| 凝胶网格法制备纳米CdFe2O4粉体及其对CH3SH的气敏性 |
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| 引用本文： | 王丽斐,王换荣,陆维昌,陈邦林. 凝胶网格法制备纳米CdFe2O4粉体及其对CH3SH的气敏性[J]. 化学世界, 2008, 49(2): 65-67,78,81 |
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| 作者姓名： | 王丽斐 王换荣 陆维昌 陈邦林 |
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| 作者单位： | 华东师范大学化学系,上海,200062;华东师范大学化学系,上海,200062;华东师范大学化学系,上海,200062;华东师范大学化学系,上海,200062 |
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| 摘 要： | 以无机盐为原料,采用凝胶网格法合成了尖晶石型复合氧化物CdFe2O4的前驱体,并在700°C热处理后得到了纳米尺寸CdFe2O4粉体,利用XRD和TEM对粉体的形貌、结构进行了表征。研究表明,用凝胶网格法制备的CdFe2O4结晶良好,粒度分布均匀,平均粒径为21.3 nm。以CdFe2O4纳米粉体为原料制备了厚膜型气敏元件。CdFe2O4是电子导电型半导体,当加热电压为6.5 V时,该元件对甲硫醇具有较高的灵敏度,较好的稳定性和选择性。
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| 关 键 词： | 铁酸镉纳米粉体 凝胶网格法 气敏性能 甲硫醇 |
| 文章编号： | 0367-6358（2008）02-065-04 |
| 收稿时间： | 2007-08-10 |
| 修稿时间： | 2007-12-20 |
Gas Sensitivity of CdFe2O4 Synthesized by Gel-gridding Method for CH3 SH |
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| WANG Li-fei,WANG Huan-rong,LU Wei-chang,CHEN Bang-lin. Gas Sensitivity of CdFe2O4 Synthesized by Gel-gridding Method for CH3 SH[J]. Chemical World, 2008, 49(2): 65-67,78,81 |
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| Authors: | WANG Li-fei WANG Huan-rong LU Wei-chang CHEN Bang-lin |
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| Abstract: | Nanocrystalline spinel-type complex oxide CdFe_2O_4 was synthesized by calcining oxide obtained from gel-gridding method with inorganic reagents at 700(°C).The results of XRD and TEM indicate that the mean grain size of the powder is about 21.3 nm.The gas-sensing properties of the pure powders were studied.The sensors based on CdFe_2O_4 show high sensitivity and selectivity to CH_3SH at a heating voltage of 6.5 V. |
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| Keywords: | CdFe2O4 gel-gridding method gas sensing CH3SH |
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