Development of zinc oxide-graphene gas sensor for methane detection with IoT

Mohd Yatim, Fatin Liyana Syakinah (2024) Development of zinc oxide-graphene gas sensor for methane detection with IoT. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

Text (Full Text) Development of zinc oxide-graphene gas sensor for methane detection with IoT.pdf Download (2MB)

Abstract

Methane (CH₄), a highly explosive gas, ignites rapidly when exposed to heat, sparks, or flames, reaching 150,000 ppm when oxygen is insufficient, causing the gas to burn without explosive elements. High methane gas concentrations can also contribute to global warming, as of 2021, the atmospheric methane concentration was 17 parts per million. By the end of the next century, this concentration could rise to over 4 ppmv, which would cause the Earth's surface temperature to rise by more than 0.5°C on average. Next, asphyxiation occurs from methane's reduction of oxygen at high concentrations which at 500,000 ppm. In this study, zinc oxide and graphene will be used due to their unique properties, a screen-printing deposition method, and a kapton substrate for enhanced sensitivity towards methane gas. Thus, this study aims to fabricate a methane gas sensor using zinc oxide-graphene by screen-printing method. Next, zinc oxide-graphene gas sensor will be integrated with ESP32, Blynk software to monitor the methane in real time application. High response of zinc oxidegraphene gas sensor towards methane gas is achieved where zinc oxide with 5 w.t.% is having the highest response value which is 11.5. A prototype is produced with IoT system that monitor methane in room operating temperature.

Actions (login required)

View Item