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senceli

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[交流] 磷酸银呈黄绿色 已有3人参与

如题。硝酸银与磷酸氢二钠反应,总感觉生成的磷酸银是换绿色,这是为什么呢?小伙伴们求解答
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xxq781026

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避光反应就没有绿色了,溶液中还残留大量银离子被还原了
2楼2013-11-12 15:33:43
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sxlily

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因为磷酸银光敏性较好,在反应过程中尽量避光进行,在太阳光照射下,几小时内磷酸银就会变色。
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.我用这个方法合成的是亮黄色的,催化效果较好,你可以试试。
另外,请问你知道磷酸银的零电荷点(The pH of the point of zero charge (pHPZC))是多少吗?
3楼2014-03-14 20:33:07
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senceli

银虫 (小有名气)

引用回帖:
3楼: Originally posted by sxlily at 2014-03-14 20:33:07
因为磷酸银光敏性较好,在反应过程中尽量避光进行,在太阳光照射下,几小时内磷酸银就会变色。
Ag3PO4 was synthesized by the ion-exchange method as follows. AgNO3 powder (0.075 mol) was dissolved in 500 m ...

嗯 ,我不知道噢
Stayhungry,stayfooiish.
4楼2014-03-21 13:22:34
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liuhaijun520

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引用回帖:
3楼: Originally posted by sxlily at 2014-03-14 20:33:07
因为磷酸银光敏性较好,在反应过程中尽量避光进行,在太阳光照射下,几小时内磷酸银就会变色。
Ag3PO4 was synthesized by the ion-exchange method as follows. AgNO3 powder (0.075 mol) was dissolved in 500 m ...

你的磷酸银制备出来光催化了哪些染料,效果怎么样?有没有制备的参考文献发一下
5楼2021-04-17 10:29:02
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