Hierarchical core-shell Ce-doped NiO@MoO2 architecture with Ni 3d-band center modulation for enhanced high-current-density oxygen evolution

Applied Catalysis B Environment and Energy, Journal Year: 2024, Volume and Issue: 358, P. 124455 - 124455

Published: July 27, 2024

Language: Английский

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Core@Shell Heterostructured NiMoP_x@Ni₅P₄ Nanorod Arrays Promoting Direct Electro‐Oxidation of Methanol and Hydrogen Evolution under Industry Conditions

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: June 10, 2024

Abstract Methanol‐electrooxidation‐reaction (MOR) to value‐added formate is a promising alternative water oxidation for cost‐efficient hydrogen production. It generally proposed that the MOR kinetics on Ni‐based catalysts are highly limited by transition rate of Ni(OH) 2 /NiOOH. Yet, how define catalyst following direct pathway without Ni 2+ /Ni 3+ remains challenging. Herein, core@shell heterostructured NiMoP x @Ni 5 P 4 developed selectively promote at large current density (> 500 mA cm −2 ). A series operando spectroscopic studies reveal negligible formation NiOOH with 1.0 m methanol in wide potential range, where predominant. Theoretical calculations demonstrate Ni‐P site favors adsorption * CH 3 OH over while heterostructure contributes significantly reduced energy barrier OCH → , hence promoting along NiOOH. Moreover, further study suggests also performs well toward cathodic evolution reaction (HER). As result, an electrode pair //NiMoP employed enable concurrent MOR/HER electrolysis 1.81 V yield formate/H FEs ca. 90/100% and long‐term (100‐h) sustainability under industrial conditions (6.0 KOH, 65 °C).

Language: Английский

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Constructing Pr-doped CoOOH catalytic sites for efficient electrooxidation of 5-hydroxymethylfurfural

Journal of Energy Chemistry, Journal Year: 2024, Volume and Issue: 100, P. 234 - 244

Published: Aug. 30, 2024

Language: Английский

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Breaking Kinetic Barriers in the Electrooxidation of 5-Hydroxymethylfurfural over Ni-Based Catalysts via Rational Electronic Structure Modulation

Applied Catalysis B Environment and Energy, Journal Year: 2025, Volume and Issue: unknown, P. 125229 - 125229

Published: March 1, 2025

Language: Английский

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Structural designs and mechanism insights into electrocatalytic oxidation of 5-hydroxymethylfurfural

Journal of Energy Chemistry, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 1, 2024

Language: Английский

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Facile preparation of CoFe-MnO2@titania nanotube array bifunctional electrodes for high-current-density water splitting at industrial temperatures

Journal of Material Science and Technology, Journal Year: 2024, Volume and Issue: 211, P. 123 - 133

Published: June 20, 2024

Language: Английский

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Electronic modulation and dual-defect construction of NiMoP/Ni2P heterointerfaces for sustainable oxygen evolution reaction

Rare Metals, Journal Year: 2024, Volume and Issue: unknown

Published: July 22, 2024

Language: Английский

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Mechanistic Insights into the Role of Elements in Ni‐Co‐P Catalysts for Electrochemical Conversion of 5‐Hydroxymethylfurfural to 2,5‐Furandicarboxylic Acid

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Aug. 29, 2024

Abstract Ni phosphides and NiCo alloys are extensively explored for their remarkable efficiency in biomass alcohol oxidations, yet the underlying mechanisms remain inadequately understood. This study thoroughly elucidates roles of Ni, Co, P improving catalytic performance Ni‐Co‐P catalysts electrochemical conversion 5‐hydroxymethylfurfural (HMF) to 2,5‐furandicarboxylic acid (FDCA), a promising biomass‐derived building block replacing terephthalic acid. Phosphorization results partial formation 2 phase significantly boosts reactive NiOOH on surface, which is crucial converting HMF into FDCA. The integration Co heterojunction between enhances oxidation reactivity 5‐formyl‐2‐furancarboxylic (FFCA), pivotal intermediate influencing FDCA productivity, by selectively stabilizing aldehydes, thereby promoting further rather than surface desorption. situ /operando spectroscopic analyses consistently highlight equal significance rapid generation robust adsorption reactant molecules at achieving high performance. These insights elemental contributions set new standard designing multi‐component electrocatalysts efficient oxidation.

Language: Английский

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Electrochemical refining of energy-saving coupled systems toward generation of high-value chemicals

Chem, Journal Year: 2024, Volume and Issue: 10(9), P. 2666 - 2699

Published: Aug. 15, 2024

Language: Английский

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Co- and V₂O₃-Modified Ni-Based Nanocatalyst for 5-Hydroxymethylfurfural Electrooxidation

ACS Applied Nano Materials, Journal Year: 2024, Volume and Issue: 7(7), P. 7605 - 7613

Published: March 28, 2024

The electrooxidation of 5-hydroxymethylfurfural (HMF) provides a prospective method to produce high-value 2,5-furandicarboxylic acid (FDCA). Since this multistep process includes the oxidation aldehyde and hydroxyl groups, deep understanding mechanism HMF reaction (HMFOR) is crucial. Herein, surface reconstruction nickel-based catalyst regulated by Co V2O3 modifications reveal relationship between reconstructed HMFOR performance. introduction nanosheet facilitates in situ nanocatalyst enhancing adsorption OH*. incorporation adjusts electronic structure nickel, contributing decrease formation potential NiOOH. Moreover, insitugenerated NiOOH promotes activation providing beneficial effects for HMFOR. Impressively, Co–Ni/V2O3/NF needs only 1.29 VRHE achieve 10 mA cm–2 maintains high FDCA selectivity cycles. This work explains regulations on species formation, which conducive designing an efficient oxidation.

Language: Английский

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