采用水热合成方法制备出外径约8nm,壁厚为1nm的纳米管,以TEM、XRD和TG等分析手段对不同工艺条件下获得的产物进行了表征,对它们的热稳定性进行了测试.研究结果表明,纳米管是在NaOH水热处理过程中形成的,而不是在清洗过程中形成的.其形成机理可能是纳米氧化钛颗粒在强碱作用下形成的Na2Ti3O7片状物经过卷曲而成短纳米管,通过溶解-吸收机理,逐渐长成长纳米管.但清洗溶液的pH值对生成的纳米管的成分和结构有影响,通过控制清洗产物时的溶液的pH值和热处理温度,可以获得组成分别以Na2Ti3O7、H2Ti3O7和TiO2为主晶向的纳米管,且纳米管具有较好的热稳定性.
参考文献
| [1] | 高濂;郑珊;张青红.纳米氧化钛光催化材料及应用[M].北京:化学工业出版社,2002:23-285. |
| [2] | Fujishima A;Hashimoto K;Watanabe T.TiO2 photocatalysis[M].fundamentals and applications, BKC, Inc Tokyo,1999 |
| [3] | Abdelkrim Chemseddine;Thomas Moritz .Nanostructuring Titania: Control over Nanocrystal Structure, Size, Shape, and Organization[J].European journal of inorganic chemistry,1999(2):235-245. |
| [4] | Pujishima K H .Electrochemical Photolysis of Water at a Semiconductor Electrode[J].Nature,1972,238(5358):37-38. |
| [5] | Moon S;Mametsuka H;Tabata S et al.Photocatalytic Production of Hydrogen from Water Using TiO2 and B/TiO2[J].Catalysis Today,2000,58(2-3):125-132. |
| [6] | 吴海宝;董晓耒 .太阳能-TiO2非均相光催化氧化染料污水脱色研究[J].中国环境科学,1997,17(01):93-96. |
| [7] | 张顺利,周静芳,张治军,杜祖亮,A. V. Vorontsov,金振声.纳米管TiO2的形貌结构和物理化学特性[J].科学通报,2000(10):1104-1107. |
| [8] | 李伟,王晓冬,杨建军,张顺利,金振声,张治军.高比表面积TiO2纳米管的制备与表征[J].化学研究,2002(03):12-14. |
| [9] | Chen YF.;Lee CY.;Yeng MY.;Chiu HT. .Preparing titanium oxide with various morphologies[J].Materials Chemistry and Physics,2003(1):39-44. |
| [10] | 李晓红,张校刚,力虎林.Tio2纳米管的模板法制备及表征[J].高等学校化学学报,2001(01):130-132. |
| [11] | 张青红,高濂,郑珊,孙静.制备均一形貌的长二氧化钛纳米管[J].化学学报,2002(08):1439-1444. |
| [12] | Oomman K. Varghese;Dawei Gong;Maggie Paulose;Keat G. Ong;Craig A. Grimes .Hydrogen sensing using titania nanotubes[J].Sensors and Actuators, B. Chemical,2003(1/3):338-344. |
| [13] | Kasuga T.;Hoson A.;Sekino T.;Niihara K.;Hiramatsu M. .Formation of titanium oxide nanotube[J].Langmuir: The ACS Journal of Surfaces and Colloids,1998(12):3160-3163. |
| [14] | Kasuga T.;Hoson A.;Sekino T.;Niihara K.;Hiramatsu M. .Titania nanotubes prepared by chemical processing[J].Advanced Materials,1999(15):1307-1311. |
| [15] | Sun X M;Li Y D .Synthesis and characterization of ion-exchangeable titanate nanotube[J].Chemical Journal,2003,9(10):2229-2238. |
| [16] | G. H. Du;Q. Chen;R. C. Che;Z. Y. Yuan;L.-M. Peng .Preparation and structure analysis of titanium oxide nanotubes[J].Applied physics letters,2001(22):3702-3704. |
| [17] | B. D. Yao;Y. F. Chan;X. Y. Zhang;W. F. Zhang;Z. Y. Yang;N. Wang .Formation mechanism of TiO_(2) nanotubes[J].Applied physics letters,2003(2):281-283. |
| [18] | Chen Q;Du G H;PENG L M et al.Nanotube made from layered H2Ti3O7 trititanate[J].电子显微学报,2002,21(03):265-268. |
| [19] | Lin C H;Chien S H;Chao J H et al.The synthesis of sulphated titanium oxide nanotube[J].Catalysis Letters,2002,80(3-4):153-159. |
| [20] | Qing Chen;Wuzong Zhou;Gaohui Du;Lianmao Peng .Trititanate Nanotubes Made via a Single Alkali Treatment[J].Advanced Materials,2002(17):1208-1211. |
| [21] | Ma RZ.;Bando Y.;Sasaki T. .Nanotubes of lepidocrocite titanates[J].Chemical Physics Letters,2003(5-6):577-582. |
| [22] | Andersson S;Wadsley A D .The structure of Na2Ti6O13 and Rb2Ti6O13 and the alkali metal titanates[J].Acta Crystallographica,1962,15(03):194-201. |
| [23] | Kong X;Ding Y;Yang R et al.Single-crystal nanorings formed by epitaxial self-coiling of polar nanobelts[J].Science,2004,303(5662):1348-1351. |
| [24] | Bunker B;Peden C;Tallant D et al.Raman and NMR studies of hydrous sodium titanates[J].Materials Research Society Symposium Proceedings,1990,24(121):105-109. |
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%