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polyoxometalate

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[交流] 请问已报道的光催化产氢最多是多少?10 mmol per hour per gram of photocatalysts

请问已报道的光催化产氢最多是多少?有比10 mmol per hour per gram of photocatalysts更多的报道吗?

[ Last edited by pzypdl on 2013-2-19 at 22:24 ]
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liuyinallen

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cxqtitan: 金币+1, 谢谢分享 2013-02-05 08:05:48
Agreed with "doctorzyjunior" said.
FYI, please check some references from Dr. Kudo's group, Dr. Domen's group and Dr. H. Teng's group (from National Cheng Kung University, Taiwan). I did some water splitting exp. using optimized Kudo's catalyst (NiO-NaTaO3:La). The max H2 evolution rate I observed is  ~10mmol/hr.gcat (pure water, low pressure UV lamp  90% ouput at 254 nm).
4楼2013-02-05 04:42:05
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yanhj0

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pzypdl: 金币+1, 谢谢回帖交流! 2013-02-01 19:56:37
绝对产氢量是不可比的. 因为不同的实验所用的光源, 催化剂用量等不一定相同,所以没有可比性. 一般比较的是在某一波长下的量子效率.
2楼2013-02-01 19:46:07
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doctorzyjunior

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cxqtitan: 金币+1, 谢谢分享 2013-02-03 13:12:31
Ref: Chem. Mater. 2008, 20, 35-54
Current record holders in therms of quantum efficiencies (QEs) are NiO-modified La/KTaO3 (QE = 56%, pure water, UV light), ZnS (QE = 90%, aqueous Na2S/Na2SO3, light with λ> 300 nm), and Cr/Rh-modified GaN/ZnO (QE = 2.5%, pure water, visible light).
用QE做参考,比较起来才(目前公认 Angew. Chem. Int. Ed. 2010, 49, 1536-1539)有意义。所以,你所谓的“产氢”数量是一个不具有实际意义的数值。归一化很重要。就好比你单单讨论“TON”的多少,远不如“TOF”来得有可比较性。
3楼2013-02-03 04:49:08
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polyoxometalate

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4楼: Originally posted by liuyinallen at 2013-02-05 04:42:05
Agreed with "doctorzyjunior" said.
FYI, please check some references from Dr. Kudo's group, Dr. Domen's group and Dr. H. Teng's group (from National Cheng Kung University, Taiwan). I did s ...

10mmol/hr.gcat是最大吗?
5楼2013-02-05 14:12:29
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