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| TiO_(2-x)N_x/硅藻土复合光催化剂的制备及其可见光催化活性 | |
| 引用本文： | 危琼辉,沈翔,夏勇,柳艳. TiO_(2-x)N_x/硅藻土复合光催化剂的制备及其可见光催化活性[J]. 西南科技大学学报, 2011, 26(2) |
| 作者姓名： | 危琼辉 沈翔 夏勇 柳艳 |
| 作者单位： | 1. 西南科技大学学报编辑部，四川绵阳，621010 2. 中国地质大学(武汉)材料科学与化学工程学院＆教育部纳米矿物材料及应用工程研究中心，湖北武汉，430074；中南民族大学催化材料科学湖北省暨国家民委-教育部共建重点实验室，湖北武汉，430074 3. 攀枝花市环保局，四川攀枝花，617000 4. 益阳市六中初中部，湖南益阳，413000 |
| 基金项目： | 催化材料科学湖北省暨国家民委—教育部共建重点实验室开放课题(CHCL10003); 中国博士后科学基金资助项目(20090451092) |
| 摘 要： | 以尿素为氮源,硅藻土为载体,用溶胶-凝胶法合成了硅藻土负载氮掺杂纳米TiO_2复合光催化剂。采用XRD,UV-vis对样品进行了表征;以罗丹明B为降解对象,考察了罗丹明B初始浓度、催化剂投加量、溶液初始pH值对降解率的影响,同时考察了样品在太阳光下的光催化活性。结果表明,掺氮TiO_2经450℃焙烧2 h后为锐钛矿型,N掺杂使催化剂的吸收边红移至550 nm左右,诱发TiO_2可见光催化活性;当催化剂用量为2 g/L,溶液初始pH值为6.5时,初始浓度为10 mg/L的罗丹明B在氙灯光照45 min后降解率为100%,太阳光照160 min后降解率为97.4%。 |
| 关 键 词： | 硅藻土 二氧化钛 氮掺杂 光催化 |
Photocatalytic Degradation of Rhodamine B with TiO_(2-x)N_x/diatomite |
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| WEI Qiong-hui,SHEN Xiang,XIA Yong,LIU Yan. Photocatalytic Degradation of Rhodamine B with TiO_(2-x)N_x/diatomite[J]. Journal of Southwest University of Science and Technology, 2011, 26(2) | |
| Authors: | WEI Qiong-hui SHEN Xiang XIA Yong LIU Yan |
| Affiliation: | WEI Qiong-hui~1,SHEN Xiang~(2,3),XIA Yong~4,LIU Yan~5 (1.Journal Editorial Department,Southwest University of Science and Technology,Mianyang 621010,Sichuan,China,2.College of Material Science and Chemical Engineering&Engineering Research Center of Nano-geomaterials of Ministry of Education,China University of Geosciences,Wuhan 430074,Hubei,3.Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission&Ministry of Education,Hubei Province,South-Central University for Nati... |
| Abstract: | The N doped and nano-sized TiO_2 immobilized on diatomite were prepared by the sol-gel method with urea as the nitrogen source.The samples were characterized by XRD and UV-vis absorbance spectra.The photocatalytic activity of the photocatalyst was investigated using rhodamine B as the photo-degrading compound;the effects of the concentration of rhodamine B,the amount of catalyst,pH value and the photocatalytic activity under sunlight were investigated.The results indicate that crystal phase of the N-doped T... |
| Keywords: | Diatomite TiO_2 Nitrogen doping Photocatalysis |
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