Native defects in silver orthophosphate could be generated by simple co-precipitation method under ethanol-aqueous solution using AgNO 3 and Na 2 HPO 4 .12H 2 O. AgNO 3 ethanol-aqueous solution with the ethanol contents of 0%, 25%, 50%, 75%, 90% and 100% was reacted with Na 2 HPO 4 aqueous solution. The produced catalysts were characterized using XRD, DRS, FE-SEM, BET specific surface area and XPS. The increase of ethanol content in the synthesis process decreased the Ag/P atomic ratio of Ag 3 PO 4 . The native defects of silver vacancy might be generated on the surface of Ag 3 PO 4 . The activity of Ag 3 PO 4 for Rhodamine B degradation dramatically increased by 5.8 times higher compared to that of the pristine Ag 3 PO 4 . The defect states of Ag vacancies enhanced the separation of electron-hole pairs, leading to the improvement of photocatalytic activity.
- Silver orthophosphate
- Silver vacancy