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Vol. 33 No. 12 (2021): Vol 33 Issue 12, 2021

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Silver Doped Polyaniline-Graphene Based Barium Ferrite Composite as Humidity Sensor and Photocatalyst

https://doi.org/10.14233/ajchem.2021.23439
K. Vinay
Department of Chemistry, Channabasaveswara Institute of Technology, Gubbi-572216, India
Y.T. Ravikiran
Department of PG Studies & Research in Physics, Government Science College, Chitradurga-577501, India
M. Revanasiddappa
Department of Chemistry, PES University South Campus, Hosur Road, Bangalore-560100, India
A. Naveen Kumar
Research Centre, Department of Basic Science, East West Institute of Technology, (Affiliated to Visvesvaraya Technological University), Bangalore-560091, India
K. Veena
Department of Chemistry, Maharani’s Science College for Women, Bangalore-560001, India
C.R. Ravikumar
Research Centre, Department of Basic Science, East West Institute of Technology, (Affiliated to Visvesvaraya Technological University), Bangalore-560091, India
H.C. Ananda Murthy
Department of Applied Chemistry, School of Applied Natural Science, Adama Science and Technology University, P.O. Box 1888, Adama, Ethiopia

Corresponding Author(s) : C.R. Ravikumar

ravicr128@gmail.com

Asian Journal of Chemistry, Vol. 33 No. 12 (2021): Vol 33 Issue 12, 2021

Abstract

In this work, the response of humidity sensing and dielectric properties of PANI/Ag/graphene/BaFe12O19 (PAGB) composite prepared by chemical interfacial oxidative polymerization method using the ammonium peroxydisulfate as an oxidant is presented. The synthesized PAGB composite was characterized by using FT-IR, XRD, SEM and EDAX techniques. The measured dielectric constant and dielectric tangent loss values were found to decrease with increase in logarithmic frequency. The electrical resistance of the composite was also found to decrease from 2500 MΩ to 7 MΩ, on exposure to a wide range of relative humidity (RH) varying between 10% and 97% RH. This observed decrease is due to capillary condensation of water molecules which cause the changes in electrical conductivity of composite. The synthesized PAGB-50% composite displayed a high sensitivity at low humidity ranging from 20% to 60% RH. The composite has been proved to be a better candidate in the design of humidity sensors. In addition, PAGB composite exhibited efficiency towards the degradation of organic anionic dye, acid orange-8, with high potential of reusability.

Keywords

Composites Barium ferrite Polyaniline Graphene Humidity sensor Acid orange 8 dye
Vinay, K., Ravikiran, Y., Revanasiddappa, M., Naveen Kumar, A., Veena, K., Ravikumar, C., & Ananda Murthy, H. (2021). Silver Doped Polyaniline-Graphene Based Barium Ferrite Composite as Humidity Sensor and Photocatalyst. Asian Journal of Chemistry, 33(12), 3075–3081. https://doi.org/10.14233/ajchem.2021.23439
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