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liqingf335

木虫 (正式写手)

[交流] 请教:合成问题。

降解苯酚的实验

[ Last edited by liqingf335 on 2009-2-19 at 16:02 ]
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robby007

木虫 (小有名气)

引用回帖:
Originally posted by summer101 at 2007-5-24 11:58 AM:
楼主,我用P25做可见光催化聚合时,时间很长的话也会有反应的,你要考虑你的滤光片的问题,是紫外截止还是带通型的。紫外截止的滤光片其实有一部分紫外透过的,可能在380nm是透过20%,400nm透过5%一类的。带通型 ...

我们在上海一家买的滤光片,每一片我都做了光度透过测试,420nm的在400下没有光透过,另想问一下带通的滤光片在何处购买?
7楼2007-05-31 00:35:25
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kjsun

木虫 (正式写手)

★
linweiguo0(金币+1):thank u
首先,光源是否纯净的可见光
其次,即使是纯净的,P25也会吸收少量的紫光
2楼2007-05-21 17:09:31
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liqingf335

木虫 (正式写手)

linweiguo0(金币+0):对于应助者 楼主要客气点比较好哦
引用回帖:
Originally posted by kjsun at 2007-5-21 05:09 PM:
首先,光源是否纯净的可见光
其次,即使是纯净的,P25也会吸收少量的紫光

可能不是纯的可见光,还有其它的原因嘛?首先与其次你说的是一个意思啊。
3楼2007-05-21 17:15:24
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hot_cool

金虫 (小有名气)

★ ★
rabbit7708(金币+2):多谢应助,辛苦了!:)
P25 is a mixture of 30% rutile and 70% anatase.
The band gap energy is 3.0 eV for rutile and 3.2 eV for anatase. Although the band gap energy of P25 has been reported as 3.2 eV in most literature, this is not necessarily true. In fact, the band gap energy can be anywhere between 3.0 and 3.2 eV depending on which company the P25 is supplied by. In that case, if we calculate the activation wavlength from 1240/Ebg, we can tell there is a chance for P25 to be active under the visible light.
4楼2007-05-22 09:49:38
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