Leteba Gerard M, Mitchell David R G, Levecque Pieter B J, van Steen Eric, Lang Candace I
Catalysis Institute, Department of Chemical Engineering, University of Cape Town, Cape Town 7700, South Africa.
School of Engineering, Macquarie University, Sydney, NSW 2109, Australia.
Nanomaterials (Basel). 2021 Jul 14;11(7):1825. doi: 10.3390/nano11071825.
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)) 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)-based synthetic protocol offers new avenues for the fabrication of multi-structured alloy NPs as high-performance electrocatalysts.
我们报道了一种用于制备精细调控的单分散纳米结构（Pt(NiCo)、PtNi和PtCo）的优化、可扩展的溶液相合成方法。研究了不同溶质金属前驱体和表面活性剂对均匀合金纳米颗粒（NPs）形态演变的影响。六羰基钼（Mo(CO)）用作还原剂。我们证明，这种基于溶液的策略可产生尺寸均匀的NPs，其形态可通过适当选择表面活性剂和溶质金属前驱体来操控。共表面活性剂（油胺，OAm，和十六胺，HDA）能够产生各种具有不同曲率程度的高指数面NP形态，而纯OAm则选择性地产生八面体NP形态。这种基于Mo(CO)的合成方案为制备作为高性能电催化剂的多结构合金NPs提供了新途径。
Zotero 插件
