Agus Mifthakhul Riska, Nabila Khansa Hanifa, Isbatus Sabillah, Lailatus Syafa’ah, Nugrahani Primary Putri
Polyaniline is a polymer that has a sufficient good conductivity. This study successfully characterized the sensitivity of PANI applied as a gas sensor for Benzene, Toluene, and Xylene, or commonly referred to as BTX gas. Samples were prepared by the oxidation polymerization method and then tested for BTX gas performance to determine sensitivity, reversibility, response time, and recovery time. The performance of PANI functional material was determined by measuring the resistance change with Four Point Probe (FPP). Gas concentration variations were carried out, namely 5 ppm, 10 ppm, 15 ppm, 20 ppm, and 25 ppm, respectively. The sensitivity test results showed that PANI experienced resistance changes due to interaction with BTX gas. With different concentrations, PANI sensitivity also has different values. The most excellent sensitivity is obtained when PANI detects Toluene gas at a concentration of 25 ppm, which is 12.5%. PANI also reverses wellbecause the resistance value can return to the initial value. Another performance observed isthe response time of 54.24 seconds and recovery time of 52.42 seconds, which is the longesttime when exposed to 25 ppm Xylene gas. It can be concluded that the PANI powder samplewe made can be used as a primary material for making BTX gas sensors. From that it can be concluded that the sample powder of PANI that we made can be used as a primary material for making BTX gas sensors. © 2024 Author(s).
Physics Department, Faculty of Mathematics and Natural Sciences, Universitas Negeri Surabaya, Jl. Ketintang, Surabaya, 60231, Indonesia
