Cr掺杂ZnO纳米纤维的低温氧敏性能  

Oxygen Sensing Property of Cr Doped ZnO Nanofiber at Low Temperature

作　　者：欧刚[1] 贾秋阳[1] 刘巍[1] 姚蕾[1] 潘伟[1] 

机构地区：[1]清华大学 新型陶瓷与精细工艺国家重点实验室,北京100084

出　　处：《稀有金属材料与工程》2013年第S1期29-32,共4页Rare Metal Materials and Engineering

基　　金：国家自然科学基金(50872063)

摘　　要：采用静电纺丝法制备了Cr掺杂ZnO纳米纤维,通过DSC-TG、Raman和SEM等表征了纳米纤维的热学性质、物相和微观形貌,并测量了所制备纳米纤维的低温氧敏性能。研究了煅烧温度和Cr掺杂含量对纳米纤维低温氧敏性能的影响。结果表明:所制备的纳米纤维直径均匀,表面光滑;在600℃煅烧的1%Cr掺杂含量的ZnO纳米纤维具有最佳的低温氧敏性能,并分析了各因素的影响及其可能的机理。Cr doped ZnO nanofibers were synthesized by an electrospinning method. Thermal property, crystal structure and morphology of the nanofibers were characterized by DSC/TG, Raman and SEM, respectively. Low temperature oxygen sensing property of the nanofibers was also measured. The influence of calcination temperature and Cr content on oxygen sensing property was studied. Results show that the obtained nanofibers were uniform in diameter, with smooth surface and large aspect ratio. The obtained ZnO nanofibers possess the best low temperature oxygen sensing property when calcinated at 600 ℃ with 1% Cr. The influence of calcination temperature and Cr content as well as possible mechanism were discussed.

关 键 词：ZNO 纳米纤维 氧敏传感器 电纺丝 

分 类 号：TN304[电子电信—物理电子学]