Enhanced kinetic isotope effect in the hydrogen evolution reaction with single-walled carbon nanotube-confined Pt catalyst under acidic and alkaline conditions
Abstract The kinetics of hydrogen evolution reaction (HER) is essential in the electrochemical field. A single-walled carbon nanotube (SWCNT)-confined Pt catalyst (Pt@SWCNT) was prepared and its kinetic isotope effect (KIE) of HER under acidic and alkaline conditions at 20℃ to 50℃ was investigated. Pt@SWCNT gave KIE values of 2.74 in H2SO4/D2SO4 and 10.7 in potassium hydroxide (KOH)/potassium deuteroxide (KOD) at −50 mV overpotential, higher than that of the commercial Pt/C catalyst under alkaline conditions. This work can guide the screening of practical catalysts for H2 production and hydrogen isotope separation.
Authors
- Denggao Guan
- Cigang Xu (ORCID: https://orcid.org/0000-0002-9455-6776)
- Haowei Yang
- Guoshu Zhang (ORCID: https://orcid.org/0009-0005-5873-4749)
- Zihan Zhang (ORCID: https://orcid.org/0000-0002-5882-055X)
- Wuliang Yin (ORCID: https://orcid.org/0000-0001-5927-3052)
- Jinguang Cai (ORCID: https://orcid.org/0000-0003-3641-5083)
Institutions
- China Academy of Engineering Physics (CN)
- Chengdu University of Technology (CN)
- East China University of Technology (CN)
Publication Details
- Journal
- Chemistry Letters
- Published
- 2025-06-30
- DOI
- https://doi.org/10.1093/chemle/upaf124
- Primary Topic
- Electrocatalysts for Energy Conversion
- Type
- article
- Field-Weighted Citation Impact
- 0.00