摘要
以碳微球为模板,并以ZIF-8作为锌源,成功合成了中空氧化锌微球,同时对合成的中空氧化锌微球进行了粉末X-射线衍射(PXRD)和扫描电镜(SEM)的表征,并将所合成的中空氧化锌微球制备成气敏元件,然后对其进行了气敏性能的测试.结果表明:所合成的中空ZnO微球的物相单一,其直径大约在5~8μm.气敏测试结果也表明:该气敏元件在最佳工作温度下(200℃)对乙醇气体表现出良好的选择性和较高的灵敏度(在w=1×10^(-4)的乙醇气体中,其灵敏度为38).该气敏元件对w=1×10^(-4)的乙醇气体的响应时间和恢复时间分别为20 s和28 s.研究结果证实:所合成的ZnO中空微球具有工作温度低,灵敏度高,选择性好等优点.
In the report, carbon sphere was used as the template, and ZIF-8 was used as the souce of Zn, ZnO hollow sphere structures were successfully synthesized, and which was characterized by field emission scanning electron microscopy （SEM） and X-ray powder diffraction （PXRD）, the gas sensing properties of as-prepared products to ethanol were also investigated. The results indicated the ZnO hollow sphere structures were single crystalline ZnO samples with diameter of about 5-8 μm. The sensor based on ZnO hollow sphere structures exhibited excellent selectivity and high sensitivity toward ethanol at optimum temperature of 200 ℃, giving a response of about 38 to 100 ppm ethanol. At 200 ℃, the senson＇ s response and recovery time to lO0ppm ethanol was 20 s and 28 s respectively. The synthesized ZnO hollow spheres showed the advantages of low temperature, high sensitivity and good selectivity.
作者
岑远
胡军
周思慧
涂全
任国建
潘勤鹤
韩秀萍
Cen Yuan Hu Jun Zhou Sihui Tu Quan Ren Guojian Pan Qinhe Han Xiuping(College of Materials and Chemical Engineering, Hainan University, Haikou 570228, Chin)
出处
《海南大学学报（自然科学版）》
CAS
2017年第2期124-130,共7页
Natural Science Journal of Hainan University
基金
海南大学科研启动基金(kyqd1654)
海南省自然科学基金(20152030)
