研究了利用电化学阳极氧化法在不同的氧化电压和氧化时间条件下制备的TiO2纳米管(TNT)的结构特征对其光电催化性能的影响.运用场发射扫描电子显微镜,X射线衍射和X射线光电子能谱分析等手段对其进行表征,考察了其光电化学性质,研究了具有不同纳米结构特征的TiO2纳米管降解甲基橙染料废水的反应动力学性能.结果表明,TiO2纳米管的长径比对其光电催化性能影响最大.其管长和管径随着氧化电压和氧化时间的增大而增大,壁厚随着氧化电压的增大而减小.在其管长为25.85μm、壁厚为10.23nm、长径比为178、粗糙系数为175的条件下具有最大光电流密度4.8×10-2mA/cm2,对甲基橙(MO)光电催化降解拟一级反应动力学常数达到最大值2.26×10-3/min.
参考文献
| [1] | Fujishima A;Honda K .Electrochemical photolysis of water at a semiconductor electrode[J].Nature,1972,238(5358):37-38. |
| [2] | Akira Fujishima;Tata N. Rao;Donald A. Tryk .Titanium dioxide photocatalysis[J].Journal of photochemistry and photobiology, C. Photochemistry reviews,2000(1):1-21. |
| [3] | Akira Fujishima;Xintong Zhang .Titanium dioxide photocatalysis:present situation and future approaches[J].Comptes Rendus Chimie,2006(5/6):750-760. |
| [4] | I.M.Arabatzis;T.Stergiopoulos;M.C.Bernard;D.Labou;S.G.Neophytides;P.Falaras .Silver-modified titanium dioxide thin films for efficient photodegradation of methyl orange[J].Applied Catalysis, B. Environmental: An International Journal Devoted to Catalytic Science and Its Applications,2003(2):187-201. |
| [5] | Daoai Wang;Ying Liu;Bo Yu .TiO2 Nanotubes with Tunable Morphology, Diameter, and Length: Synthesis and Photo-Electrical/Catalytic Performance[J].Chemistry of Materials: A Publication of the American Chemistry Society,2009(7):1198-1206. |
| [6] | Mor GK;Shankar K;Paulose M;Varghese OK;Grimes CA .Use of highly-ordered TiO2 nanotube arrays in dye-sensitized solar cells[J].Nano letters,2006(2):215-218. |
| [7] | Zhu K;Neale NR;Miedaner A;Frank AJ .Enhanced charge-collection efficiencies and light scattering in dye-sensitized solar cells using oriented TiO2 nanotubes arrays[J].Nano letters,2007(26):69-74. |
| [8] | Tenne R;Rao C N R .Inorganic nanotubes[J].Philosophical Transactions of the Royal Society of London Series A Mathematical and Physical Sciences,2004,362(1823):2099-2125. |
| [9] | Arthur J. Frank;Nikos Kopidakis;Jao van de Lagemaat .Electrons in nanostructured TiO_2 solar cells: transport, recombination and photovoltaic properties[J].Coordination chemistry reviews,2004(13/14):1165-1179. |
| [10] | HUI-FANG ZHUANG;CHANG-JIAN LIN;YUE-KUN LAI .Some Critical Structure Factors of Titanium Oxide Nanotube Array in Its Photocatalytic Activity[J].Environmental Science & Technology: ES&T,2007(13):4735-4740. |
| [11] | Gong D;Grimes C A;Varghese O K et al.Titanium oxide nanotube arrays prepared by anodic oxidation[J].Journal of Materials Research,2001,16(02):3331-3334. |
| [12] | Karthik Shankar;Gopal K. Mor;Adriana Fitzgerald;Craig A. Grimes .Cation Effect on the Electrochemical Formation of Very High Aspect Ratio TiO2 Nanotube Arrays in Formamide-Water Mixtures[J].The journal of physical chemistry, C. Nanomaterials and interfaces,2007(1):21-26. |
| [13] | Warapong Krengvirat;Srimala Sreekantan;Ahmad-Fauzi Mohd Noor;Nobuaki Negishi;Song Yul Oh;Go Kawamura;Hiroyuki Muto;Atsunori Matsuda .Carbon-incorporated TiO_2 photoelectrodes prepared via rapid-anodic oxidation for efficient visible-light hydrogen generation[J].International journal of hydrogen energy,2012(13):10046-10056. |
| [14] | Sreekantan S;Saharudin K A;Lockman Z et al.Fastrate formation of TiO2 nanotube arrays in an organic bath and their application in photocatalysis[J].Nanotechnology,2010,21(36):365603. |
| [15] | Mohapatra S K;Misra M;Mahajan V K et al.Design of a highly efficient photoelectrolytic cell for hydrogen generation by water splitting:application of TiO2-xCx nanotubes as photoanode and Pt/TiO2 nanotubes as acathode[J].Journal of Physical Chemistry C,2007,111:8677-8685. |
| [16] | Jong Hyeok Park;Sungwook Kim;Allen J.Bard .Novel Carbon-Doped TiO_2 Nanotube Arrays with High Aspect Ratios for Efficient Solar Water Splitting[J].Nano letters,2006(1):24-28. |
| [17] | Wagner C D;Riggs W M;Davis L E.Handbook of X-ray photoelectron spectroscopy[M].USA:Perkin-Elmer Corp,Physical Electronics Division,1979 |
| [18] | HSIN-HUNG OU;CHING-HUI LIAO;YA-HSUAN LIOU .Photocatalytic Oxidation of Aqueous Ammonia over Microwave-Induced Titanate Nanotubes[J].Environmental Science & Technology: ES&T,2008(12):4507-4512. |
| [19] | Yan Sun;Guixin Wang;Kangping Yan .Effect of Annealing Temperature on the Hydrogen Production of TiO2 Nanotube Arrays in a Two-Compartment Photoelectrochemical Cell[J].The journal of physical chemistry, C. Nanomaterials and interfaces,2011(26):12844-12849. |
| [20] | Tayirjan T. Isimjan;Sohrab Rohani;Ajay K. Ray .Photoelectrochemical water splitting for hydrogen generation on highly ordered TiO_2 nanotubes fabricated by using Ti as cathode[J].International journal of hydrogen energy,2012(1):103-108. |
| [21] | Hong Wang;Hongyi Li;Jinshu Wang;Junshu Wu.High aspect-ratio transparent highly ordered titanium dioxide nanotube arrays and their performance in dye sensitized solar cells[J].Materials Letters,2012:99-102. |
| [22] | Yan Sun;Guixin Wang;Kangping Yan .TiO_2 nanotubes for hydrogen generation by photocatalytic water splitting in a two-compartment photoelectrochemical cell[J].International journal of hydrogen energy,2011(24):15502-15508. |
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