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在聚吡咯纳米线基质上 facile 合成 3D 花状铂纳米结构以增强甲醇氧化反应 。 （注：“facile”常见释义为“简便的、容易的” ，这里保留英文未翻译，可能是特定专业术语或有特定语境含义 ）

Facile synthesis of 3D flower-like Pt nanostructures on polypyrrole nanowire matrix for enhanced methanol oxidation.

作者信息

Mazzotta E, Caroli A, Pennetta A, De Benedetto G E, Primiceri E, Monteduro A G, Maruccio G, Malitesta C

机构信息

Dipartimento di Scienze e Tecnologie Biologiche ed Ambientali, Università del Salento Via Monteroni 73100 Lecce Italy

Dipartimento di Beni Culturali, Università del Salento Via D. Birago, 64 73100 Lecce Italy.

出版信息

RSC Adv. 2018 Mar 14;8(19):10367-10375. doi: 10.1039/c7ra13269g. eCollection 2018 Mar 13.

DOI:10.1039/c7ra13269g
PMID:35540475
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9078891/
Abstract

Here we report the simple and rapid synthesis of three-dimension Pt flower-like nanostructures (PtNFs) on a polypyrrole nanowires (PPyNWs) matrix. Both PtNFs and PPyNWs are prepared by an electrochemical approach without using any seed, template or surfactant. The morphology and chemical composition of the resulting PtNF/PPyNWs hybrids are characterized by scanning electron microscopy and by X-ray photoelectron spectroscopy, respectively. Taking methanol oxidation as a model catalysis reaction, the electrocatalytic performance of the as-prepared PtNF/PPyNWs system has been evaluated by cyclic voltammetry and chronoamperometry, evidencing that these 3D materials exhibit excellent electrocatalytic activity and high level of poisoning tolerance to the carbonaceous oxidative intermediates. Such electrocatalytic performances can be ascribed to the combined effect of the flower-like structure promoting the exposure of more sites and the polymer nanowires matrix endorsing high dispersion of PtNF on a high electrochemically active surface area, besides the removal of sub-products from electrocatalytic sites.

摘要

在此，我们报道了在聚吡咯纳米线（PPyNWs）基质上简单快速地合成三维铂花状纳米结构（PtNFs）。PtNFs和PPyNWs均通过电化学方法制备，无需使用任何种子、模板或表面活性剂。所得PtNF/PPyNWs杂化物的形貌和化学成分分别通过扫描电子显微镜和X射线光电子能谱进行表征。以甲醇氧化作为模型催化反应，通过循环伏安法和计时电流法对所制备的PtNF/PPyNWs体系的电催化性能进行了评估，结果表明这些三维材料表现出优异的电催化活性以及对含碳氧化中间体的高抗中毒能力。这种电催化性能可归因于花状结构促进更多位点暴露以及聚合物纳米线基质支持PtNF在高电化学活性表面积上高度分散的综合效应，此外还包括从电催化位点去除副产物。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/89be/9078891/583620c46b39/c7ra13269g-f9.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/89be/9078891/f18e678570df/c7ra13269g-f1.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/89be/9078891/e6933827ebac/c7ra13269g-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/89be/9078891/e4066227fa40/c7ra13269g-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/89be/9078891/25233f1af8b0/c7ra13269g-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/89be/9078891/fa485693a2ef/c7ra13269g-f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/89be/9078891/e42488edd262/c7ra13269g-f8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/89be/9078891/583620c46b39/c7ra13269g-f9.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/89be/9078891/f18e678570df/c7ra13269g-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/89be/9078891/2c8bcb6733a4/c7ra13269g-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/89be/9078891/f9c9f58e458f/c7ra13269g-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/89be/9078891/e6933827ebac/c7ra13269g-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/89be/9078891/e4066227fa40/c7ra13269g-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/89be/9078891/25233f1af8b0/c7ra13269g-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/89be/9078891/fa485693a2ef/c7ra13269g-f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/89be/9078891/e42488edd262/c7ra13269g-f8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/89be/9078891/583620c46b39/c7ra13269g-f9.jpg

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