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polyoxometalate

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

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polyoxometalate: ½ð±Ò+10, ¸Ðл²ÎÓëÌÖÂÛ£¡ 2013-02-14 09:20:58
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per gram˵°×Á˽²ÊÇÀµÆ¤µÄ˵·¨£¬ÄÃ20mgÑùÆ·×ö²âÊÔ£¬È»ºó½á¹û³ËÒÔ50±¶£¿£¡Ò»£¬´ÓÎÒ¿´µ½µÄÎÄÏ׺ͷÃÎʹýµÄС×鶼ûÓÐÈËÄÃ1g²âÊԵģ¬Ð§¹û¿Ï¶¨²»ºÃ£»¶þ£¬20mgÊÇÕâ¸öЧÂÊ£¬1gºÜÓпÉÄÜÒ²¾ÍÁ½±¶Èý±¶µÄ²úÁ¿¡£
Èç¹û¿ÉÒÔÕâÑù¼ÆËãµÄ»°£¬ÎÒµÄÒ»¸öʦÐÖÓÐÒ»¸ö¹¤×÷ÊÇZnO-CdSÒìÖʽṹ²úÇ⣺100 mg sample; 300 W Xe lamp; 300 mL aqueous solution containing 0.1 m Na2S and 0.1 m Na2SO3.×î¸ß²úÁ¿ÊÇ1.92mmolÿСʱ¡£¼ÆËãÆðÀ´¾ÍÊÇ19.2mmolH2/hour¡££¨DOI: 10.1002/aenm.201100528£©

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9Â¥2013-02-13 20:18:55
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yanhj0

Ìú¸Ëľ³æ (ÖªÃû×÷¼Ò)


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pzypdl: ½ð±Ò+1, лл»ØÌû½»Á÷£¡ 2013-02-01 19:56:37
¾ø¶Ô²úÇâÁ¿ÊDz»¿É±ÈµÄ. ÒòΪ²»Í¬µÄʵÑéËùÓõĹâÔ´, ´ß»¯¼ÁÓÃÁ¿µÈ²»Ò»¶¨Ïàͬ,ËùÒÔûÓпɱÈÐÔ. Ò»°ã±È½ÏµÄÊÇÔÚijһ²¨³¤ÏµÄÁ¿×ÓЧÂÊ.
2Â¥2013-02-01 19:46:07
ÒÑÔÄ   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

doctorzyjunior

Í­³æ (СÓÐÃûÆø)


¡ï ¡ï
Сľ³æ: ½ð±Ò+0.5, ¸ø¸öºì°ü£¬Ð»Ð»»ØÌû
cxqtitan: ½ð±Ò+1, лл·ÖÏí 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 ¦Ë> 300 nm), and Cr/Rh-modified GaN/ZnO (QE = 2.5%, pure water, visible light).
ÓÃQE×ö²Î¿¼£¬±È½ÏÆðÀ´²Å(Ŀǰ¹«ÈÏ Angew. Chem. Int. Ed. 2010, 49, 1536-1539)ÓÐÒâÒå¡£ËùÒÔ£¬ÄãËùνµÄ¡°²úÇ⡱ÊýÁ¿ÊÇÒ»¸ö²»¾ßÓÐʵ¼ÊÒâÒåµÄÊýÖµ¡£¹éÒ»»¯ºÜÖØÒª¡£¾ÍºÃ±ÈÄãµ¥µ¥ÌÖÂÛ¡°TON¡±µÄ¶àÉÙ£¬Ô¶²»Èç¡°TOF¡±À´µÃÓпɱȽÏÐÔ¡£
3Â¥2013-02-03 04:49:08
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liuyinallen

Òø³æ (СÓÐÃûÆø)


¡ï ¡ï
Сľ³æ: ½ð±Ò+0.5, ¸ø¸öºì°ü£¬Ð»Ð»»ØÌû
cxqtitan: ½ð±Ò+1, лл·ÖÏí 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).
4Â¥2013-02-05 04:42:05
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