Please wait a minute...
Acta Physico-Chimica Sinica  2010, Vol. 26 Issue (03): 663-668    DOI: 10.3866/PKU.WHXB20100317
CATALYSIS AND SURFACE STRUCTURE     
Doping Mechanism of N-TiO2/ZnO Composite Nanotube Arrays and Their Photocatalytic Activity
ZHAI Xiao-Hui, LONG Hui-Jin, DONG Jiang-Zhou, CAO Ya-An
College of Physics, Nankai University, Tianjin 300071, P. R. China; Teda Applied Physics School, Nankai University, Tianjin 300457, P. R. China
Download:   PDF(785KB) Export: BibTeX | EndNote (RIS)      

Abstract  

TiO2/ZnO and N-doped TiO2/ZnO composite nanotube arrays were synthesized by the sol-gel method using ZnOnanorod arrays as a template. Scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and diffuse reflectance UV-Vis spectroscopy (UV-Vis) were used to characterize the samples. The nanotubes had a uniform hexagonal shape. The diameter and wall thickness of the nanotubes were about 100 nm and 20 nm, respectively. Some N dopants were substitutionally doped into the TiO2 lattice, while the N-Ox, N-C, and N-N were chemically absorbed onto the surface of the TiO2/ZnO composite nanotubes. Dopant-induced narrowing of the bandgap resulted from the doping of N ions into the TiO2 lattices. The surface N species enhanced the visible-light response and promoted the separation of photogenerated carriers. Compared with the TiO2/ZnO composite nanotube arrays, the N-TiO2/ZnO composite nanotube arrays exhibited higher photocatalytic activity.



Key wordsPhotocatalysis      TiO2/ZnO composite nanotube array      N doping      Doping mechanism     
Received: 19 August 2009      Published: 26 January 2010
MSC2000:  O648  
  O643  
Corresponding Authors: CAO Ya-An     E-mail: caoyaan@yahoo.com
Cite this article:

ZHAI Xiao-Hui, LONG Hui-Jin, DONG Jiang-Zhou, CAO Ya-An. Doping Mechanism of N-TiO2/ZnO Composite Nanotube Arrays and Their Photocatalytic Activity. Acta Physico-Chimica Sinica, 2010, 26(03): 663-668.

URL:

http://www.whxb.pku.edu.cn/Jwk_wk/wlhx/10.3866/PKU.WHXB20100317     OR     http://www.whxb.pku.edu.cn/Jwk_wk/wlhx/Y2010/V26/I03/663

[1] YAN Hui-Jun, LI Biao, JIANG Ning, XIA Ding-Guo. First-Principles Study:the Structural Stability and Sulfur Anion Redox of Li1-xNiO2-ySy[J]. Acta Physico-Chimica Sinica, 2017, 33(9): 1781-1788.
[2] CHENG Ruo-Lin, JIN Xi-Xiong, FAN Xiang-Qian, WANG Min, TIAN Jian-Jian, ZHANG Ling-Xia, SHI Jian-Lin. Incorporation of N-Doped Reduced Graphene Oxide into Pyridine-Copolymerized g-C3N4 for Greatly Enhanced H2 Photocatalytic Evolution[J]. Acta Physico-Chimica Sinica, 2017, 33(7): 1436-1445.
[3] HU Hai-Long, WANG Sheng, HOU Mei-Shun, LIU Fu-Sheng, WANG Tian-Zhen, LI Tian-Long, DONG Qian-Qian, ZHANG Xin. Preparation of p-CoFe2O4/n-CdS by Hydrothermal Method and Its Photocatalytic Hydrogen Production Activity[J]. Acta Physico-Chimica Sinica, 2017, 33(3): 590-601.
[4] XIAO Ming, HUANG Zai-Yin, TANG Huan-Feng, LU Sang-Ting, LIU Chao. Facet Effect on Surface Thermodynamic Properties and In-situ Photocatalytic Thermokinetics of Ag3PO4[J]. Acta Physico-Chimica Sinica, 2017, 33(2): 399-406.
[5] ZHANG Hao, LI Xin-Gang, CAI Jin-Meng, WANG Ya-Ting, WU Mo-Qing, DING Tong, MENG Ming, TIAN Ye. Effect of the Amount of Hydrofluoric Acid on the Structural Evolution and Photocatalytic Performance of Titanium Based Semiconductors[J]. Acta Physico-Chimica Sinica, 2017, 33(10): 2072-2081.
[6] CHEN Yang, YANG Xiao-Yan, ZHANG Peng, LIU Dao-Sheng, GUI Jian-Zhou, PENG Hai-Long, LIU Dan. Noble Metal-Supported on Rod-Like ZnO Photocatalysts with Enhanced Photocatalytic Performance[J]. Acta Physico-Chimica Sinica, 2017, 33(10): 2082-2091.
[7] QIU Wei-Tao, HUANG Yong-Chao, WANG Zi-Long, XIAO Shuang, JI Hong-Bing, TONG Ye-Xiang. Effective Strategies towards High-Performance Photoanodes for Photoelectrochemical Water Splitting[J]. Acta Physico-Chimica Sinica, 2017, 33(1): 80-102.
[8] LU Yang. Recent Progress in Crystal Facet Effect of TiO2 Photocatalysts[J]. Acta Physico-Chimica Sinica, 2016, 32(9): 2185-2196.
[9] ZHAO Fei, SHI Lin-Qi, CUI Jia-Bao, LIN Yan-Hong. Photogenerated Charge-Transfer Properties of Au-Loaded ZnO Hollow Sphere Composite Materials with Enhanced Photocatalytic Activity[J]. Acta Physico-Chimica Sinica, 2016, 32(8): 2069-2076.
[10] MENG Ying-Shuang, AN Yi, GUO Qian, GE Ming. Synthesis and Photocatalytic Performance of a Magnetic AgBr/Ag3PO4/ZnFe2O4 Composite Catalyst[J]. Acta Physico-Chimica Sinica, 2016, 32(8): 2077-2083.
[11] LUO Bang-De, XIONG Xian-Qiang, XU Yi-Ming. Improved Photocatalytic Activity for Phenol Degradation of Rutile TiO2 on the Addition of CuWO4 and Possible Mechanism[J]. Acta Physico-Chimica Sinica, 2016, 32(7): 1758-1764.
[12] ZHU Kai-Jian, YAO Wen-Qing, ZHU Yong-Fa. Preparation of Bismuth Phosphate Photocatalyst with High Dispersion by Refluxing Method[J]. Acta Physico-Chimica Sinica, 2016, 32(6): 1519-1526.
[13] WANG Yan-Juan, SUN Jia-Yao, FENG Rui-Jiang, ZHANG Jian. Preparation of Ternary Metal Sulfide/g-C3N4 Heterojunction Catalysts and Their Photocatalytic Activity under Visible Light[J]. Acta Physico-Chimica Sinica, 2016, 32(3): 728-736.
[14] HU Li-Fang, HE Jie, LIU Yuan, ZHAO Yun-Lei, CHEN Kai. Structural Features and Photocatalytic Performance of TiO2-HNbMoO6 Composite[J]. Acta Physico-Chimica Sinica, 2016, 32(3): 737-744.
[15] ZHUANG Jian-Dong, TIAN Qin-Fen, LIU Ping. Bi2Sn2O7 Visible-Light Photocatalysts: Different Hydrothermal Preparation Methods and Their Photocatalytic Performance for As(Ⅲ) Removal[J]. Acta Physico-Chimica Sinica, 2016, 32(2): 551-557.