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Iwase, A., H. Kato, and A. Kudo, Nanosized Au particles as an efficient cocatalyst for photocatalytic overall water splitting. Catalysis Letters 2006 108  p. 6.

ÆäÖÐÌáµ½°Ñ½ð¼ÓÔÚNaTaO3:LaÉÏ »îÐÔ¿ÉÒÔ´ó·ùÌáÉý£¬µ«ÊÇÁ½¸öСʱ×óÓÒ¿ªÊ¼Ê§»î
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It was thus revealed that the deactivation observed for Au(1 wt%)-loaded
NaTaO3:La in photocatalytic overall water splitting was not due to the back-reaction between evolved H2 and O2 but to the photoreduction of O2 on the Au cocatalyst.

ÇëÎÊphotoreduction of O2 on the Au cocatalyst ÊÇָʲôÒâ˼?
ÊÇÖ¸O2µÃµ½µç×Ó±ä³ÉO2-  È»ºóÓëAuÐγÉAu2O3 or ÆäËûAuÑõ»¯ÎïÂð?
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haha123123

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nxl5096224(½ð±Ò+1,VIP+0):лл²ÎÓëÌÖÂÛ~
i think you may dip in a wrong way of thinking , here,  the function of  Au  just like pt catalyst , in the presence of Pt, the back reaction, H2+ O2= H2O ,could take place, while Pt itself doesnot attend in this reaction.
2Â¥2007-12-27 22:15:23
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starfry

ľ³æ (СÓÐÃûÆø)

µ«ÊÇÎÄÖÐÒѾ­Ëµ : [was not] due to the back-reaction between evolved H2 and O2 ..
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3Â¥2007-12-28 00:57:55
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haha123123

½ð³æ (СÓÐÃûÆø)

O2 + e- = O2'-  and futher to produce other oxidative species such as OH.
but this reduction reaction takes place without H2 , so it is different from that back reaction
4Â¥2007-12-28 13:11:29
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