Abstract: ZnS/g-C3N4 samples were successfully synthesized via coprecipitation method,and performed on the photodegredation mechanism of rhodamine B under visible-light region.The as-prepared samples were characterized by several techniques such as TEM,BET,XRD,ICP,FT-IR and XPS.The results show that the activity of the catalyst with loading 5wt; ZnS is the best;after four recycle experiments,the photocatalytic activity of the samples is not significantly inactivate.It is attributed that the herterojunction formed by ZnS and g-C3N4 compound improve the photocatalytic activity.

Key words: ZnS/g-C3N4 samples were successfully synthesized via coprecipitation method,and performed on the photodegredation mechanism of rhodamine B under visible-light region.The as-prepared samples were characterized by several techniques such as TEM,BET,XRD,ICP,FT-IR and XPS.The results show that the activity of the catalyst with loading 5wt; ZnS is the best;after four recycle experiments,the photocatalytic activity of the samples is not significantly inactivate.It is attributed that the herterojunction formed by ZnS and g-C3N4 compound improve the photocatalytic activity.