微波辅助合成八面体铑纳米晶体及其对甲酸的电催化氧化性能。

Microwave-assisted synthesis of octahedral Rh nanocrystals and their performance for electrocatalytic oxidation of formic acid.

作者信息

Liu Xiaomeng, Xu Junxuan, Zhang Haoyue, Zhong Yitian, Feng Haosheng, Zhao Yanxi, Li Qin, Li Xianghong, Huang Tao

机构信息

Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education, College of Chemistry and Materials Science, South-central Minzu University Wuhan 430074 China

出版信息

RSC Adv. 2023 Jan 11;13(3):1751-1756. doi: 10.1039/d2ra07445a. eCollection 2023 Jan 6.

DOI:10.1039/d2ra07445a

PMID:36712636

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9832441/

Abstract

Uniform and well-defined octahedral Rh nanocrystals were rapidly synthesized in a domestic microwave oven for only 140 s of irradiation by reducing Rh(acac) with tetraethylene glycol (TEG) as both a solvent and a reducing agent in the presence of an appropriate amount of KI, didecyl dimethyl ammonium chloride (DDAC), ethylene diamine (EDA) and polyvinylpyrrolidone (PVP). KI, DDAC and EDA were essential for the creation of octahedral Rh nanocrystals. Electrochemical measurements showed a significantly enhanced electrocatalytic activity and stability for the as-prepared octahedral Rh nanocrystals compared with commercial Rh black.

摘要

通过在适量的碘化钾（KI）、双癸基二甲基氯化铵（DDAC）、乙二胺（EDA）和聚乙烯吡咯烷酮（PVP）存在的条件下，以四甘醇（TEG）作为溶剂和还原剂还原乙酰丙酮铑（Rh(acac)），在国产微波炉中仅通过140秒的辐照就快速合成了均匀且形状明确的八面体铑纳米晶体。KI、DDAC和EDA对于八面体铑纳米晶体的形成至关重要。电化学测量表明，与商业铑黑相比，所制备的八面体铑纳米晶体具有显著增强的电催化活性和稳定性。