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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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helenhao

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引用回帖:
Originally posted by hot_cool at 2007-5-22 09:49:
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 ...

能否告知该文献出处?我做P25降解甲基橙时,活性也很好,很是郁闷,用的时420nm的滤光片
9楼2007-05-31 10:35:39
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kjsun

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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

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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

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★ ★
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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