采用一步溶胶-凝胶法,以四氯化钛、钛酸四丁酯为钛基前驱体,间苯二酚、糠醛为有机相前驱物,制备出TiO2/有机杂化湿凝胶.湿凝胶经溶剂交换、超临界干燥、高温炭化等处理得到TiO2/C杂化气凝胶.利用X射线衍射、透射电子显微镜及N2吸附-脱附等方法对气凝胶的晶型结构、微观形貌及孔结构分布进行表征.通过对亚甲基蓝的光催化降解考察样品的光催化性能.结果表明,钛源前驱体种类及其浓度对亚甲基蓝的光催化降解效率影响较大.相对于以钛酸四丁酯为钛源制备的TiO2/C杂化气凝胶,以四氯化钛为钛源制备的TiO2/C杂化气凝胶对亚甲基蓝的光催化效果更好.以四氯化钛为钛源,以TiO2计的钛源与碳源质量之比为0.38时所制样品具有最佳的性能,其最大平均孔径为7.8nm,最大介孔孔容为0.40 cm3/g,180min对亚甲基蓝光催化降解率达99.6％.
参考文献
| [1] | In-Cheol Kang;Qiwu Zhang;Shu Yin .Preparation of a visible sensitive carbon doped TiO2 photo-catalyst by grinding TiO2 with ethanol and heating treatment[J].Applied Catalysis, B. Environmental: An International Journal Devoted to Catalytic Science and Its Applications,2008(1/2):81-87. |
| [2] | Ming Li;Shifeng Zhou;Yuewei Zhang;Guangqin Chen;Zhanglian Hong .One-step Solvothermal Preparation Of Tio_2/c Composites And Their Visible-light Photocatalytic Activities[J].Applied Surface Science: A Journal Devoted to the Properties of Interfaces in Relation to the Synthesis and Behaviour of Materials,2008(13):3762-3766. |
| [3] | 因博,王际童,徐伟,龙东辉,乔文明,凌立成.中孔炭负载二氧化钛光催化剂的制备及降解甲基橙[J].新型炭材料,2013(01):47-54. |
| [4] | 王环颖,李文军,常志东,郭会超.非共价修饰碳纳米管/二氧化钛复合材料的合成及性能[J].无机化学学报,2011(02):269-275. |
| [5] | Meijuan Chen;W. Chu .Degradation of antibiotic norfloxacin in aqueous solution by visible-light-mediated C-TiO_2 photocatalysis[J].Journal of hazardous materials,2012(Jun.15):183-189. |
| [6] | Sara Goldstein;David Behar;Joseph Rabani .Nature of the Oxidizing Species Formed upon UV Photolysis of C-TiO2 Aqueous Suspensions[J].The journal of physical chemistry, C. Nanomaterials and interfaces,2009(28):12489-12494. |
| [7] | 吴玉程,刘晓璐,叶敏,解挺,黄新民.碳纳米管负载纳米TiO2复合材料的制备及其性能[J].物理化学学报,2008(01):97-102. |
| [8] | Li, H.;Wang, D.;Fan, H.;Wang, P.;Jiang, T.;Xie, T. .Synthesis of highly efficient C-doped TiO_2 photocatalyst and its photo-generated charge-transfer properties[J].Journal of Colloid and Interface Science,2011(1):175-180. |
| [9] | 朱雷,孟则达,CHO Kwang-youn,吴沅春.CdS/CNT-TiO2光催化剂的合成及其对亚甲基蓝的光催化降解[J].新型炭材料,2012(03):166-174. |
| [10] | Xiaoping Wang;Teik-Thye Lim .Effect of hexamethylenetetramine on the visible-light photocatalytic activity of C-N codoped TiO2 for bisphenol A degradation: evaluation of photocatalytic mechanism and solution toxicity[J].Applied Catalysis, A. General: An International Journal Devoted to Catalytic Science and Its Applications,2011(1/2):233-241. |
| [11] | 张峰君,陈明亮,吴沅春.Ag-CNT/TiO2复合电极对亚甲基蓝的光电催化降解作用[J].新型炭材料,2010(05):348-356. |
| [12] | M.Scarisoreanu;R. Alexandrescu;I.Morjan;R. Birjega;C.Luculescu;E. Popovici;E.Dutu;E. Vasile;V. Danciu;N. Herlin-Boime .Structural evolution and optical properties of C-coated TiO_2 nanoparticles prepared by laser pyrolysis[J].Applied Surface Science: A Journal Devoted to the Properties of Interfaces in Relation to the Synthesis and Behaviour of Materials,2013(Aug.1):295-300. |
| [13] | Ming, H.;Huang, H.;Pan, K.;Li, H.;Liu, Y.;Kang, Z..C/TiO _2 nanohybrids co-doped by N and their enhanced photocatalytic ability[J].Journal of Solid State Chemistry,2012:305-311. |
| [14] | Bin Gao;George Z. Chen;Gianluca Li Puma .Carbon nanotubes/titanium dioxide (CNTs/TiO2) nanocomposites prepared by conventional and novel surfactant wrapping sol-gel methods exhibiting enhanced photocatalytic activity[J].Applied Catalysis, B. Environmental: An International Journal Devoted to Catalytic Science and Its Applications,2009(3/4):503-509. |
| [15] | Linqin Jiang;Lian Gao .Fabrication and characterization of ZnO-coated multi-walled carbon nanotubes with enhanced photocatalytic[J].Materials Chemistry and Physics,2005,91(2-3):313-316. |
| [16] | Michael Kruk;Mietek Jaroniec .Gas Adsorption Characteriztaion of Ordered Organic-Inorganic Nancomposite Materials[J].Chemistry of Materials,2001(10):3169-3183. |
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%