采用阳极氧化法在乙二醇体系电解液中制备TiO2纳米管阵列，获得了长度为15~20μm的底端纳米管与顶端纳米线的新型复合结构。讨论了电解液中不同含水量对该复合结构形成的影响，并采用两步阳极氧化法对该结构的形成机理进行了分析。结果表明，当乙二醇体系电解液含有0.4%(质量分数)NH4 F和2%(体积分数)H2 O 时，电解液腐蚀速度适中，纳米管上端部分被选择性腐蚀，最终形成纳米管与纳米线的复合结构。
TiO2 nanotube arrays were fabricated by anodization in the system of glycol electrolyte.The new composite structure of the bottom nanotube and upper nanowire with the length of 15-20μm were prepared.The influences of the water contents in the electrolyte with respect to the composite structure was studied by two-step anodization.The results show that the composite structure can be obtained according to moderate etching rate of electrolyte and selective etching of the nanotube,when the glycol system electrolyte containing 0.4wt%NH4 F and 2vol% H2 O.
参考文献
| [1] | Varghese O K;Gong D et al.Extreme charges in the electrical resistance of titania nanotubes with hydrogen exposure[J].Advanced Material,2003,15(7-8):624-627. |
| [2] | Mor GK;Shankar K;Paulose M;Varghese OK;Grimes CA .Enhanced photocleavage of water using titania nanotube arrays[J].Nano letters,2005(1):191-195. |
| [3] | Ye, M.;Gong, J.;Lai, Y.;Lin, C.;Lin, Z. .High-efficiency photoelectrocatalytic hydrogen generation enabled by palladium quantum dots-sensitized TiO _2 nanotube arrays[J].Journal of the American Chemical Society,2012(38):15720-15723. |
| [4] | Paulose M;Mor G K et al.Visible lighttphotoelectro-chemical and water-photoelectro chemical and waterpho-toelectrolysis properties of Photo-chemistry and Photobi-ology[J].Chemistry:a European Journal,2006,178(01):8-15. |
| [5] | 罗胜联;杨丽霞.功能氧化二氧化钛纳米管阵列材料与环境应用[M].北京:科学出版社,2011:18-23. |
| [6] | Gong D;Grimes C;Varghese O et al.Titanium oxide nanotube arrays prepared by anodic oxidation[J].Journal of Materials Research,2001,16(12):3331-3334. |
| [7] | 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. |
| [8] | Taveira LV;Macak JM;Tsuchiya H;Dick LFP;Schmuki P .Initiation and growth of self-organized TiO2 nanotubes anodically formed in NH4F/(NH4)(2)SO4 electrolytes[J].Journal of the Electrochemical Society,2005(10):B405-B410. |
| [9] | Paulose M;Prakasam H E;Varghese O K et al.TiO2 nanotube arrays of 1000μm length by anodization of tita-nium foil[J].Journal of Physical Chemistry C,2007,111(41):14992-14997. |
| [10] | Wu, Zhongbiao;Guo, Sen;Wang, Haiqiang;Liu, Yue .Synthesis of immobilized TiO2 nanowires by anodic oxidation and their gas phase photocatalytic properties[J].Electrochemistry communications,2009(8):1692-1695. |
| [11] | Ahmed El Ruby Mohamed;Sohrab Rohani .Modified TiO_2 nanotube arrays (TNTAs): progressive strategies towards visible light responsive photoanode, a review[J].Energy & environmental science: EES,2011(4):1065-1086. |
| [12] | Jan M. Macak;Sergiu P. Albu;Patrik Schmuki .Towards ideal hexagonal self-ordering of TiO2 nanotubes[J].physica status solidi(RRL): rapid research letterse,2007(5):181-183. |
| [13] | 陈婧非 .TiO2 纳米管的性能改进及其在染料敏化太阳电池中的应用研究[D].上海:上海交通大学,2011. |
| [14] | 陶海军 .TiO<,2>纳米管阵列的阳极氧化制备及性能研究[D].南京航空航天大学,2007. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%