Studies on room-temperature acetone sensing properties of ZnCo2O4/PPy and MnCo2O4/PPy nanocomposites for diabetes diagnosis

• Published in: Applied physics. A, Materials science & processing Vol. 128; no. 8
• Main Authors: Ananda, Sutar Rani, Kumari, Latha, M V, Murugendrappa
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.08.2022; Springer Nature B.V
• Subjects: Acetone; Applied physics; Carbon dioxide; Characterization and Evaluation of Materials; Condensed Matter Physics; Diagnosis; Gas sensors; Heterojunctions; Hydrogen sulfide; Machines; Manufacturing; Materials science; Methane; Nanocomposites; Nanoparticles; Nanotechnology; Optical and Electronic Materials; Physics; Physics and Astronomy; Polypyrroles; Processes; Room temperature; Surfaces and Interfaces; Thin Films; Manganese–cobalt oxide; Zinc–cobalt oxide; Nanocomposites; Acetone sensor; Diabetes diagnosis; Polypyrrole
• ISSN: 0947-8396; 1432-0630
• DOI: 10.1007/s00339-022-05792-7

ZnCo 2 O 4 /Polypyrrole (ZCO/PPy) and MnCo 2 O 4 /Polypyrrole (MCO/PPy) nanocomposites with different weight percentages were successfully prepared using the in situ chemical polymerization method. The comparative chemiresistive gas sensing performance of ZCO/PPy and MCO/PPy nanocomposites was studied toward methane (CH 4 ), hydrogen sulfide (H 2 S), acetone (C 3 H 6 O), and carbon dioxide (CO 2 ). Both the nanocomposites have shown better sensitivity toward acetone gas at room temperature than other gasses. Among the studied materials, MCO-30/PPy nanocomposite can detect acetone at 2.5 ppm level and be a choice for further studies related to medical perspective (diabetes diagnosis). The gas sensing mechanism in ZCO/PPy and MCO/PPy was explained based on the heterojunction formed between ZCO/MCO nanoparticles and PPy.