Pt nanoparticles embedded on reduced graphite oxide with excellent electrocatalytic properties
Pt nanoparticles embedded on reduced graphite oxide with excellent electrocatalytic properties
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DOI：
10.1016/j.apsusc.2016.05.152
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发表时间：
2016-11
影响因子：
6.7
通讯作者：
G. Saravanan;S. Mohan
中科院分区：
文献类型：
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作者：
G. Saravanan;S. Mohan
通过电沉积技术在还原氧化石墨（RGO）表面合成Pt纳米粒子，开发了一种经济可行的电化学方法。研究了在玻碳电极上包埋还原氧化石墨的铂纳米粒子（Pt- rgo /GCE）对甲酸的电氧化反应。扫描电镜（SEM）和透射电镜（TEM）图像显示，还原氧化石墨作为良好的载体锚定Pt纳米颗粒。循环伏安法结果证实，Pt-rGO/GCE电极对甲酸电氧化的电流密度比裸铂电极提高了数倍。Pt-石墨烯复合材料的x射线衍射（XRD）图表明，Pt（220）和石墨烯碳（002）的峰分别位于69.15°和23°。电化学还原氧化石墨共振的13C核磁共振谱在133ppm处只有一个峰，保留了石墨的sp2碳，不含任何氧合碳和羰基碳。
Economically viable electrochemical approach has been developed for the synthesis of Pt nanoparticles through electrodeposition technique on the surface of Reduced Graphite Oxide (RGO). Pt nanoparticles embedded Reduced Graphite Oxide on Glassy Carbon Electrode are employed (Pt-rGO/GCE) for electrooxidation of formic acid. Scanning Electron Microscopy (SEM) image and Transmission Electron Microscopy (TEM) image shows that reduced graphite oxide act as an excellent support to anchor the Pt nanoparticles. Cyclic voltammetry results confirmed that Pt-rGO/GCE enhanced current density as many folds than that of bare platinum electrode for electrooxidation of formic acid. X-ray diffraction (XRD) patterns for Pt-graphene composites illustrate that peaks at 69.15 and 23° for Pt (220) and graphene carbon (002) respectively.13C NMR spectrum of the electrochemically reduced graphite oxide resonance contains only one peak at 133 ppm which retains graphitic sp2carbon and does not contain any oxygenated carbon and the carbonyl carbons.