基于Sr掺杂SnO2纳米纤维的对丙酮具有增强鉴别能力的乙醇化学电阻器。
Ethanol chemiresistor with enhanced discriminative ability from acetone based on Sr-doped SnO2 nanofibers.
作者信息
Jiang Ziqiao, Jiang Tingting, Wang Jinfeng, Wang Zhaojie, Xu Xiuru, Wang Zongxin, Zhao Rui, Li Zhenyu, Wang Ce
机构信息
Alan G. MacDiarmid Institute, Jilin University, Changchun 130012, PR China.
Alan G. MacDiarmid Institute, Jilin University, Changchun 130012, PR China; Department of Catalysis Science and Engineering, School of Chemical Engineering and Technology, Harbin Institute of Technology, Harbin 150001, PR China.
出版信息
J Colloid Interface Sci. 2015 Jan 1;437:252-258. doi: 10.1016/j.jcis.2014.09.056. Epub 2014 Sep 30.
We demonstrated a new metal oxides based chemiresistor (MOC), which exhibits fast response/recovery behavior, large sensitivity, and good selectivity to ethanol, enabled by Sr-doped SnO2 nanofibers via simple electrospinning and followed by calcination. Transmission electron microscopy (TEM), scanning electron microscopy (SEM), X-ray diffraction (XRD), and X-ray photoelectron spectra (XPS) were carefully used to characterize their morphology, structure, and composition. The ethanol sensing performances based on Sr-doped SnO2 nanofibers were investigated. Comparing with the pristine SnO2 nanofibers, enhanced ethanol sensing performances (more rapid response/recovery behavior and larger response values) have been achieved owing to the basic SnO2 surface caused by Sr-doping, whereas the acetone sensing performances have been weakened. Thus, good discriminative ability to ethanol from acetone has been realized. Additionally, Sr-doped SnO2 nanofibers also exhibit good selectivity.
我们展示了一种新型的基于金属氧化物的化学电阻器（MOC），它通过简单的静电纺丝法制备Sr掺杂的SnO2纳米纤维并随后进行煅烧，对乙醇表现出快速响应/恢复行为、高灵敏度和良好的选择性。透射电子显微镜（TEM）、扫描电子显微镜（SEM）、X射线衍射（XRD）和X射线光电子能谱（XPS）被仔细用于表征它们的形态、结构和组成。研究了基于Sr掺杂的SnO2纳米纤维的乙醇传感性能。与原始的SnO2纳米纤维相比，由于Sr掺杂导致SnO2表面呈碱性，实现了增强的乙醇传感性能（更快的响应/恢复行为和更大的响应值），而丙酮传感性能则被削弱。因此，实现了对乙醇和丙酮的良好鉴别能力。此外，Sr掺杂的SnO2纳米纤维还表现出良好的选择性。
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