐Metal Dual Modulation Boosts Alkaline and Acidic Hydrogen Electrocatalysis

Small, Journal Year: 2021, Volume and Issue: 18(9)

Published: Dec. 16, 2021

Interfacial engineering and elemental doping are the two parameters to enhance catalytic behavior of cobalt nitrides for alkaline hydrogen evolution reaction (HER). However, simultaneously combining these improve HER properties in media is rarely reported also remains challenging acidic media. Herein, it demonstrated that high-valence non-3d metal non-metal integration can achieve Co-based nitride/oxide interstitial compound phase boundaries on stainless steel mesh (denoted Mo-Co5.47 N/N-CoO) efficient Density functional theory (DFT) calculations show unique structure does not only realize multi-active sites, enhanced water dissociation kinetics, low adsorption free energy media, but enhances positive charge density ions (H+ ) effectively allow H+ receive electrons from catalysts surface toward promoting As a result, as-prepared N/N-CoO demands overpotential -28 mV@10 mA cm-2 an medium, superior commercial Pt/C at current > 44 medium. This work paves useful strategy design cobalt-based electrocatalysts beyond.

Language: Английский

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Unveiling the promotion of accelerated water dissociation kinetics on the hydrogen evolution catalysis of NiMoO4 nanorods

Journal of Energy Chemistry, Journal Year: 2021, Volume and Issue: 67, P. 805 - 813

Published: Nov. 26, 2021

Language: Английский

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Emerging Surface, Bulk, and Interface Engineering Strategies on BiVO₄ for Photoelectrochemical Water Splitting

Small, Journal Year: 2021, Volume and Issue: 18(10)

Published: Dec. 22, 2021

The photoelectrochemical (PEC) cell that collects and stores abundant sunlight to hydrogen fuel promises a clean renewable pathway for future energy needs challenges. Monoclinic bismuth vanadate (BiVO4 ), having an earth-abundancy, nontoxicity, suitable optical absorption, ideal n-type band position, has been in the limelight decades. BiVO4 is potential photoanode candidate due its favorable outstanding features like moderate bandgap, visible light activity, better chemical stability, cost-effective synthesis methods. However, suffers from rapid recombination of photogenerated charge carriers have impeded further improvements PEC performances stability. This review presents close look at emerging surface, bulk, interface engineering strategies on photoanode. First, effective approach surface functionalization via different cocatalysts improve kinetics discussed. Second, state-of-the-art methodologies such as nanostructuring, defect engineering, doping enhance absorption transport bulk are reviewed. Third, heterostructuring separation introduced. Lastly, perspectives foremost challenges some motivating outlooks encourage research progress this frontier offered.

Language: Английский

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CeO2 as an “electron pump” to boost the performance of Co4N in electrocatalytic hydrogen evolution, oxygen evolution and biomass oxidation valorization

Applied Catalysis B Environment and Energy, Journal Year: 2023, Volume and Issue: 325, P. 122364 - 122364

Published: Jan. 3, 2023

Language: Английский

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Highly accessible and dense surface single metal FeN₄ active sites for promoting the oxygen reduction reaction

Energy & Environmental Science, Journal Year: 2022, Volume and Issue: 15(6), P. 2619 - 2628

Published: Jan. 1, 2022

We boost the ORR performance of Fe–N–C electrocatalysts in acids by engineering highly accessible and dense surface single metal FeN 4 active sites.

Language: Английский

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Charge separation via synergy of homojunction and electrocatalyst in BiVO4 for photoelectrochemical water splitting

Applied Catalysis B Environment and Energy, Journal Year: 2023, Volume and Issue: 334, P. 122865 - 122865

Published: May 9, 2023

Language: Английский

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Directional regulating dynamic equilibrium to continuously update electrocatalytic interface for oxygen evolution reaction

Chemical Engineering Journal, Journal Year: 2021, Volume and Issue: 431, P. 134040 - 134040

Published: Dec. 9, 2021

Language: Английский

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