Next Article in Journal
Novel RF Interrogation of a Fiber Bragg Grating Sensor Using Bidirectional Modulation of a Mach-Zehnder Electro-Optical Modulator
Next Article in Special Issue
Self-Assembled 3D ZnO Porous Structures with Exposed Reactive {0001} Facets and Their Enhanced Gas Sensitivity
Previous Article in Journal
Development of a Wireless Displacement Measurement System Using Acceleration Responses
Previous Article in Special Issue
TREFEX: Trend Estimation and Change Detection in the Response of MOX Gas Sensors
Article Menu

Export Article

Open AccessArticle
Sensors 2013, 13(7), 8393-8402;

Hydrogen Sensing with Ni-Doped TiO2 Nanotubes

Institute of Microelectronic Materials and Technology, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
Author to whom correspondence should be addressed.
Received: 2 May 2013 / Revised: 19 June 2013 / Accepted: 24 June 2013 / Published: 1 July 2013
(This article belongs to the Special Issue Gas Sensors - 2013)
Full-Text   |   PDF [611 KB, uploaded 21 June 2014]


Doping with other elements is one of the efficient ways to modify the physical and chemical properties of TiO2 nanomaterials. In the present work, Ni-doped TiO2 nanotubes were fabricated through anodic oxidation of NiTi alloy and further annealing treatment. The hydrogen sensing properties of the nanotube sensor were investigated. It was found that the Ni-doped TiO2 nanotubes were sensitive to an atmosphere of 1,000 ppm hydrogen, showing a good response at both room temperature and elevated temperatures. A First-Principle simulation revealed that, in comparison with pure anatase TiO2 oxide, Ni doping in the TiO2 oxide could result in a decreased bandgap. When the oxide sensor adsorbed a certain amount of hydrogen the bandgap increased and the acceptor impurity levels was generated, which resulted in a change of the sensor resistance. View Full-Text
Keywords: TiO2; nanotubes; doping; hydrogen sensor TiO2; nanotubes; doping; hydrogen sensor
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

Share & Cite This Article

MDPI and ACS Style

Li, Z.; Ding, D.; Liu, Q.; Ning, C. Hydrogen Sensing with Ni-Doped TiO2 Nanotubes. Sensors 2013, 13, 8393-8402.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Sensors EISSN 1424-8220 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top