STUDY ON DESIGN AND PROPERTIES OF PAPER-BASED NANO-SIZED TiO2 GAS SENSOR
The production cost, sensitivity and selectivity are regarded as the most important factors of restricting TiO2 gas sensor development. Nanometer-sized TiO2 can miniaturize the sensor and increase sensitivity greatly because of its much larger specific surface area. Production cost, as well as the environmental pollution can be decreased by using paper as the substance of gas sensor. Moreover, printing technology could be used in its industrialized production. In this paper, a method of making a new kind of paper-based nanometer-sized TiO2 gas sensor was introduced. A kind of gas-sensing material made of quantitative filter paper, with surface smeared by nanometer-sized TiO2 colloid, was prepared. The nanometer-sized TiO2 colloid was prepared by low temperature liquid phase process, and the sensor’s reaction temperature was controlled by heating resistor. Some gas-sensitive tests were carried out by WS-30A, a sensitivity-testing system. The morphologies and structures of the films were characterized by SEM and AFM, and the sensitivity of samples under different experimental conditions and preparation method was also tested with the system.
paper-based nano-sized TiO2 gas sensor
Liu Tianlong Shen Wenhao Chen Xiaoquan
State Key Laboratory of Pulp and Paper Engineering,South China University of Technology, Guangzhou,510640, China
国际会议
广州
英文
1869-1872
2010-11-08（万方平台首次上网日期，不代表论文的发表时间）