Unique Pt–C coordination on inner SWCNT surfaces enhances stability of confined Pt nanoparticles

Applied Physics Express 2026 Open access

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Authors: Zhuoya Deng, Pengfei Wang, Hojung Yun, Yuanyuan Liu, Nutthira Pakkang, Garbis Atam Akceoglu, Sangwoo Chae, Yasuyuki Sawada, Nagahiro Saito
DOI: 10.35848/1882-0786/ae3358
Cited by: 0
References: 41

Abstract

Abstract Encapsulation of Pt nanoparticles within single-walled carbon nanotubes (SWCNTs) is examined as a route to stabilizing sub-2 nm clusters. A sequential process—acid-reflux opening, solution-plasma reduction, and reductive annealing—yields uniform Pt filling. TEM confirms one-dimensional confinement, and XRD/XPS indicate metallic Pt with stabilized Pt 2+ /Pt 0 states. EXAFS identifies Pt–C coordination unique to encapsulated Pt and absent in external Pt/SWCNT. Reactive-force-field molecular dynamics show confinement strengthens Pt–C bonding and suppresses Pt–Pt coalescence during thermal cycling. These results demonstrate SWCNTs as effective confinement hosts for constructing durable, quantum-confined electrocatalyst architectures.

Fields of Study & Subjects

Electrocatalysts for Energy Conversion Carbon Nanotubes in Composites CO2 Reduction Techniques and Catalysts

Publication details

Journal / source
Applied Physics Express
Volume
19
Issue
2
Pages
025001–025001
Publication date
5 January 2026
Language
EN