偏锡酸锌空心立方体的合成及其乙醇气敏性能  

Fabrication of Zinc Stannate Hollow Cubes and Their Sensing Properties for Ethanol

作　　者：舒绍明 刘翎玥 刘善堂[1,2] 

机构地区：[1]武汉工程大学化学与环境工程学院,湖北武汉430205 [2]绿色化工过程教育部重点实验室(武汉工程大学),湖北武汉430205

出　　处：《武汉工程大学学报》2017年第2期141-146,共6页Journal of Wuhan Institute of Technology

基　　金：国家自然科学基金(21471120)

摘　　要：采用简易的一步共沉淀法合成偏锡酸锌空心立方体.利用扫描电子、透射电子显微镜、X射线衍射、固体紫外、氮气吸附比表面测试等表征手段对该材料形貌和结构进行表征,结果表明,所合成的偏锡酸锌空心立方体边长约为1.4μm,立方体的壁厚约为210 nm,而且尺寸均匀.气敏性能测试研究表明,偏锡酸锌空心立方体材料对乙醇表现出优异的气敏性能,其最佳工作温度为175℃,并且对体积分数为百万分之一的乙醇气体的响应为1.7.因此,偏锡酸锌空心立方体材料可以做为一种优良的气敏材料.Zinc stannate hollow cubes were successfully prepared via a simple one-step co-precipitation method, and the morphology and structure were characterized by scanning electron microscopy, transmission electron microscopy, X-ray diffraction, UV-vis diffuse reflectance spectra and Brunauer-Emmett-Teller. The results indicate that the zinc stannate is a kind of hollow cubic structure with aside length of 1.4 μm, and the wall thickness of the cubes is about 210 nm with uniform size. The tests show that the sensor based on the hollow cubic zinc stannates has excellent gas sensitivity to ethanol, and its response to volume fraction one millionth of ethanol gas is about 1.7 at the optimum working temperature of 175 ℃. Therefore, the hollow cubic zinc stannates can he used as an excellent gas-sensing material.

关 键 词：空心立方体 偏锡酸锌 气敏传感器 乙醇 

分 类 号：TQ132.4[化学工程—无机化工] R318.08[医药卫生—生物医学工程]