摘要
以TiC l3为钛源,采用溶胶-凝胶法制备Mo6+掺杂TiO2基纳米粉体,表明在400℃下低温烧结,即可得到金红石相为主晶相的TiO2基敏感材料。在低温工作条件(145℃)及1×10-4O2下,Mo6+掺杂TiO2厚膜型气敏元件的氧敏特性比纯TiO2的好,并结合Zeta电位特性测量,其氧敏特性的增强在于表面电荷密度的提高。
TiO2 based nanosized powders doped with Mo^6+ were prepared by sol - gel technique using TiCl3. It indicates that rutile TiO2 can be obtained at low annealing temperature (400℃). Oxygen sensi- tivity of thick - film sensors were also researched at low operating temperature ( 145℃ ) and 1 × 10^-4oxygen concentration. The sensitivity of TiO2 doped with Mo^6+ is better than that of pure TiO2 due to the charge density on surface, which is detected by Zeta potential.
出处
《功能材料与器件学报》
EI
CAS
CSCD
北大核心
2005年第4期489-491,共3页
Journal of Functional Materials and Devices
基金
国家自然科学基金(No.50472001)
福建省教育厅科研项目(No.JB03008)