Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1732519 | Energy | 2014 | 6 Pages |
•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.