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Science ×î½ü·¢±íXiaobo ChenµÄ¹ØÓÚÇ⻯ÄÉÃ×TiO2µÄÎÄÕ¡£¼ÇµÃÒÔǰ¿´¹ýµÄÇ⻯´¦ÀíTiO2µÄÎÄÕ±¨µÀ˵£¬Ç⻯TiO2¿ÉÒÔÎüÊտɼû¹âÖ÷ÒªÊÇÓÉÓÚÓдóÁ¿µÄÑõ¿Õ루»òÈý¼ÛîÑ£©´æÔÚ£¬²¢ÇÒ´¦Àíζȶ¼½Ï¸ß¡£ÕâÆªÎÄÕÂÊÇÔÚ200¶ÈµÍδ¦Àí£¬Ê¹¾§Ì¬TiO2±íÃæÎÞÐò»¯´Ó¶øÊ¹Ç⻯ÄÉÃ×TiO2µÄÎüÊÕÖµÍØÕ¹µ½½ü900nm¡£²¢ÇÒÔÚ¹â´ß»¯ÊÔÑéÖУ¬Ç⻯ÄÉÃ×TiO2±íÏÖ³öºÜ¸ßµÄÎȶ¨ÐÔ¡£
When used as a photocatalyst, titanium dioxide (TiO2)
absorbs only ultraviolet (UV) light, and several
approaches, including the use of dopants such as nitrogen,
have been taken to narrow the band gap of TiO2. We
demonstrate a conceptually different approach to
enhancing solar absorption by introducing disorder in the
surface layers of nanophase TiO2 through hydrogenation.
We show that disorder-engineered TiO2 nanocrystals
exhibit substantial solar-driven photocatalytic activities,
including the photo-oxidation of organic molecules in
water and producing hydrogen with the use of sacrificial
donor¡£¡£¡£
ÎÄÕÂÌâÄ¿£ºIncreasing Solar Absorption for Photocatalysis with Black, Hydrogenated
Titanium Dioxide Nanocrystals£¨È«ÎÄÏÂÔØ¼û5Â¥£©
DOI: 10.1126/science.1200448

[ Last edited by dy322112 on 2011-1-25 at 10:57 ]
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