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可调变芳基烷基离子液体负载合成铂纳米粒子及其在析氢反应和硅氢化反应中的催化活性。

Tunable Aryl Alkyl Ionic Liquid Supported Synthesis of Platinum Nanoparticles and Their Catalytic Activity in the Hydrogen Evolution Reaction and in Hydrosilylation.

机构信息

Institut für Anorganische Chemie und Strukturchemie, Heinrich-Heine-Universität Düsseldorf, 40204 Düsseldorf, Germany.

Physikalische Organische Chemie, Technische Universität Dresden, 01062 Dresden, Germany.

出版信息

Molecules. 2023 Jan 3;28(1):405. doi: 10.3390/molecules28010405.

DOI:10.3390/molecules28010405
PMID:36615598
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9822459/
Abstract

Tunable aryl alkyl ionic liquids (TAAILs) are ionic liquids (ILs) with a 1-aryl-3-alkylimidazolium cation having differently substituted aryl groups. Herein, nine TAAILs with the bis(trifluoromethylsulfonyl)imide anion are utilized in combination with and without ethylene glycol (EG) as reaction media for the rapid microwave synthesis of platinum nanoparticles (Pt-NPs). TAAILs allow the synthesis of small NPs and are efficient solvents for microwave absorption. Transmission electron microscopy (TEM) shows that small primary NPs with sizes of 2 nm to 5 nm are obtained in TAAILs and EG/TAAIL mixtures. The Pt-NPs feature excellent activity as electrocatalysts in the hydrogen evolution reaction (HER) under acidic conditions, with an overpotential at a current density of 10 mA cm as low as 32 mV vs the reversible hydrogen electrode (RHE), which is significantly lower than the standard Pt/C 20% with 42 mV. Pt-NPs obtained in TAAILs also achieved quantitative conversion in the hydrosilylation reaction of phenylacetylene with triethylsilane after just 5 min at 200 °C.

摘要

可调变芳基烷基离子液体（TAAILs）是具有不同取代芳基的 1-芳基-3-烷基咪唑阳离子的离子液体（ILs）。本文中，使用了 9 种带有双（三氟甲烷磺酰基）亚胺阴离子的 TAAILs，并与乙二醇（EG）一起或不与乙二醇（EG）一起作为反应介质，用于快速微波合成铂纳米颗粒（Pt-NPs）。TAAILs 允许合成小的 NPs，并且是微波吸收的有效溶剂。透射电子显微镜（TEM）显示，在 TAAILs 和 EG/TAAIL 混合物中可以得到尺寸为 2nm 至 5nm 的小初级 NPs。Pt-NPs 作为酸性条件下析氢反应（HER）的电催化剂具有极好的活性，在电流密度为 10mA cm 时的过电势低至 32 mV 相对于可逆氢电极（RHE），明显低于标准 Pt/C 20%的 42 mV。在 200°C 下仅 5 分钟，TAAILs 中获得的 Pt-NPs 也实现了苯乙炔与三乙硅烷的硅氢化反应的定量转化。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0916/9822459/892744339b83/molecules-28-00405-sch003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0916/9822459/1cd64bb5a4bb/molecules-28-00405-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0916/9822459/cdc4733a2a9e/molecules-28-00405-sch001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0916/9822459/e5ca228d82fd/molecules-28-00405-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0916/9822459/601881e1fc34/molecules-28-00405-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0916/9822459/cfa0a7c6c37e/molecules-28-00405-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0916/9822459/50008cac7d18/molecules-28-00405-sch002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0916/9822459/97ad7c1dcf31/molecules-28-00405-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0916/9822459/69a7bae70837/molecules-28-00405-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0916/9822459/46aeb70aeda2/molecules-28-00405-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0916/9822459/892744339b83/molecules-28-00405-sch003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0916/9822459/1cd64bb5a4bb/molecules-28-00405-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0916/9822459/cdc4733a2a9e/molecules-28-00405-sch001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0916/9822459/e5ca228d82fd/molecules-28-00405-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0916/9822459/601881e1fc34/molecules-28-00405-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0916/9822459/cfa0a7c6c37e/molecules-28-00405-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0916/9822459/50008cac7d18/molecules-28-00405-sch002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0916/9822459/97ad7c1dcf31/molecules-28-00405-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0916/9822459/69a7bae70837/molecules-28-00405-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0916/9822459/46aeb70aeda2/molecules-28-00405-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0916/9822459/892744339b83/molecules-28-00405-sch003.jpg

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