Cited by 210Electrocatalysts for Energy ConversionNanomaterials for catalytic reactionsHydrogen Storage and Materials

In Situ Formed Pt 3 Ti Nanoparticles on a Two-Dimensional Transition Metal Carbide (MXene) Used as Efficient Catalysts for Hydrogen Evolution Reactions

Li, Zhe, Qi, Zhiyuan, Wang, Siwen, Ma, Tao, Zhou, Lin, Wu, Zhenwei, Luan, Xuechen, Lin, Fang-Yi +5 more·2019·Nano Letters

Abstract

The design of efficient catalysts capable of delivering high currents at low overpotentials for hydrogen evolution reactions (HERs) is urgently needed to use catalysts in practical applications. Herein, we report platinum (Pt) alloyed with titanium (Ti) from the surface of Ti 3 C 2 T x MXenes to form Pt 3 Ti intermetallic compound (IMC) nanoparticles (NPs) via in situ coreduction. In situ X-ray absorption spectroscopy (XAS) indicates that Pt undergoes a temperature-dependent transformation from single atoms to intermetallic compounds, and the catalyst reduced at 550 °C exhibits a superior HER performance in acidic media. The Pt/Ti 3 C 2 T x -550 catalyst outperforms commercial Pt/Vulcan and has a small overpotential of 32.7 mV at 10 mA cm -2 and a low Tafel slope of 32.3 mV dec -1 . The HER current was normalized by the mass and dispersion of Pt, and the mass activity and specific activity of Pt/Ti 3 C 2 T x -550 are 4.4 and 13 times higher, respectively, than those of Pt/Vulcan at an overpotential of 70 mV. The density functional theory (DFT) calculations suggest that the (111)- and (100)-terminated Pt 3 Ti nanoparticles exhibit *H binding comparable to Pt(111), while the (110) termination has an *H adsorption that is too exergonic, thus poisoned in the low overpotential region. This work demonstrates the potential of MXenes as platforms for the design of electrocatalysts and may spur future research for other MXene-supported metal catalysts that can be used for a wide range…

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Crossref · 10.1021/acs.nanolett.9b01381

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Authors
Li, Z., Qi, Z., Wang, S., Ma, T., Zhou, L., Wu, Z., Luan, X., Lin, F.-Y., Chen, M., Miller, J. T., Xin, H., Huang, W., & Wu, Y.
Affiliations
  • Iowa State University (US)
  • Virginia Tech (US)
  • Ames National Laboratory (US)
  • Purdue University West Lafayette (US)
Corresponding author
  • Xin, Hongliang
  • Huang, Wenyu
  • Wu, Yue
Venue
Nano Letters
Published
2019-07-04
Volume
19
Issue
8
Pages
5102-5108
ISSN
  • 1530-6984 (ISSN-L)
  • 1530-6992
OpenAlex
W2955981865
Cited by
210
References
32
Citations by year
2026: 17 · 2025: 23 · 2024: 46 · 2023: 39 · 2022: 36 · 2021: 25 · 2020: 23 · 2019: 1
FWCI
4.52
Type
journal article
Language
en
Open access
closed
Locations
  • Nano Letters (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Division of Engineering Education and Centers (EEC-1647722)
  • American Chemical Society Petroleum Research Fund (55170-DNI5, 55581-DNI5)
  • U.S. Department of Energy (DE-AC02-06CH11357)
  • Division of Chemical, Bioengineering, Environmental, and Transport Systems (CBET-1604984, CBET-1845531)
  • Iowa State University
Topics
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Electrocatalysts for Energy Conversion
  • Physical Sciences › Chemistry › Organic Chemistry › Nanomaterials for catalytic reactions
  • Physical Sciences › Materials Science › Materials Chemistry › Hydrogen Storage and Materials
Keywords
Ti3C2Tx MXene, hydrogen evolution reaction, intermetallic compounds, acidic HER, hydrogen adsorption, surface termination effects, mass and specific activity

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