基于聚苯胺/SnO₂纳米复合材料的高响应一氧化碳传感器

High Response CO Sensor Based on a Polyaniline/SnO₂ Nanocomposite.

作者信息

Jian Kai-Syuan, Chang Chi-Jung, Wu Jerry J, Chang Yu-Cheng, Tsay Chien-Yie, Chen Jing-Heng, Horng Tzyy-Leng, Lee Gang-Juan, Karuppasamy Lakshmanan, Anandan Sambandam, Chen Chin-Yi

机构信息

Department of Materials Science and Engineering, Feng Chia University, Taichung 407, Taiwan.

Department of Chemical Engineering, Feng Chia University, Taichung 407, Taiwan.

出版信息

Polymers (Basel). 2019 Jan 21;11(1):184. doi: 10.3390/polym11010184.

DOI:10.3390/polym11010184

PMID:30960168

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6401732/

Abstract

A polyaniline (PANI)/tin oxide (SnO₂) composite for a CO sensor was fabricated using a composite film composed of SnO₂ nanoparticles and PANI deposition in the present study. Tin oxide nanoparticles were synthesized by the sol-gel method. The SnO₂ nanoparticles provided a high surface area to significantly enhance the response to the change in CO concentration at low operating temperature (<75 °C). The excellent sensor response was mainly attributed to the relatively good properties of PANI in the redox reaction during sensing, which produced a great resistance difference between the air and CO gas at low operating temperature. Therefore, the combination of -type SnO₂ nanoparticles with a high surface area and a thick film of conductive PANI is an effective strategy to design a high-performance CO gas sensor.

摘要

在本研究中，通过由二氧化锡（SnO₂）纳米颗粒和聚苯胺（PANI）沉积组成的复合膜制备了一种用于一氧化碳（CO）传感器的聚苯胺（PANI）/二氧化锡（SnO₂）复合材料。采用溶胶 - 凝胶法合成了二氧化锡纳米颗粒。二氧化锡纳米颗粒提供了高比表面积，以在低工作温度（<75°C）下显著增强对CO浓度变化的响应。优异的传感器响应主要归因于聚苯胺在传感过程中的氧化还原反应中具有相对良好的性能，这在低工作温度下在空气和CO气体之间产生了很大的电阻差。因此，将具有高比表面积的n型二氧化锡纳米颗粒与导电聚苯胺厚膜相结合是设计高性能CO气体传感器的有效策略。