Mo^(6+)掺杂TiO_2纳米材料的表面性能及氧敏特性  

Surface characteristics and oxygen sensitivity of TiO_2 doped by Mo^(6+)

作　　者：范信强[1] 潘海波[1] 黄金陵[1] 陈耐生[1] 

机构地区：[1]福州大学功能材料研究所,福州350002

出　　处：《功能材料与器件学报》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)

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.

关 键 词：TIO2 Mo^6+掺杂 表面特性 氧敏特性 

分 类 号：TB381[一般工业技术—材料科学与工程]