采用水热法,以锐钛矿相TiO2为原料,10 mol/L NaOH溶液作为矿化剂,合成了钛酸钠纤维.用XRD和TEM对产物进行了表征,观察到纤维长度超过10 μm,宽度为10～100 nm.酸洗后对其进行二次蒸汽处理,得到了具有自组织趋势的锐钛矿相纳米TiO2晶体纤维.以1 kW紫外灯为光源,分析了合成的锐钛矿相TiO2纳米晶体的光催化降解亚甲基蓝性能及其长期稳定性.结果表明:合成的锐钛矿相TiO2纳米晶体对亚甲基蓝的光降解活性很高,纳米晶体易回收,且循环使用光催化活性没有发生衰减.
参考文献
| [1] | Qamar M;Yoon C R;Oh H J et al.Prcparation and Photocatalytic Activity of Nanotubes Obtained from Titanium Dioxide[J].Catalysis Today,2008,131:338-344. |
| [2] | Cho CH;Han MH;Kim DH;Kim DK .Morphology evolution of anatase TiO2 nanocrystals under a hydrothermal condition (pH=9.5) and their ultra-high photo-catalytic activity[J].Materials Chemistry and Physics,2005(1):104-111. |
| [3] | 王竹梅,李月明,夏光华,江向平,左建林.TiO_2纳米管阵列的制备及其光催化性能研究[J].人工晶体学报,2009(06):1410-1415. |
| [4] | Qingxiang Zhou;Yujie Ding;Junping Xiao;Guoguang Liu;Xiaoyang Guo .Investigation of the feasibility of TiO2 nanotubes for the enrichment of DDT and its metabolites at trace levels in environmental water samples[J].Journal of chromatography, A: Including electrophoresis and other separation methods,2007(1):10-16. |
| [5] | Jinwei Xu;Caihong Jia;Bin Cao;W. F. Zhang .Electrochemical properties of anatase TiO{sub}2 nanotubes as an anode material for lithium-ion batteries[J].Electrochimica Acta,2007(28):8044-8047. |
| [6] | Fang H T;Liu M;Wang D W et al.Comparison of The Rate Capability of Nanostructured Amorphous and Anatase TiO2 for Lithium Insertion Using Anodic TiO2 Nanotube Arrays[J].Nanotechnology,2009,225701:1-7. |
| [7] | Yang W G;Farong Wan;Yali Wang et al.Achievement of 6.03 ％ Conversion Efficiency of Dye-Sensitized Solar Cells with Single-Crystalline Rutile TiO2 Nanorod Photoanode[J].Applied Physics Letters,2009,95:133121. |
| [8] | Yasuo Chiba;Ashraful Islam;Ryoichi Komiya;Naoki Koide;Liyuan Han .Conversion efficiency of 10.8% by a dye-sensitized solar cell using a TiO_2 electrode with high haze[J].Applied physics letters,2006(22):223505.1-223505.3. |
| [9] | Jiu T T;Isoda S J;Wang F M et al.Dye-Sensitized Solar Cells Based on a Single-Crystalline TiO2 Nanorod Film[J].Journal of Physical Chemistry,2000,110:2087-2092. |
| [10] | Hua Gui Yang;Cheng Hua Sun;Shi Zhang Qiao;Jin Zou;Gang Liu;Sean Campbell Smith;Hui Ming Cheng;Gao Qing Lu .Anatase TiO2 single crystals with a large percentage of reactive facets[J].Nature,2008(7195):638-641. |
| [11] | Liu G;Yang H G;Wang X W et al.Enhanced Photoactivity of Oxygen-Deficient Anatsse TiO2 Sheets with Dominant { 001 } Facets[J].Journal of Physical Chemistry,2009,113(52):21784-21788. |
| [12] | Liu, M;Piao, LY;Zhao, L;Ju, ST;Yan, ZJ;He, T;Zhou, CL;Wang, WJ .Anatase TiO2 single crystals with exposed {001} and {110} facets: facile synthesis and enhanced photocatalysis[J].Chemical communications,2010(10):1664-1666. |
| [13] | Han, XG;Kuang, Q;Jin, MS;Xie, ZX;Zheng, LS .Synthesis of Titania Nanosheets with a High Percentage of Exposed (001) Facets and Related Photocatalytic Properties[J].Journal of the American Chemical Society,2009(9):3152-3153. |
| [14] | Swapan K.Pradhan;Yuanbing Mao;Stanislaus S.Wong .Atomic-Scale Structure of Nanosized Titania and Titanate:Particles,Wires,and Tubes[J].Chemistry of Materials: A Publication of the American Chemistry Society,2007(25):6180-6186. |
| [15] | Jim-Nan Nian;Hsisheng Teng .Hydrothermal Synthesis of Single-Crystalline Anatase TiO_2 Nanorods with Nanotubes as the Precursor[J].The journal of physical chemistry, B. Condensed matter, materials, surfaces, interfaces & biophysical,2006(9):4193-4198. |
| [16] | 付三玲,ZHANG Fu,韦志仁.锐钛矿相TiO2纳米棒状晶体的水热合成[J].人工晶体学报,2008(04):1012-1015. |
| [17] | 韦志仁,刘新辉,武明晓,彭翔宇,李志强.水热合成长叶片状锐钛矿相TiO2纳米晶[J].人工晶体学报,2010(03):691-695. |
| [18] | 韦志仁,张利明,罗小平,董国义.水热处理钛酸钠制备锐钛相TiO2纤维[J].人工晶体学报,2008(06):1529-1533. |
| [19] | Mao Y B;Kanungo M;Hemraj-Benny T et al.Synthesis and Growth Mechanism of Titanate and Titania One-Dimensional Nanestructures SelfAssembled into Hollow Micrometer-Scale Spherical Aggregates[J].Journal of Physical Chemistry,2006,110(02):702-710. |
| [20] | Huaiyong Zhu;Xueping Gao;Ying Lan;Deying Song;Yingxin Xi;Jincai Zhao .Hydrogen Titanate Nanofibers Covered with Anatase Nanocrystals:A Delicate Structure Achieved by the Wet Chemistry Reaction of the Titanate Nanofibers[J].Journal of the American Chemical Society,2004(27):8380-8381. |
| [21] | Nian J N;Teng H S .Hydrothermal Synthesis of Single-Crystalline Anatase TiO2 Nanorods with Nanotubes as the Precursor[J].Journal of Physical Chemistry B,2006,110:4193-4198. |
| [22] | Andrea Testino;Ignazio Renato Bellobono;Vincenzo Buscaglia;Carmen Canevali;Massimiliano D'Arienzo;Stefano Polizzi;Roberto Scotti;Franca Morazzoni .Optimizing the Photocatalytic Properties of Hydrothermal TiO_2 by the Control of Phase Composition and Particle Morphology. A Systematic Approach[J].Journal of the American Chemical Society,2007(12):3564-3575. |
| [23] | Yuxiang Yu;Dongsheng Xu .Single-crystalline TiO2 nanorods:Highly active and easily recycled photocatalysts[J].Applied Catalysis, B. Environmental: An International Journal Devoted to Catalytic Science and Its Applications,2007(1/2):166-171. |
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%