GO/CuO Nanohybrid-Based Carbon Dioxide Gas Sensors with an Arduino Detection Unit

Nagesh Bhat; Shareefraza J Ukkund; Momin Ashraf; Krishnaraja Acharya; Naveenkumar J Ramegouda; Prasad Puthiyillam; Mohd Abul Hasan; Saiful Islam; Vinaya B Koradoor; Adarsh D Praveen; Mohammad Amir Khan

doi:10.1021/acsomega.3c02598

GO/CuO Nanohybrid-Based Carbon Dioxide Gas Sensors with an Arduino Detection Unit

ACS Omega. 2023 Aug 29;8(36):32512-32519. doi: 10.1021/acsomega.3c02598. eCollection 2023 Sep 12.

Authors

Affiliations

¹ Department of Nano Technology, Srinivas Institute of Technology, Mangaluru 574143, Karnataka, India.
² Department of Biotechnology, PA College of Engineering, Mangalore 574153, Karnataka, India.
³ College of Engineering and Technology, Srinivas University, Mangaluru 574146, Karnataka, India.
⁴ Civil Engineering Department, College of Engineering, King Khalid University, Abha 61421, Saudi Arabia.
⁵ Department of EEE, Channabasaveshwara Institute of Technology, Tumkur 572216, Karnataka, India.
⁶ Bioinnovation Centre, Bangalore 560100, Karnataka, India.
⁷ Department of Civil Engineering, Galgotia College of Engineering, Greater Noida 201310, India.

Abstract

A gas sensor is a device that detects the presence of gases in a specific area. This research work demonstrates the effectiveness of gas sensors based on graphene oxide (GO) and copper oxide (CuO) semiconductor nanomaterials for the detection of carbon dioxide. GO and CuO were prepared by the modified Hummer's method and precipitation method using CuCl₂ as a precursor, respectively. These materials are made into a hybrid using poly(vinyl alcohol) (PVA)/poly(vinylpyrrolidone) (PVP) polymer solutions of low concentrations and are spin coated onto the pattern-etched copper-clad substrate. The sensor is tested using a source measurement unit (SMU) to obtain the change in the resistance of the sensor in open air and in a carbon dioxide environment. The fabricated sensor with an Arduino microcontroller detection unit showed a good sensing response of 60%.