以工业TiO2为原料,在不同氨气浓度下采用热处理法制备了N掺杂的光催化剂.用XRD,TEM,XPS,UV-visDRS和PL等对其结构进行了表征,以亚甲基蓝为目标化合物,评价了其可见光催化活性.结果表明,当氨气浓度为99％时,工业TiO2在500℃下煅烧3h后,具有优良的可见光催化活性,对亚甲基蓝的去除率达到93％.当煅烧温度升高到600℃后,TiO2的晶相由锐钛矿向金红石转变,随着煅烧过程中氨气浓度的增加,所制备的催化剂对亚甲基蓝的降解显著增加.
参考文献
| [1] | Akira Fujishima;Tata N. Rao;Donald A. Tryk .Titanium dioxide photocatalysis[J].Journal of photochemistry and photobiology, C. Photochemistry reviews,2000(1):1-21. |
| [2] | Hiroshi Irie;Yuka Watanabe;Kazuhito Hashimoto .Carbon-doped Anatase TiO_2 Powders as a Visible-light Sensitive Photocatalyst[J].Chemistry Letters,2003(8):772-773. |
| [3] | Masahiko Maeda;Teruyoshi Watanabe .Visible Light Photocatalysis of Nitrogen-Doped Titanium Oxide Films Prepared by Plasma-Enhanced Chemical Vapor Deposition[J].Journal of the Electrochemical Society,2006(3):C186-C189. |
| [4] | Batzill M;Morales EH;Diebold U .Influence of nitrogen doping on the defect formation and surface properties of TiO2 rutile and anatase[J].Physical review letters,2006(2):6103-1-6103-4-0. |
| [5] | Zhongbiao Wu;Fan Dong;Weirong Zhao;Sen Guo .Visible light induced electron transfer process over nitrogen doped TiO_2 nanocrystals prepared by oxidation of titanium nitride[J].Journal of hazardous materials,2008(1):57-63. |
| [6] | Shu Yin;Hiroshi Yamaki;Masakazu Komatsu;Qiwu Zhang;Jinshu Wang;Qing Tang;Fumio Saito;Tsugio Sato .Preparation of nitrogen-doped titania with high visible light induced photocatalytic activity by mechanochemical reaction of titania and hexamethylenetetramine[J].Journal of Materials Chemistry: An Interdisciplinary Journal dealing with Synthesis, Structures, Properties and Applications of Materials, Particulary Those Associated with Advanced Technology,2003(12):2996-3001. |
| [7] | Livraghi S;Paganini MC;Giamello E;Selloni A;Di Valentin C;Pacchioni G .Origin of photoactivity of nitrogen-doped titanium dioxide under visible light[J].Journal of the American Chemical Society,2006(49):15666-15671. |
| [8] | K. Bhattacharyya;S. Varma;A. K. Tripathi .Effect of Vanadia Doping and Its' Oxidation State on the Photocatalytic Activity of TiO2 for Gas-Phase Oxidation of Ethene[J].The journal of physical chemistry, C. Nanomaterials and interfaces,2008(48):19102-19112. |
| [9] | Hua Wang;Xie Quan;Hongtao Yu .Fabrication of a TiO2/carbon nanowall heterojunction and its photocatalytic ability[J].Carbon: An International Journal Sponsored by the American Carbon Society,2008(8):1126-1132. |
| [10] | Yu JG;Wang GH;Cheng B;Zhou MH .Effects of hydrothermal temperature and time on the photocatalytic activity and microstructures of bimodal mesoporous TiO2 powders[J].Applied Catalysis, B. Environmental: An International Journal Devoted to Catalytic Science and Its Applications,2007(3/4):171-180. |
| [11] | Fan Dong;S.C. Lee;Zhongbiao Wu;Yu Huang;Min Fu;Wing-Kei Ho;Shichun Zou;Bo Wang.Rose-like monodisperse bismuth subcarbonate hierarchical hollow microspheres: One-pot template-free fabrication and excellent visible light photocatalytic activity and photochemical stability for NO removal in indoor air[J].Journal of hazardous materials,2011:346-354. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%