By using graphitic carbon nitride nanosheet(g-C_3N_(4 )nanosheet)as a support,Pt/g-C_3N_(4 )nanosheet catalyst was fabricated by microwave assisted polylol process.The nanoparticles size,composition,structure and optical properties of Pt/g-C_3N_4 nanosheet were characterized by TEM,XRD,XPS and UV-Vis diffuse reflectance spectroscopy.Comparing with the catalytic activities toward formic acid electro-oxidation under dark and visible light illumination,the superior activity of Pt/g-C_3N_4 nanosheet catalyst wa...