| TiO2基有机气体敏感元件的制备及性能研究 |
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| 引用本文： | 王欢,肖定全,胡国斌,余萍. TiO2基有机气体敏感元件的制备及性能研究[J]. 功能材料, 2005, 36(6): 862-864,868 |
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| 作者姓名： | 王欢 肖定全 胡国斌 余萍 |
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| 作者单位： | 四川大学,材料科学系,四川,成都,610064;四川大学,材料科学系,四川,成都,610064;四川大学,材料科学系,四川,成都,610064;四川大学,材料科学系,四川,成都,610064 |
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| 基金项目： | 国家自然科学基金资助项目(50172032) |
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| 摘 要： | 将多种金属氧化物掺入TiO2中，通过传统的陶瓷气敏传感器制备技术，制作了旁热式烧结型传感器，研究了这些传感器对有机挥发性气体(VOCs)的敏感特性。在不同浓度的甲醛、苯、丙酮和乙醇气氛中，测试了传感器的气敏特性。测试结果表明，添加In2O3、Cr2O3或SnO2能提高传感器对苯的灵敏度，添加In2O3或Cr2O3能提高传感器对丙酮的灵敏度，添加Cr2O3或SnO2的元件对甲醛气体较灵敏。此外，本文还研究了传感器陶瓷的烧结温度对传感器气敏特性的影响。
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| 关 键 词： | TiO2 陶瓷气敏元件 有机挥发性气体(VOCs) 灵敏度 选择性 |
| 文章编号： | 1001-9731(2005)06-0862-03 |
Preparation and performances of TiO2 based volatile organic gas sensors |
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| WANG Huan,XIAO Ding-quan,HU Guo-bing,YU Ping. Preparation and performances of TiO2 based volatile organic gas sensors[J]. Journal of Functional Materials, 2005, 36(6): 862-864,868 |
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| Authors: | WANG Huan XIAO Ding-quan HU Guo-bing YU Ping |
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| Abstract: | TiO_2 sensors to volatile organic gases with the dopant of several metal-oxide were prepared by conventional ceramic sensor technology. The response of these gas sensors to formaldehyde, benzene, acetone and alcohol were studied. The results show that the In_2O_3, Cr_2O_3 or SnO_2 doped sensors can improve the sensitivities of the sensors to volatile organic gases, and all of the sensors investigated are sensitive to benzene gas. The In_2O_3 or Cr_2O_3 doped sensors have the selectivity to acetone. And the Cr_2O_3 or SnO_2 doped sensors possess satisfied selectivity to formaldehyde gas. In addition, the influence of the sintering temperature of the gas ceramics on the sensitivities of the sensors were also studied. |
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| Keywords: | TiO_2 ceramic gas sensors VOCs sensitivity selectivity |
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