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用于甲醇氧化的纳米复合材料：石墨烯片上立方铂纳米颗粒的合成与表征

Nanocomposite for methanol oxidation: synthesis and characterization of cubic Pt nanoparticles on graphene sheets.

作者信息

Yung Tung-Yuan, Lee Jer-Yeu, Liu Ling-Kang

机构信息

Department of Physics, National Central University, 300 Jhongda Road, Jhongli, Taoyuan 320, Taiwan, Republic of China; Molecular Science and Technology, Taiwan International Graduate Program, and Institute of Chemistry, Academia Sinica, 128 Academia Road, Section 2, Nankang, Taipei 115, Taiwan, Republic of China; Division of Nuclear Fuels and Materials, Institute of Nuclear Energy Research, 1000 Wenhua Road, Longtan, Taoyuan 325, Taiwan, Republic of China.

Department of Chemistry, National Taiwan University, 1 Roosevelt Road, Section 4, Taipei 106, Taiwan, Republic of China.

出版信息

Sci Technol Adv Mater. 2013 May 15;14(3):035001. doi: 10.1088/1468-6996/14/3/035001. eCollection 2013 Jun.

DOI:10.1088/1468-6996/14/3/035001
PMID:27877574
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5090505/
Abstract

We present our recent results on Pt nanoparticles on graphene sheets (Pt-NPs/G), a nanocomposite prepared with microwave assistance in ionic liquid 2-hydroxyethanaminiumformate. Preparation of Pt-NPs/G was achieved without the addition of extra reductant such as hydrazine or ethylene glycol. The Pt nanoparticles on graphene have a cubic-like shape (about 60 wt% Pt loading, Pt-NPs/G) and the particle size is 6 ± 3 nm from transmission electron microscopy results. Electrochemical cyclic voltammetry studies in 0.5 M aqueous HSO were performed using Pt-NPs/G and separately, for comparison, using a commercially available electrocatalyst (60 wt% Pt loading, Pt/C). The electrochemical surface ratio of Pt-NPs/G to Pt/C is 0.745. The results of a methanol oxidation reaction (MOR) in 0.5 M aqueous HSO + 1.0 M methanol for the two samples are presented. The MOR results show that the ratios of the current density of oxidation () to the current density of reduction () are 3.49 (Pt-NPs/G) and 1.37 (Pt/C), respectively, with a preference by 2.55 times favoring Pt-NPs/G. That is, the tolerance CO poisoning of Pt-NPs/G is better than that of commercial Pt/C.

摘要

我们展示了我们最近关于石墨烯片上的铂纳米颗粒（Pt-NPs/G）的研究成果，这是一种在离子液体甲酸2-羟乙铵中通过微波辅助制备的纳米复合材料。Pt-NPs/G的制备无需添加额外的还原剂，如肼或乙二醇。从透射电子显微镜结果来看，石墨烯上的铂纳米颗粒呈立方状（铂负载量约为60 wt%，即Pt-NPs/G），粒径为6±3 nm。在0.5 M的HSO水溶液中，分别使用Pt-NPs/G以及作为对比的市售电催化剂（铂负载量60 wt%，即Pt/C）进行电化学循环伏安研究。Pt-NPs/G与Pt/C的电化学表面比为0.745。给出了两个样品在0.5 M的HSO水溶液+1.0 M甲醇中的甲醇氧化反应（MOR）结果。MOR结果表明，氧化电流密度（）与还原电流密度（）之比分别为3.49（Pt-NPs/G）和1.37（Pt/C），Pt-NPs/G的优势是Pt/C的2.55倍。也就是说，Pt-NPs/G对CO中毒的耐受性优于市售的Pt/C。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/008b/5090505/199e3467d772/TSTA11661366F07.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/008b/5090505/0a520b9d2981/TSTA11661366F08.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/008b/5090505/99400847c945/TSTA11661366F01.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/008b/5090505/ffd86f0153b1/TSTA11661366F02.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/008b/5090505/ee2da692b68a/TSTA11661366F09.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/008b/5090505/da3d29fe6adf/TSTA11661366F03.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/008b/5090505/ec66f888b8bc/TSTA11661366F04.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/008b/5090505/22f99e582a7e/TSTA11661366F05.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/008b/5090505/ae5b35e4a084/TSTA11661366F06.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/008b/5090505/199e3467d772/TSTA11661366F07.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/008b/5090505/0a520b9d2981/TSTA11661366F08.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/008b/5090505/99400847c945/TSTA11661366F01.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/008b/5090505/ffd86f0153b1/TSTA11661366F02.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/008b/5090505/ee2da692b68a/TSTA11661366F09.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/008b/5090505/da3d29fe6adf/TSTA11661366F03.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/008b/5090505/ec66f888b8bc/TSTA11661366F04.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/008b/5090505/22f99e582a7e/TSTA11661366F05.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/008b/5090505/ae5b35e4a084/TSTA11661366F06.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/008b/5090505/199e3467d772/TSTA11661366F07.jpg

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