Formation of Pt-Based Alloy Nanoparticles Assisted by Molybdenum Hexacarbonyl

被引：4
作者：
Leteba, Gerard M. [1 ,2 ]
Mitchell, David R. G. [3 ]
Levecque, Pieter B. J. [1 ]
van Steen, Eric [1 ]
Lang, Candace I. [2 ]
机构：
[1] Univ Cape Town, Catalysis Inst, Dept Chem Engn, ZA-7700 Cape Town, South Africa
[2] Macquarie Univ, Sch Engn, Sydney, NSW 2109, Australia
[3] Univ Wollongong, Electron Microscopy Ctr, Innovat Campus, Wollongong, NSW 2517, Australia
来源：
NANOMATERIALS | 2021年 / 11卷 / 07期
基金：
新加坡国家研究基金会; 芬兰科学院; 澳大利亚研究理事会;
关键词：
alloys; nanoparticle; molybdenum hexacarbonyl; surfactants; STEM-EDXS; thermolytic synthesis; HOLLOW NANOCRYSTALS; PLATINUM; GROWTH; SEGREGATION; CATALYSTS; SURFACE;
D O I：
10.3390/nano11071825
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
We report on an optimized, scalable solution-phase synthetic procedure for the fabrication of fine-tuned monodisperse nanostructures (Pt(NiCo), PtNi and PtCo). The influence of different solute metal precursors and surfactants on the morphological evolution of homogeneous alloy nanoparticles (NPs) has been investigated. Molybdenum hexacarbonyl (Mo(CO)(6)) was used as the reductant. We demonstrate that this solution-based strategy results in uniform-sized NPs, the morphology of which can be manipulated by appropriate selection of surfactants and solute metal precursors. Co-surfactants (oleylamine, OAm, and hexadecylamine, HDA) enabled the development of a variety of high-index faceted NP morphologies with varying degrees of curvatures while pure OAm selectively produced octahedral NP morphologies. This Mo(CO)(6)-based synthetic protocol offers new avenues for the fabrication of multi-structured alloy NPs as high-performance electrocatalysts.
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页数：15
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