Protonated g-C3N4 nanorod loaded with Ag(Ag/pCN)materials were prepared.The photocatalytic degra-dation of methylene blue(MB)solution was compared between g-C3N4(CN),CN loaded with Ag(Ag/CN),pCN,and Ag/pCN under visible light.Ag/pCN had the highest photocatalytic efficiency of 92.63％and exhibited good stability.The mechanism of photocatalytic degradation of MB by Ag/pCN was investigated through the photocurrent-time(I-t)curve,Nyquist curve,Mott-Schokkty curve,and capture experiment.Although the π conjugated system of pCN was disrupted,the synergistic effect of forming nanorods,increasing specific surface area,and loading Ag resulted in the excellent photocatalytic performance of Ag/pCN.Hydroxyl radicals(·OH)are the main active substances in the pho-tocatalytic process.The active substance OH is produced by the reaction of photo-generated electrons(e-)with O2,as well as photo-generated holes(h+)with H2O or OH-.
万方数据