2D MoB MBene: An Efficient Co-Catalyst for Photocatalytic Hydrogen Production under Visible Light

ACS Nano, Journal Year: 2024, Volume and Issue: 18(19), P. 12524 - 12536

Published: April 30, 2024

Highly active and low-cost co-catalysts have a positive effect on the enhancement of solar H2 production. Here, we employ two-dimensional (2D) MBene as noble-metal-free co-catalyst to boost semiconductor for photocatalytic MoB is 2D nanoboride, which directly made from MoAlB by facile hydrothermal etching manual scraping off process. The as-synthesized with purity >95 wt % treated ultrasonic cell pulverization obtain ultrathin nanosheets (∼0.61 nm) integrated CdS via an electrostatic interaction strategy. CdS/MoB composites exhibit ultrahigh production activity 16,892 μmol g–1 h–1 under visible light, surpassing that pure exciting factor ≈1135%. Theoretical calculations various measurements account high performance in terms Gibbs free energy, work functions, photoelectrochemical properties. This discovers huge potential these promising family materials high-efficiency

Language: Английский

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In situ Mo doping in NiS₂: enhancing electron density and stimulating electronic conductivity of Cu₃P–GDY for efficient photocatalytic hydrogen evolution

Journal of Materials Chemistry A, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

The electronic conductivity of a catalyst can be enhanced by strategically doping with specific elements.

Language: Английский

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Synthesis of Mo ₂C MXene with high electrochemical performance by alkali hydrothermal etching

Journal of Advanced Ceramics, Journal Year: 2023, Volume and Issue: 12(10), P. 1889 - 1901

Published: Aug. 3, 2023

Two-dimensional MXenes are generally prepared by the etching of acid solutions. The as-synthesized terminated group anions (F^–, Cl^–, et al.), which affect electrochemical performance MXenes. Here, we report a novel method to prepare Mo₂C MXene from Mo₂Ga₂C hydrothermal alkali Highly pure was successfully synthesized NaOH, while etchings LiOH and KOH were failed. concentration temperature time strongly purity as-prepared MXene. Pure could be 20 M NaOH at 180 °C for 24 h. After intercalation hexadecyl trimethyl ammonium bromide 90 96 h, few-layer obtained. made after exhibited excellent as anode lithium-ion battery, compared with general HF reported in literature. final discharge specific capacity 266.73 mAh·g^-1 0.8 A·g^-1, is 52% higher than that (175.77 mAh·g^-1). This because has lager surface area, lower resistance, O/OH termination without anion termination. first make samples this significantly better etching.

Language: Английский

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Deintercalation of Al from MoAlB by molten salt etching to achieve a Mo ₂AlB ₂ compound and 2D MoB nanosheets

Journal of Advanced Ceramics, Journal Year: 2023, Volume and Issue: 12(5), P. 943 - 953

Published: Feb. 17, 2023

Two-dimensional (2D) MoB metal borides (MoB MBene) have attracted much attention due to their fascinating properties and functional applications. So far, work on the synthesis of 2D nanosheets by acid or alkaline etching MoAlB has not been very successful. It proposed that MBene may be fabricated chemical a Mo₂AlB₂ precursor, but further investigations were performed possibly difficult preparation metastable compound at high temperatures solid-state reactions. Here, we report successful deintercalation Al from through ZnCl₂ molten salt approach relatively low temperatures. The influence temperature, time, starting mixtures formation desirable phases investigated. A pure was synthesized below 600 ℃, while obtained 700 ℃ MoAlB. In addition, present confirms can prepared as-synthesized precursor in LiF–HCl solution. Our demonstrates is an effective method prepare MBene.

Language: Английский

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Temperature-driven n- to p-type transition of a chemiresistive NiO/CdS-CdO NO2 gas sensor

Sensors and Actuators B Chemical, Journal Year: 2023, Volume and Issue: 398, P. 134755 - 134755

Published: Oct. 10, 2023

Language: Английский

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A recent prospective and progress on MXene-based photocatalysts for efficient solar fuel (hydrogen) generation via photocatalytic water-splitting

International Journal of Hydrogen Energy, Journal Year: 2023, Volume and Issue: 53, P. 1242 - 1258

Published: Dec. 21, 2023

Language: Английский

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Effects of surface compositions and interlayer distance on electrochemical performance of Mo2CTx MXene as anode of Li-ion batteries

Journal of Physics and Chemistry of Solids, Journal Year: 2023, Volume and Issue: 176, P. 111238 - 111238

Published: Jan. 23, 2023

Language: Английский

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The synthesis of MXenes

MRS Bulletin, Journal Year: 2023, Volume and Issue: 48(3), P. 245 - 252

Published: March 1, 2023

Language: Английский

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Review on CdS-derived photocatalysts for solar photocatalytic applications – Advances and challenges

Journal of Industrial and Engineering Chemistry, Journal Year: 2023, Volume and Issue: 130, P. 105 - 124

Published: Oct. 5, 2023

Language: Английский

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Structure, Synthesis, and Catalytic Performance of Emerging MXene-Based Catalysts

Molecules, Journal Year: 2024, Volume and Issue: 29(6), P. 1286 - 1286

Published: March 14, 2024

As traditional fossil fuel energy development faces significant challenges, two-dimensional layered materials have become increasingly popular in various fields and generated widespread research interest. MXene is an exceptional catalytic material that typically integrated into functional composite with other substances to enhance its catalytic-reaction performance. Improving the thermal stability, electrical conductivity, electrochemical activity, as well enhancing specific surface structure, can make excellent catalyst for photoelectrocatalysis energy-regeneration reactions. The article mainly outlines structural characteristics, preparation methods, applications of field catalysis. This text highlights latest progress performance comparison MXene-based such conversion, photocatalysis, renewable energy, storage, carbon capture conversion. It also proposes future prospects discusses current bottlenecks challenges materials.

Language: Английский

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