Paper Title:
Effect of Pore Structures on the Humidity Sensitivity of TiO2-Based Ceramic Humidity Sensors
  Abstract

TiO2-based ceramic humidity sensors containing small amounts of Li2O and V2O5 were prepared by a solid-reaction method. The relationship between the pore structures of the sensors and one of the most important humidity properties, hysteresis in humidity sensitivity, was studied. The humidity sensitivity was investigated by measuring the impedance of the sensors under various conditions of humidity, and the pore-size distribution was measured by mercury-intrusion porosimetry and by the nitrogen-adsorption method. The hysteresis property of the sensors was shown to be significantly dependent on their microstructure, particularly the volume ratio of mesopores to all pores in the sensor elements. Nitrogen adsorption was found to be more useful than mercury porosimetry for determining the proportion of mesopores in the samples.

  Info
Periodical
Edited by
Kazumi Kato, Tadashi Takenaka, Masasuke Takata and Kazuo Shinozaki
Pages
285-288
DOI
10.4028/www.scientific.net/KEM.388.285
Citation
H. Aoki, T. Asaka, M. Higuchi, Y. Azuma, K. Asaga, K. Katayama, "Effect of Pore Structures on the Humidity Sensitivity of TiO2-Based Ceramic Humidity Sensors", Key Engineering Materials, Vol. 388, pp. 285-288, 2009
Online since
September 2008
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Nik Hisyamudin Muhd Nor, Yokoyama Seiji, Tatsuya Suzuki, Motozuka Satoshi, Shimomura Tetsuya, Sasano Junji, Izaki Masanobu
Abstract:A fundamental study on the reaction between CO2 and mechanically activated metal powders has been conducted. In this research, the behavior...
799
Authors: Ping Tang, Xiong Yang, Ying Shu Liu
Abstract:Five types of active carbon’s adsorption isotherm of nitrogen at 77K were measured, and their adsorption characteristic were analysed. The...
586
Authors: Xi Li, Jian Zhu, Fu Jian Lv, Jin Guo Wang, Zong Li Xie, Manh Hoang, He Xing Li
Chapter 7: Pollution Control Project (Air, Water, Solid)
Abstract:Two kinds of SnS2 materials were prepared through the hydrothermal route, respectively using thioacetamide (TAA) and thiourea as...
1708
Authors: Qi Xia Liu, Tao Ji, Li Fen He, Qiang Gao
Chapter 2: Materials Science and Engineering
Abstract:Various jute-based activated carbon fibers were prepared by using jute fibers as raw materials, phosphoric acid as activating agent and...
1428
Authors: Xiong Yang, Ying Shu Liu, Yong Ling Li
Chapter2: Research on Material Engineering and Material Applications
Abstract:Nine types of active carbon materials’ adsorption isotherm of nitrogen at 77K were measured, and their surface texture parameters were...
177