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青蛙要飞

铜虫 (小有名气)

[求助] 关于磷酸银光催化剂制备的问题 已有1人参与

我在利用银氨辅助法制备磷酸银立方晶体的过程中发现,低浓度时可以生成淡黄色沉淀,而在高浓度(提高十倍)时无沉淀生成,然后我将它进行加热,发现不同温度下,生成的沉淀颜色不一样。不知道是什么原因,希望能有高人指点下。
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sxlily

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【答案】应助回帖

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cxqtitan: 金币+1, 谢谢交流 2014-03-26 10:31:30
Ag3PO4 was synthesized by the ion-exchange method as follows. AgNO3 powder (0.075 mol) was dissolved in 500 mL of deionized H2O. Then, 0.1 mol/L of Na2HPO4 (250 mL) aqueous solution was added in drops into the above solution under continuous stirring until yellow precipitates were formed. Finally, the mixture was washed with distilled water and dried at 60 °C in air overnight.
我也是做磷酸银的,这是我的合成方法,光催化效果很高。你可以试试。
另外,你知道磷酸银的零电荷点(The pH of the point of zero charge (pHPZC))是多少吗?
2楼2014-03-14 20:27:54
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