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N-S共掺杂TiO2具有最高光催化活性的原因主要是：N和S是以Ti-N、 Ti-S的形式共掺杂到N-S共掺杂TiO2的晶格中，N2p轨道及S3p轨道与O2p轨道杂化，使得反键轨道在带隙中更深，减小了TiO2的禁带宽度，促进光催化剂对可见光的吸收，并且其晶粒尺寸最小，金红石相和锐钛矿相比例适当，能有效提高光生载流子的分离效率，从而促进其光催化活性的提高。 请不要直接复制翻译软件结果！！！ |
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3楼2009-10-01 15:32:21
"使得反键轨道在带隙中更深" 应是落在TiO2能隙中吧？是按你原文翻译的。
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风雨182(金币+15,VIP+0): 9-30 16:01
风雨182(金币+15,VIP+0): 9-30 16:01
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The reasons for the N+S co-doped TiO2 catalyst to possess the highest photo catalysis are: 1. Elements of N and S together enter into the N+S co-doped TiO2 crystal structure by taking the forms of Ti-N bonds and Ti-S bonds. The orbit hybridization between N2p and O2p as well as between S3p and O2p makes the anti-bonding orbit even deeper in the energy gap, which decreases the forbidden gap of TiO2 and promote the optical absorption of the photo catalyst in the visible light band. 2. Both the littlest average grain size and the appropriate ratio between the anatase phase and rutile phase can increase the separation efficiency of the photon-induced carriers and thus enhance the photo catalysis. |
2楼2009-09-28 16:13:33
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