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11.
稀土掺杂氧化铟低功耗汽油敏感材料的研究 总被引:2,自引:1,他引:2
采用微乳液法合成了纳米In2O3粉体,分别采用浸渍法和共沉淀法制备了掺杂Y2O3和Nd2O3的氧化铟。利用X射线衍射、透射电镜对氧化铟的结构和形貌进行了表征;采用静态配气法对氧化铟的气敏特性进行了测试。结果表明:微乳液法合成的氧化铟经600℃,1 h煅烧后,颗粒尺寸约20nm,且分布均匀。未掺杂的氧化铟气敏元件对汽油有较高的灵敏度,但选择性不好;氧化钕和氧化钇掺杂后,在3.0V工作电压下大大提高了氧化铟对汽油的灵敏度和选择性,氧化钇掺杂量为5.0%时对汽油的最大灵敏度达到了285.1,功耗只有200mW. 相似文献
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溶剂热制备氧化锌纳米线 总被引:10,自引:0,他引:10
ZnO nanowires were synthesized mildly through an absolute alcohol solvothermal process at 120 ℃ for 12 h using ZnAc2·2H2O and NaOH as raw materials and PEG400 as a soft template. The cyrstal structure and morphology of the nanowires were characterized by XRD, SEM, TEM and HRTEM. The results indicate that the diameter of ZnO nanowires is 40 nm, the length can reach 2 μm and the nanowires are of high purity, homogeneity and well crystallinty. The influence of the various factors on the formation of ZnO nanowires and formation mechanism were also discussed. 相似文献
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