Pt nanoparticles anchored by oxygen vacancies in MXenes for efficient electrocatalytic hydrogen evolution reaction

Zhao, Qin; Zhang, Yue; Ke, Changwang; Yang, Weilin; Yue, Jianshu; Yang, Xiaofei; Xiao, Weiping

doi:10.1039/d4nr00020j

Nanoscale

2024

DOI: 10.1039/d4nr00020j

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Pt nanoparticles anchored by oxygen vacancies in MXenes for efficient electrocatalytic hydrogen evolution reaction

Qin Zhao,

Yue Zhang,

Changwang Ke

et al.

Abstract: Pt/MXene heterostructures were prepared by constructing oxygen vacancies on MXene to anchor Pt nanoparticles, which exhibited accelerated HER kinetics in 0.5 M H2SO4 solution due to the synergistic effect between MXenes and Pt nanoparticles.

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Cited by 5 publications

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Coupling CoIr Nanoalloys with MXene by Lewis Acidic Molten Salt Etching for Wide‐pH‐Environment Hydrogen Evolution Reaction

Zhou,

Zhao,

Wang

et al. 2024

Small Methods

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Metal/MXene‐based materials show broad prospects in energy conversation through the strong metal‐support interaction (SMSI). However, the difficulty and harshness of synthesis heavily limit their further application. Herein, using Lewis acidic molten salt to etch MAX as a precursor of MXene, a more convenient and safer strategy is designed to in situ construct the MXene‐supported CoIr nanoalloy (CoIr/MXene) catalyst through Ti─O─M bond. The special layered structure and oxygen‐containing functional group of MXene regulate the SMSI upon CoIr nanoalloys. Moreover, the contact angle and in situ Raman test results exhibit good interface hydrophilicity of MXene, enhancing the water adsorption on interfaces, and accelerating the mass transfer process. As a result, CoIr/MXene shows high hydrogen evolution reaction (HER) performance, which only needs overpotentials of 34 and 50 mV to drive a current density of 10 mA cm−2 in alkaline and acidic media, respectively, with excellent stability. Especially, in alkaline media, CoIr/MXene possesses 6 times higher HER mass activity (4.297 A mgIr−1) than commercial Pt/C catalysts (0.686 A mgPt−1) at the potential of 50 mV, indicating larger active site density and intrinsic activity for CoIr/MXene. This work expands the application of the molten salt assist etching strategy and provides new insight for the development of metal/MXene‐based catalysts.

show abstract

Coupling CoIr Nanoalloys with MXene by Lewis Acidic Molten Salt Etching for Wide‐pH‐Environment Hydrogen Evolution Reaction

Zhou,

Zhao,

Wang

et al. 2024

Small Methods

View full text Add to dashboard Cite

show abstract

Nanocomposite engineering: Tailoring MXene/Cobalt oxide for efficient electrocatalytic hydrogen and oxygen evolution reactions

Sunny,

Rajalekshmi,

Pandikumar

2024

Journal of Alloys and Compounds

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Nonequilibrium-corrosive engineering synthesis of Pt anchored on Fe3O4 with oxygen vacancy for efficient electrocatalytic hydrogen evolution reaction

Liu,

Zhao,

et al. 2024

Journal of Colloid and Interface Science

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Pt nanoparticles anchored by oxygen vacancies in MXenes for efficient electrocatalytic hydrogen evolution reaction

Abstract: Pt/MXene heterostructures were prepared by constructing oxygen vacancies on MXene to anchor Pt nanoparticles, which exhibited accelerated HER kinetics in 0.5 M H2SO4 solution due to the synergistic effect between MXenes and Pt nanoparticles.

Cited by 5 publications

References 68 publications

Coupling CoIr Nanoalloys with MXene by Lewis Acidic Molten Salt Etching for Wide‐pH‐Environment Hydrogen Evolution Reaction

Coupling CoIr Nanoalloys with MXene by Lewis Acidic Molten Salt Etching for Wide‐pH‐Environment Hydrogen Evolution Reaction

Nanocomposite engineering: Tailoring MXene/Cobalt oxide for efficient electrocatalytic hydrogen and oxygen evolution reactions

Nonequilibrium-corrosive engineering synthesis of Pt anchored on Fe3O4 with oxygen vacancy for efficient electrocatalytic hydrogen evolution reaction

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