Abstract
Through adjusting the pH of the silver ammonia solution (Ag(NH3)2OH), different microstructure of silver phosphate (Ag3PO4) was prepared via simple precipitation method. The effect of pH on the microstructure and photocatalytic properties was studied. Preliminary results indicate that the pH of silver ammonia solution played a key role in crystal growth and microstructure of Ag3PO4. When the pH is 9, the preferential crystal growth of the Ag3PO4 oriented along the (1 1 0) crystal surface. Thus, the cubic Ag3PO4 shows excellent photocatalytic properties. Based on the Ostwald’s ripening rule, a possible formation mechanism of cubic Ag3PO4 was proposed.
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