https://scholars.lib.ntu.edu.tw/handle/123456789/425103
標題: | Characterization of Au and Bimetallic PtAu Nanoparticles on PDDA-Graphene Sheets as Electrocatalysts for Formic Acid Oxidation | 作者: | Yung, Tung Yuan Liu, Ting Yu Huang, Li Ying Wang, Kuan Syun Tzou, Huei Ming Chen, Po Tuan CHI-YANG CHAO Liu, Ling Kang |
關鍵字: | Au nanoparticle | Bimetallic PtAu nanoparticle | Formic acid oxidation | Graphene | PDDA | 公開日期: | 24-十二月-2015 | 出版社: | SPRINGER | 卷: | 10 | 期: | 1 | 來源出版物: | Nanoscale Research Letters | 摘要: | © 2015, Yung et al. Nanocomposite materials of the Au nanoparticles (Au/PDDA-G) and the bimetallic PtAu nanoparticles on poly-(diallyldimethylammonium chloride) (PDDA)-modified graphene sheets (PtAu/PDDA-G) were prepared with hydrothermal method at 90 °C for 24 h. The composite materials Au/PDDA-G and PtAu/PDDA-G were evaluated by transmission electron microscopy (TEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and thermogravimetric analysis (TGA) for exploring the structural characterization for the electrochemical catalysis. According to TEM results, the diameter of Au and bimetallic PtAu nanoparticles is about 20–50 and 5–10 nm, respectively. X-ray diffraction (XRD) results indicate that both of PtAu and Au nanoparticles exhibit the crystalline plane of (111), (200), (210), and (311). Furthermore, XRD data also show the 2°–3° difference between pristine graphene sheets and the PDDA-modified graphene sheets. For the catalytic activity tests of Au/PDDA-G and PtAu/PDDA-G, the mixture of 0.5 M aqueous H |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/425103 | ISSN: | 19317573 | DOI: | https://api.elsevier.com/content/abstract/scopus_id/84942091480 10.1186/s11671-015-1071-4 |
顯示於: | 材料科學與工程學系 |
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