Synthesis and Pyrolysis of Fullerenol‐stabilized Pt Nanocolloids as a unique Approach to Pt‐doped Carbon
Synthesis and Pyrolysis of Fullerenol‐stabilized Pt Nanocolloids as a unique Approach to Pt‐doped Carbon
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富勒烯醇稳定的 Pt 纳米胶体的合成和热解作为 Pt 掺杂碳的独特方法
DOI：
10.1002/asia.202100495
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发表时间：
2021
期刊：
影响因子：
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通讯作者：
Sakurai Hidehiro
中科院分区：
文献类型：
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作者：
Cabello Mark Kristan Espejo;Uetake Yuta;Yao Yu;Kuwabata Susumu;Sakurai Hidehiro
通过液相化学还原法成功地合成了由富勒烯C60（OH）12（Pt：C60（OH）12）稳定的Pt纳米颗粒（NPs）的水性胶体分散体。随后在不同温度下进行Pt：C60（OH）12的热解以提供具有不同化学组成的Pt掺杂的碳（Pt：C60 n）。X射线吸收光谱（XAS）和红外（IR）吸收光谱以及热重测量表明，由此制备的纳米复合材料由Pt NPs和高价Pt-C60（OH）12络合物组成。C60（OH）12基质作为催化剂载体的一个显著特征是在高达300 °C的热解过程中抑制Pt NP的尺寸生长。使用循环伏安法（CV）和线性扫描伏安法（LSV）进行电化学实验，发现Pt：C60300（在300 °C下热解）表现出比其他催化剂更高的活性，这归因于所得碳的π延伸特征。
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)12at 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)12complex. One distinct feature of C60(OH)12matrix 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.