Fabrication and Hydrogen Sensing Properties of Interlinked Ribbon-Like TiO2 Films

被引：5

作者：

Ren, Fujian ^{[1
]}

Huang, Liang ^{[1
]}

Ling, Yunhan ^{[1
]}

Shen, Shi ^{[1
]}

Feng, Jiayou ^{[1
]}

机构：

[1] Tsinghua Univ, Dept Mat Sci & Engn, Adv Mat Lab, Beijing 100084, Peoples R China

来源：

JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY | 2010年 / 10卷 / 11期

关键词：

Hydrogen Sensor; TiO2; Chemical-Treatment; METAL;

D O I：

10.1166/jnn.2010.2799

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Interlinked ribbon-like TiO2 films were prepared by micro-arc oxidation (MAO) process and subsequent chemical-treatment of titanium substrate. The chemical-treatment included two steps: firstly, alkali treatment was performed on the surface of the porous TiO2 films, and then the samples were ion-exchanged in acid aqueous solution. The phase and microstructure of the samples were characterized by XRD, FE-SEM and TEM. It is found that ribbon-like sodium titanate is formed by alkali treatment, and its morphology remains unchanged after acid-treatment. However, the phase compositions of the samples surface change into TiO2 (MAOC-TiO2) after heat-treatment above 500 degrees C. The hydrogen sensing properties at low concentrations were investigated. The result shows that such ribbon-like TiO2 films present high sensing properties at a low temperature.

引用

页码：7726 / 7729

页数：4

共 15 条

[1] Anatase TiO2 films based CO gas sensor:: Film thickness, substrate and temperature effects [J].

Al-Homoudi, Ibrahim A. ;

Thakur, J. S. ;

Naik, R. ;

Auner, G. W. ;

Newaz, G. .

APPLIED SURFACE SCIENCE, 2007, 253 (21) :8607-8614

[2]

ALBU SP, 2008, ADV MATER, V20, P1

[3] Template-directed synthesis of oxide nanotubes: Fabrication, characterization, and applications [J].

Bae, Changdeuck ;

Yoo, Hyunjun ;

Kim, Sihyeong ;

Lee, Kyungeun ;

Kim, Jiyoung ;

Sung, Myung A. ;

Shin, Hyunjung .

CHEMISTRY OF MATERIALS, 2008, 20 (03) :756-767

[4] Novel semiconductor materials for the development of chemical sensors and biosensors: A review [J].

Chaniotakis, Nikos ;

Sofikiti, Nikoletta .

ANALYTICA CHIMICA ACTA, 2008, 615 (01) :1-9

[5] Metal and metal oxide nanoparticles in chemiresistors: Does the nanoscale matter? [J].

Franke, ME ;

Koplin, TJ ;

Simon, U .

SMALL, 2006, 2 (01) :36-50

[6] CO sensing performance in micro-arc oxidized TiO2 films for air quality control [J].

Jun, Youn-Ki ;

Kim, Hyun-Su ;

Lee, Jong-Heun ;

Hong, Seong-Hyeon .

SENSORS AND ACTUATORS B-CHEMICAL, 2006, 120 (01) :69-73

[7] The role of morphology and crystallographic structure of metal oxides in response of conductometric-type gas sensors [J].

Korotcenkov, G. .

MATERIALS SCIENCE & ENGINEERING R-REPORTS, 2008, 61 (1-6) :1-39

[8] Preparation of TiO2 nanowire gas nanosensor by AFM anode oxidation [J].

Li, Zhen ;

Wu, Minghong ;

Liu, Tiebing ;

Wu, Chao ;

Jiao, Zheng ;

Zhao, Bing .

ULTRAMICROSCOPY, 2008, 108 (10) :1334-1337

[9] Geometry transformation and alterations of periodically patterned Si nanotemplates by dry oxidation [J].

Park, Jeongwon ;

Chen, Li-Han ;

Hong, Daehoon ;

Choi, Chulmin ;

Loya, Mariana ;

Brammer, Karla ;

Bandaru, Prab ;

Jin, Sungho .

NANOTECHNOLOGY, 2009, 20 (01)

[10] Effects of various metal additives on the gas sensing performances of TiO2 nanocrystals obtained from hydrothermal treatments [J].

Ruiz, AM ;

Cornet, A ;

Shimanoe, K ;

Morante, JR ;

Yamazoe, N .

SENSORS AND ACTUATORS B-CHEMICAL, 2005, 108 (1-2) :34-40

← 1 2 →