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ÊÇÎÒ×Ô¼ºµÄÂÛÎÄ£¬ÆäÖÐÒ»¶ÎÉæ¼°µ½¼¸¸ö°Ù·ÖÊý£º ÖÐÎÄÒâ˼ÊÇÕâÑùµÄ£ºÈ¥µôÖ±½Ó¹â½â²úÉúµÄ10.8%£¬Ì«Ñô¹â£¨ÊÂʵÉÏÖ»ÓÐ×ÏÍâ¹âÆð×÷Óã¬ÒòΪ¿É¼û¹â²»Äܼ¤·¢TiO2£©¼¤·¢TiO2²úÉúµÄPNPÈ¥³ýЧÂÊΪ36.5% (ÇúÏß5)¡£ ¶øÈ¥µôÖ±½Ó¹â½â²úÉúµÄ10.8%ºÍ¿É¼û¹â´ß»¯ÏµÄ39.5%£¬ ×ÏÍâ¹â¼¤·¢Cu2O/TiO2 ¹â´ß»¯¼Á²úÉúµÄPNPÈ¥³ýЧÂÊΪ45.5%¡£ ÓëTiO2 ÄÉÃ×¹ÜÏà±È£¬Ôö³¤µÄ9%Ö÷Òª¹éÒòÓÚCu2O/TiO2 p-nÒìÖʽṹÔìÄÜÌá¸ß¹âÉú¿ÕѨ-µç×Ó£¨h-e£©µÄ·ÖÀëЧÂÊ¡£ ÎÒµÄÔÎÄ£ºSubtracting the part of 10.8 % from direct photodegradation, the remove efficiency( RE) of PNP under solar light (actually only the UV light works because the visible cannot excite TiO2) is 36.5% on TiO2 NTs based on curve 5. However, the RE is increased to be 45.5% under UV light on the Cu2O/TiO2 networks by subtracting the 10.8% from the direct photodegradation and the 39.5% from visible light irradiation. Compared with the TiO2 NTs, the increase by 9% is attributed to the improved separation of h-e pairs resulting from the p-n heterojunction on the Cu2O/TiO2 photocatalyst. [ Last edited by mtzh on 2010-8-14 at 20:47 ] |
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mtzh
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