کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1732519 | 1521472 | 2014 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Comparison between graphene supported Pt hollow nanospheres and graphene supported Pt solid nanoparticles for hydrogen evolution reaction Comparison between graphene supported Pt hollow nanospheres and graphene supported Pt solid nanoparticles for hydrogen evolution reaction](/preview/png/1732519.png)
• Pt hollow nanospheres on graphene support (HNPt/G) were prepared.
• For comparison solid Pt nanoparticles on graphene support (NPt/G) were fabricated.
• Physical and electrochemical properties of HNPt/G and NPt/G were investigated.
• HER (Hydrogen evolution reaction) was investigated at HNPt/G and NPt/G.
• HNPt/G shows better electrocatalytic activity toward HER than NPt/G.
Platinum hollow nanospheres are synthesized by Co nanoparticles as sacrificial template and then immobilized on graphene nanosheets (HNPt/G). The as-prepared nanostructure is characterized by TEM (transmission electron microscopy) and EDX (energy dispersion X-ray spectroscopy). The prepared HNPt/G is used as electrocatalyst for HER (hydrogen evolution reaction). For this purpose, GC (glassy carbon) electrode modified by HNPt/G was fabricated (HNPt/G/GC). Electrochemical studies show that HNPt/G has a good electrocatalytic activity toward HER. For comparison solid Pt nanoparticles were synthesized and decorated on graphene (NPt/G). The HNPt/G exhibit an enhanced electrocatalytic performance for HER compared with NPt/G.
Journal: Energy - Volume 74, 1 September 2014, Pages 871–876