Sunlight Photodeposition of Gold nanoparticles onto Graphitic Carbon Nitride(g-C3N4)and Application Towards the Degradation of Bisphenol A

摘要

Gold(Au)nanoparticles(NPs)were successfully deposited onto the surface of graphitic carbon nitride(g-C3N4)by using natural sunlight.Bisphenol A(BPA)were adopted as a pollutant with different pH condition to indicate the photocatalytic performance under natural sunlight.The presence of Au NPs(8.8 nm)was confirmed by TEM and XPS characterization.The duration for degraded BPA in pH 3 was 30 minutes faster than the normal degradation rate which is pH 7.This is due to the point of zero charge(PZC)properties of g-C3N4,contributing to better adsorption capacity efficiency and promoted the contact between photocatalysts and pollutants.The pH condition of BPA will affect the degradation efficiency,hence lower down pH condition of BPA can increase the photocatalytic performance.