基于 Co 掺杂 In₂O₃ 纳米线的高效快速乙醇传感。

Highly efficient rapid ethanol sensing based on Co-doped In₂O₃ nanowires.

机构信息

Department of Engineering Mechanics, Nebraska Center for Materials and Nanoscience, University of Nebraska-Lincoln, Lincoln, NE 68588-0526, USA.

出版信息

Talanta. 2011 Jul 15;85(1):82-5. doi: 10.1016/j.talanta.2011.03.033. Epub 2011 Apr 15.

DOI:10.1016/j.talanta.2011.03.033

PMID:21645673

Abstract

Pristine and Co-doped In(2)O(3) nanowires were synthesized via electrospinning with subsequent calcination. Scanning electron microscopy, X-ray diffraction, and energy-dispersive X-ray spectroscopy were used to characterize nanowire morphology and structure. Ethanol sensing performance analyzed in the range of temperatures and concentrations showed that Co-doped In(2)O(3) nanowires exhibited significantly enhanced sensitivity and rate of performance with the response and recovery times of 2s and 3s, respectively. Combined with excellent selectivity and linearity, these properties make the fabricated nanowires a good candidate for practical ethanol sensing. Further performance improvements are possible with utilization of nanofiber continuity intrinsic of the used top-down nanowire nanomanufacturing process.

摘要

通过静电纺丝和随后的煅烧，合成了纯净和共掺杂的 In(2)O(3)纳米线。扫描电子显微镜、X 射线衍射和能谱分析用于表征纳米线的形态和结构。在温度和浓度范围内对乙醇传感性能的分析表明，共掺杂的 In(2)O(3)纳米线表现出显著增强的灵敏度和性能速率，响应和恢复时间分别为 2s 和 3s。结合出色的选择性和线性度，这些特性使制备的纳米线成为实用乙醇传感的良好候选材料。通过利用所使用的自上而下纳米线纳米制造工艺的纳米纤维连续性，可以进一步提高性能。