Improving Hydrogen Sensing Performance of TiO2 Nanotube Arrays by ZnO Modification

被引：16

作者：

Yu, Aihua ^{[1
]}

Xun, Haitao ^{[1
]}

Yi, Jianxin ^{[1
]}

机构：

[1] Univ Sci & Technol China, Dept Safety Sci & Engn, State Key Lab Fire Sci, Hefei, Anhui, Peoples R China

来源：

FRONTIERS IN MATERIALS | 2019年 / 6卷

基金：

中国国家自然科学基金;

关键词：

hydrogen sensor; semiconductor; TiO2; nanotubes; heterojunction; anodic oxidation; HIGHLY EFFICIENT; GAS;

D O I：

10.3389/fmats.2019.00070

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this work, anodization was utilized to synthesize highly ordered TiO2 nanotube arrays, and ZnO was successfully decorated onto the surface of as-prepared TiO2 nanotubes via a facile impregnation method. The gas sensing performance of a TiO2@ZnO composite was systematically studied. At a working temperature of 300 degrees C, the response of TiO2@ZnO to 100 ppm H-2 was similar to 340, 2.7 times larger than that of pristine TiO2. A power-law relationship between the response and H-2 concentration was observed. In addition, the response time was significantly reduced by four times, and improved selectivity to H-2 was achieved. The highly improved sensing performance of TiO2 nanotubes by ZnO decoration may be attributed to the enhanced oxygen adsorption and formation of n-n heterojunctions.

引用

页数：6

共 28 条

[11] Nanoscale metal oxide-based heterojunctions for gas sensing: A review [J].

Miller, Derek R. ;

Akbar, Sheikh A. ;

Morris, Patricia A. .

SENSORS AND ACTUATORS B-CHEMICAL, 2014, 204 :250-272

[12] A review on highly ordered, vertically oriented TiO2 nanotube arrays:: Fabrication, material properties, and solar energy applications [J].

Mor, Gopal K. ;

Varghese, Oomman K. ;

Paulose, Maggie ;

Shankar, Karthik ;

Grimes, Craig A. .

SOLAR ENERGY MATERIALS AND SOLAR CELLS, 2006, 90 (14) :2011-2075

[13] ZnO Coated Anodic 1D TiO2 Nanotube Layers: Efficient Photo-Electrochemical and Gas Sensing Heterojunction [J].

Ng, Siowwoon ;

Kubersky, Petr ;

Krbal, Milos ;

Prikryl, Jan ;

Gartnerova, Viera ;

Moravcova, Daniela ;

Sopha, Hanna ;

Zazpe, Raul ;

Yam, Fong Kwong ;

Jager, Ales ;

Hromadko, Ludek ;

Benes, Ludvik ;

Hamacek, Ales ;

Macak, Jan M. .

ADVANCED ENGINEERING MATERIALS, 2018, 20 (02)

[14] Unprecedented ultra-high hydrogen gas sensitivity in undoped titania nanotubes [J].

Paulose, M ;

Varghese, OK ;

Mor, GK ;

Grimes, CA ;

Ong, KG .

NANOTECHNOLOGY, 2006, 17 (02) :398-402

[15] TiO2/ZnO core/shell nano-heterostructure arrays as photo-electrodes with enhanced visible light photoelectrochemical performance [J].

Sarkar, Ayan ;

Singh, Ashutosh K. ;

Khan, Gobinda Gopal ;

Sarkar, Debasish ;

Mandal, Kalyan .

RSC ADVANCES, 2014, 4 (98) :55629-55634

[16] Synthesis of highly-ordered TiO2 nanotubes for a hydrogen sensor [J].

Sennik, Erdem ;

Colak, Zeliha ;

Kilinc, Necmettin ;

Ozturk, Zafer Ziya .

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2010, 35 (09) :4420-4427

[17] A Review of Palladium-Based Fiber-Optic Sensors for Molecular Hydrogen Detection [J].

Silva, Susana F. ;

Coelho, Luis ;

Frazao, Orlando ;

Santos, Jose L. ;

Xavier Malcata, F. .

IEEE SENSORS JOURNAL, 2012, 12 (01) :93-102

[18] Hydrogen sensing using titania nanotubes [J].

Varghese, OK ;

Gong, DW ;

Paulose, M ;

Ong, KG ;

Grimes, CA .

SENSORS AND ACTUATORS B-CHEMICAL, 2003, 93 (1-3) :338-344

[19] TiO2-Based Nanoheterostructures for Promoting Gas Sensitivity Performance: Designs, Developments, and Prospects [J].

Wang, Yuan ;

Wu, Tao ;

Zhou, Yun ;

Meng, Chuanmin ;

Zhu, Wenjun ;

Liu, Lixin .

SENSORS, 2017, 17 (09)

[20] Contrasting room-temperature hydrogen sensing capabilities of Pt-SnO2 and Pt-TiO2 composite nanoceramics [J].

Xiong, Yao ;

Chen, Wanping ;

Li, Yesheng ;

Cui, Ping ;

Guo, Shishang ;

Chen, Wei ;

Tang, Zilong ;

Yan, Zijie ;

Zhang, Zhenyu .

NANO RESEARCH, 2016, 9 (11) :3528-3535

← 1 2 3 →