|
1
|
Cabello MKE, Uetake Y, Yao Y, Kuwabata S, Sakurai H. Synthesis and Pyrolysis of Fullerenol-stabilized Pt Nanocolloids as a unique Approach to Pt-doped Carbon. Chem Asian J 2021; 16:2280-2285. [PMID: 34128349 DOI: 10.1002/asia.202100495] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2021] [Revised: 06/12/2021] [Indexed: 11/10/2022]
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.
Collapse
Affiliation(s)
- Mark Kristan Espejo Cabello
- Division of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka, Japan
| | - Yuta Uetake
- Division of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka, Japan.,Innovative Catalysis Science Division, Institute for Open and Transdisciplinary Research Initiatives (ICS-OTRI), Osaka University, 2-1 Yamadaoka, Suita, Osaka, Japan
| | - Yu Yao
- Division of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka, Japan
| | - Susumu Kuwabata
- Division of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka, Japan.,Innovative Catalysis Science Division, Institute for Open and Transdisciplinary Research Initiatives (ICS-OTRI), Osaka University, 2-1 Yamadaoka, Suita, Osaka, Japan
| | - Hidehiro Sakurai
- Division of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka, Japan.,Innovative Catalysis Science Division, Institute for Open and Transdisciplinary Research Initiatives (ICS-OTRI), Osaka University, 2-1 Yamadaoka, Suita, Osaka, Japan
| |
Collapse
|
|
2
|
Dix ST, Linic S. In-operando surface-sensitive probing of electrochemical reactions on nanoparticle electrocatalysts: Spectroscopic characterization of reaction intermediates and elementary steps of oxygen reduction reaction on Pt. J Catal 2021. [DOI: 10.1016/j.jcat.2021.02.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
|
3
|
Dickinson EJ, Wain AJ. The Butler-Volmer equation in electrochemical theory: Origins, value, and practical application. J Electroanal Chem (Lausanne) 2020. [DOI: 10.1016/j.jelechem.2020.114145] [Citation(s) in RCA: 62] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
|
4
|
Kosakian A, Urbina LP, Heaman A, Secanell M. Understanding single-phase water-management signatures in fuel-cell impedance spectra: A numerical study. Electrochim Acta 2020. [DOI: 10.1016/j.electacta.2020.136204] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|