基于 PANI 修饰的 Cu-ZnS 多孔微球的电容式湿度传感器。

Capacitive type humidity sensor based on PANI decorated Cu-ZnS porous microspheres.

机构信息

Centre for Advanced Materials (CAM), Qatar University, P.O. Box 2713, Doha, Qatar.

Department of Electrical Engineering, College of Engineering, Qatar University, P.O. Box 2713, Doha, Qatar.

出版信息

Talanta. 2020 Nov 1;219:121361. doi: 10.1016/j.talanta.2020.121361. Epub 2020 Jul 7.

DOI:10.1016/j.talanta.2020.121361

PMID:32887084

Abstract

Porous microstructure materials are considered good candidates for the development of highly sensitive and fast humidity sensors. In this regard, we prepared polyaniline (PANI) decorated Cu-ZnS porous microsphere structures (PMSs) for the fabrication of humidity sensors. PANI coated Cu-ZnS PMSs were synthesized by a hydrothermal method and in situ polymerization process. The synthesized PMSs were characterized by different techniques to study the structural, morphological and surface absorption properties. Several compositions for the PANI/Cu-ZnS PMS were investigated, which were then compared with pure PANI. The experimental observations demonstrate that a PANI/1%Cu-ZnS PMS has better sensitivity, fast response and good stability compared to pure PANI and other PANI/CuZnS compositions. Finally, a PANI/1% Cu-ZnS PMS was found to be optimized for humidity sensors due to its well distributed roughness, porosity and hydrophilicity. The average response and recovery times for PANI/1% Cu-ZnS were found to be 42 s and 24 s, respectively, which outperform recent results.

摘要

多孔微结构材料被认为是开发高灵敏度和快速湿度传感器的良好候选材料。在这方面，我们制备了聚苯胺（PANI）修饰的 Cu-ZnS 多孔微球结构（PMSs），用于制造湿度传感器。PANI 涂覆的 Cu-ZnS PMS 通过水热法和原位聚合过程合成。通过不同的技术对合成的 PMS 进行了表征，以研究其结构、形态和表面吸收特性。研究了几种不同组成的 PANI/Cu-ZnS PMS，并将其与纯 PANI 进行了比较。实验观察表明，与纯 PANI 和其他 PANI/CuZnS 组成相比，PANI/1%Cu-ZnS PMS 具有更好的灵敏度、快速响应和良好的稳定性。最后，由于 PANI/1%Cu-ZnS 具有良好的粗糙度、多孔性和亲水性，因此被认为是优化的湿度传感器材料。PANI/1%Cu-ZnS 的平均响应和恢复时间分别为 42 s 和 24 s，优于最近的研究结果。