本文先用直流磁控溅射法分别在ITO导电玻璃基底上沉积TiO2和TiN二种纳米薄膜,再在500℃的马弗炉氧化性气氛下进行退火处理,制得TiO2/ITO和TiO2-xNx/ITO薄膜电极。样品的结构和成分用XRD和XPS进行表征。然后分别采用pH=10的Na2CO3/NaHCO3缓冲溶液和1M KOH水溶液作为电解液,在三电极体系中用线性扫描伏安法（LSV）和电流时间曲线（i-t）法测定二种薄膜电极在光照和暗态下的光电化学性能。研究结果表明：以1M KOH水溶液作为电解液比pH=10的Na2CO3/NaHCO3缓冲溶液作为电解液更有利于样品发挥其光催化活性;同时,TiO2-xNx/ITO薄膜电极比TiO2/ITO具有更好的光电化学性能。
Two kinds of film electrodes,TiO2/ITO and TiO2-xNx/ITO were prepared by depositing TiO2 and TiN on ITO substrates using dc reactive magnetron sputtering and then annealed in an oxidative furnace at 500℃.The crystal structure and chemical composition of the film electrodes were characterized by X-ray diffractometry（XRD） and X-ray photoelectron spectroscopy（XPS）.The photoelectrochemical properties of the electrodes were analyzed by testing their LSV and i-t curves under light and in dark,with the two solutions of Na2CO3/NaHCO3（pH=10） and 1M KOH as electrolytes,respectively,for comparation.It shows that the electrolyte of 1M KOH was better for TiO2 and TiO2-xNx photoelectrochemical properties than Na2CO3/NaHCO3（pH=10）,and TiO2-xNx/ITO has better photoelectrochemical properties than TiO2/ITO.
参考文献
| [1] | Arslan Idil .Heterogeneous photocatalytic treatment of simulated dyehouse effluents using novel TiO_2-photocatalysts[J].Applied Catalysis, B. Environmental: An International Journal Devoted to Catalytic Science and Its Applications,2000(3):193-206. |
| [2] | K. VINODGOPAL;DARREL E. WYNKOOP;PRASHANT V. KAMAT .Environmental Photochemistry on Semiconductor Surfaces: Photosensitized Degradation of a Textile Azo Dye, Acid Orange 7, on TiO_2 Particles Using Visible Light[J].Environmental Science & Technology: ES&T,1996(5):1660-1666. |
| [3] | K. Vinodgopal;S. Hotchandani;P.V. Kamat;Vinodgopal,K,Hotchandani,S.Kamat,P.V .Electrochemically assisted photocatalysis-TiO2 particulate film electrodes for photocatalytic degradation of 4 chlorophenol[J].Journal of Physical Chemistry,1993,97:9040-9044. |
| [4] | Roberto J. Candal;Walter A. Zeltner;Marc A. Anderson .Effects of pH and applied potential on photocurrent and oxidation rate of saline solutions of formic acid in a photoelectrocatalytic reactor[J].Environmental Science & Technology: ES&T,2000(16):3443-3451. |
| [5] | Michael L. Hitchman;Fang Tian .Studies of TiO_2 thin films prepared by chemical vapour deposition for photocatalytic and photoelectrocatalytic degradation of 4-chlorophenol[J].Journal of Electroanalytical Chemistry: An International Journal Devoted to All Aspects of Electrode Kinetics, Interfacial Structure, Properties of Electrolytes, Colloid and Biological Electrochemistry,2002(0):165-172. |
| [6] | Maria Valnice B.Zanoni;Marc A.Anderson;Jeosadaque J.Sene .Photoelectrocatalytic degradation of remazol brilliant orange 3R on titanium dioxide thin-film electrodes[J].Journal of Photochemistry and Photobiology, A. Chemistry,2003(1):55-63. |
| [7] | Taicheng An;Wenbing Zhang;Xianming Xiao;Guoying Sheng;Jiamo Fu;Xihai Zhu .Photoelectrocatalytic degradation of quinoline with a novel three-dimensional electrode-packed bed photocatalytic reactor[J].Journal of Photochemistry and Photobiology, A. Chemistry,2004(2/3):233-242. |
| [8] | Jiaqing Li;Lei Zheng;Luoping Li;Yuezhong Xian;Litong Jin .Fabrication of TiO_2/Ti electrode by laser-assisted anodic oxidation and its application on photoelectrocatalytic degradation of methylene blue[J].Journal of hazardous materials,2007(1):72-78. |
| [9] | Vinodgopal, K;Kamat, P. V .Enhanced rates of photocatalytic degradation of azo-dye using SnO2/TiO2 coupled semiconductor thin-films[J].Environmental Science and Technology,1995,29(03):841-845. |
| [10] | Kormann C;Bahnemann D W;Hoffman M R .Photolysis of chloroform and other Organic Molecules in Aqueous titanium dioxide suspensions[J].Environmental Science and Technology,1991,25:494-500. |
| [11] | Abdullah M;Lew G K C;Matthews R W .Effects of common inorganic anions on rates of photoeatalytie oxidation of organic carbon over illuminated titanium dioxide[J].Journal of Physical Chemistry,1990,94:6820-6825. |
| [12] | Lew G K C;Mcevoy S R;Matthews R W .Formation of nitrate and ammonium ions in titanium dioxide mediated photoeatalytic degradation of organic compounds containing nitrogen atoms[J].Environmental Science and Technology,1991,25:460-467. |
| [13] | Nageh K. Allam;Mostafa A. El-Sayed .Photoelectrochemical Water Oxidation Characteristics of Anodically Fabricated TiO2 Nanotube Arrays: Structural and Optical Properties[J].The journal of physical chemistry, C. Nanomaterials and interfaces,2010(27):12024-12029. |
| [14] | Andrew Lyon L;Joseph T. Hupp .Energetics of the nanocrystalline titanium dioxide/aqueous solution interface: approximate conduction band edge variations between HO = -10 and H- = +26[J].journal of Physical Chemistry B,1999,103:4623-4628. |
| [15] | H. Huang;L. Jiang;W.K. Zhang;Y.P. Gan;X.Y. Tao;H.F. Chen .Photoelectrochromic properties and energy storage of TiO2xNx/NiO bilayer thin films[J].Solar Energy Materials and Solar Cells: An International Journal Devoted to Photovoltaic, Photothermal, and Photochemical Solar Energy Conversion,2010(2):355-359. |
| [16] | Wan L;Li JF;Feng JY;Sun W;Mao ZQ .Improved optical response and photocatalysis for N-doped titanium oxide (TiO2) films prepared by oxidation of TiN[J].Applied Surface Science: A Journal Devoted to the Properties of Interfaces in Relation to the Synthesis and Behaviour of Materials,2007(10):4764-4767. |
| [17] | Diwald, O;Thompson, T. L;Zubkov, T;Goralski,E.G,Walck,S.D,Yates,Jr.J.T .Photochemical activity of nitrogen-doped rutile TiO2 (110) in visible light[J].Journal of Physical Chemistry B,2004,108:6004-6008. |
| [18] | Rodriguez, J. A;Jirsak, T;Hrbek, J;Dvorak,J,Maiti,A .Chemistry of NO2 on oxide surfaces: Formation of NOx on TiO2(110) and NO2 :O vacancy interactions[J].Journal of the American Chemical Society,2001,123:9597-9605. |
| [19] | Blake D M;Webb J;Turehi C et al.Kinetic and meehanistic overview of TiO2-photocatalyzed oxidation reactions in aqueous solution[J].Solar Energy Materials,1991,24:584-593. |
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%