Two-Dimensional Tantalum Carbo-Selenide for Hydrogen Evolution

IF 15.8 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

ACS Nano Pub Date : 2025-01-16 DOI:10.1021/acsnano.4c09903

Elham Loni, Ahmad Majed, Shengjie Zhang, Hari H. S. Thangavelu, Chaochao Dun, Anika Tabassum, Karamullah Eisawi, Jeffrey J. Urban, Per O. Å. Persson, Matthew M. Montemore, Michael Naguib

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Abstract

Herein, we report the synthesis of two-dimensional Ta₂Se₂C (2D-Ta₂Se₂C) nanosheets using electrochemical lithiation in multilayer Ta₂Se₂C followed by sonication in deionized water. Multilayer Ta₂Se₂C was obtained via solid-state synthesis of Fe_xTa₂Se₂C followed by chemical etching of Fe. 2D-Ta₂Se₂C exhibited promising electrocatalytic activity for the hydrogen evolution reaction from water compared to multilayer Ta₂Se₂C and 2D-TaSe₂. 2D-Ta₂Se₂C showed an overpotential at 10 mA·cm^–2 (η₁₀) of 264 mV, a Tafel slope of 91 mV·dec^–1, and an electrochemically active surface area of 17.61 m_ECSA²·g_catalyst^–1. The high performance could be attributed to the large surface area of single sheets which hence maximizes the number of exposed catalytic sites and increased density of vacancies, observed with transmission electron microscopy, during synthesis and processing.

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来源期刊

ACS Nano 工程技术-材料科学：综合

CiteScore

26.00

自引率

4.10%

发文量

1627

审稿时长

1.7 months

期刊介绍： ACS Nano, published monthly, serves as an international forum for comprehensive articles on nanoscience and nanotechnology research at the intersections of chemistry, biology, materials science, physics, and engineering. The journal fosters communication among scientists in these communities, facilitating collaboration, new research opportunities, and advancements through discoveries. ACS Nano covers synthesis, assembly, characterization, theory, and simulation of nanostructures, nanobiotechnology, nanofabrication, methods and tools for nanoscience and nanotechnology, and self- and directed-assembly. Alongside original research articles, it offers thorough reviews, perspectives on cutting-edge research, and discussions envisioning the future of nanoscience and nanotechnology.