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有机改性TiO2光催化剂的制备及可见光催化性能
引用本文:姜东,徐耀,侯博,吴东,孙予罕.有机改性TiO2光催化剂的制备及可见光催化性能[J].化学学报,2007,65(14):1289-1293.
作者姓名:姜东  徐耀  侯博  吴东  孙予罕
作者单位:1. 中国科学院山西煤炭化学研究所煤转化国家重点实验室,太原,030001;中国科学院研究生院,北京,100049
2. 中国科学院山西煤炭化学研究所炭材料重点实验室,太原,030001
3. 中国科学院山西煤炭化学研究所煤转化国家重点实验室,太原,030001
摘    要:以染料黄叱精(Chrysoidine G)和TiO2 (Degussa P25)为原料, 利用甲苯二异氰酸酯为桥连体, 成功合成了一种有机改性的TiO2光催化剂. 采用XRD, TEM, FT-IR, UV-Vis对所得催化剂进行了表征, 以亚甲基蓝降解为探针反应, 考察其可见光催化性能. 结果表明: 甲苯二异氰酸酯在黄叱精和TiO2之间形成了稳定的化学键, 从而实现了对TiO2的表面有机改性; 改性后的TiO2在可见光区(400~550 nm)有明显的吸收; 与未改性TiO2相比, 有机改性的TiO2催化剂在可见光照射下表现出了很好的光催化性能.

关 键 词:TiO2  有机改性  可见光催化  制备
收稿时间:2006-12-15
修稿时间:2006-12-152007-06-03

Synthesis of Organically Hybridized TiO2 Photocatalyst and Its Photocatalytic Activity under Visible Light Irradiation
JIANG Dong,XU Yao,HOU Bo,WU Dong,SUN Yu-Han.Synthesis of Organically Hybridized TiO2 Photocatalyst and Its Photocatalytic Activity under Visible Light Irradiation[J].Acta Chimica Sinica,2007,65(14):1289-1293.
Authors:JIANG Dong  XU Yao  HOU Bo  WU Dong  SUN Yu-Han
Institution:1. State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001;2. Graduate School of the Chinese Academy of Sciences, Beijing 100049;3. Key Laboratory of Carbon Material, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001
Abstract:An organically hybridized TiO2 photocatalyst was successfully synthesized using a dye chrysoidine G, tolylene-2,4-diisocyanate and Degussa P25 as starting materials. Tolylene-2,4-diisocyanate was used as a connecter, and one —NCO reacted with Ti—OH and the other with the dye. The as-prepared catalyst was characterized by XRD, TEM, IR and UV-visible and its photocatalytic activity was evaluated by the degradation of methylene blue under visible light. The results showed that stable chemical bonds were formed through the above-mentioned reaction and an organically hybridized photocatalyst was prepared. The obtained catalyst showed an obvious absorption in visible region (400~550 nm). Compared with unmodified TiO2, the organically hydridized TiO2 exhibited largely enhanced activity for photocatalytic degradation of methylene blue under visible light irradiation.
Keywords:TiO2  organically hybridized  visible photocatalysis  preparation
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