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- Title
Synthesis and Pyrolysis of Fullerenol‐stabilized Pt Nanocolloids as a unique Approach to Pt‐doped Carbon.
- Authors
Cabello, Mark Kristan Espejo; Uetake, Yuta; Yao, Yu; Kuwabata, Susumu; Sakurai, Hidehiro
- Abstract
An aqueous colloidal dispersion of Pt nanoparticles (NPs) stabilized by fullerenol C60(OH)12 (Pt:C60(OH)12) was successfully synthesized via liquid‐phase chemical reduction. The subsequent pyrolysis of Pt:C60(OH)12 at different temperatures was conducted to afford Pt‐doped carbon with different chemical compositions (Pt:C60n). X‐ray absorption spectroscopy (XAS) and Infrared (IR) absorption spectroscopy and thermogravimetric measurements revealed that the thus‐prepared nanocomposite consists of Pt NPs and high valent Pt‐C60(OH)12 complex. One distinct feature of C60(OH)12 matrix as catalyst support is the suppression of size growth of Pt NPs during the pyrolysis up to 300 °C. Electrochemical experiments using cyclic voltammetry (CV) and linear sweep voltammetry (LSV) were performed to find that Pt:C60300 (pyrolyzed at 300 °C) exhibited higher activity than others, that was attributed to the π‐extended feature of the as‐obtained carbon.
- Subjects
PLATINUM nanoparticles; PYROLYSIS; CHEMICAL reduction; CATALYST supports; X-ray absorption; CYCLIC voltammetry; CATALYSTS
- Publication
Chemistry - An Asian Journal, 2021, Vol 16, Issue 16, p2280
- ISSN
1861-4728
- Publication type
Article
- DOI
10.1002/asia.202100495