Biological and electrochemical Sensor detection studies of ZrO2 wrapped by reduced Graphene Oxide nanocomposite

Nanosensor rgraphene ZrO2

Authors

  • C Sanjeevarayappa Government First grade College, Yelahanka
  • P Nagegowda Government First grade College, Channapatna
  • M Mylarappa Bangalore University, Bengaluru
  • S Chandruvasan KLE Society's S Nijalingappa College, Rajajinagar, Bengaluru
  • R Sandhya Karnatak University, Pavate Nagar, Dharwad
  • SG Prasanna Kumar MS Ramaiah College of Arts, Science and Commerce, Bengaluru

Keywords:

reduced graphene, Nanosensors, electrochemical performance, sensor studies, ZrO2

Abstract

The present work reports synthesis of ZrO2 nanoparticles wrapped by reduced graphene doped (rGO) nanosheet through simple reflux method. The sample was characterized using XRD, FE-SEM, EDAX, FTIR, UV-Visible techniques. The optical bandgap was calculated using Tauc’s method and found to be ZrO2 and ZrO2/rGO are 1.47 and 1.25 eV, respectively. The prepared rGO/ZrO2 was established over anti-fungal, anticancer, and antioxidant studies. Anti-fungal activity against Penicillium sp. and Aspergillus Niger shows the enhanced zone of inhibition in both fungal species at increased concentration of ZrO2 and ZrO2/rGO samples. Penicillium sp. displays greater inhibition zones in both samples compared to Aspergillus Niger. The anticancer activity of ZrO2/rGO conjugated with doxorubicin exhibit comparable activity on HeLa cells. The sample shows 82% free radical scavenging activity using 2,2-diphenylpicrylhydrazyl (DPPH) free radical, with IC50 value of 31 mg/mL. The electrochemical techniques were assessed to know the capacitance and sensing performance against lysine sensor. There has been a significant improvement in electrochemical behavior such as specific capacitance (Csp), diffusion coefficient (D) and sensing behavior and shows better sensing properties using prepared material.

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Author Biographies

  • C Sanjeevarayappa, Government First grade College, Yelahanka

    Department of Chemistry

  • P Nagegowda, Government First grade College, Channapatna

    Department of Chemistry

  • M Mylarappa , Bangalore University, Bengaluru

    Department of Studies in Chemistry

  • S Chandruvasan, KLE Society's S Nijalingappa College, Rajajinagar, Bengaluru

    Department of Chemistry

  • R Sandhya, Karnatak University, Pavate Nagar, Dharwad

    Department of Studies in Chemistry

  • SG Prasanna Kumar, MS Ramaiah College of Arts, Science and Commerce, Bengaluru

    Department of Chemistry

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Published

2024-07-23

Issue

Section

Nanosensors

URN

How to Cite

(1)
Sanjeevarayappa, C.; Nagegowda, P.; Mylarappa , M.; Chandruvasan, S.; Sandhya, R.; Kumar, S. P. . Biological and Electrochemical Sensor Detection Studies of ZrO2 Wrapped by Reduced Graphene Oxide Nanocomposite. J Mater NanoSci 2024, 11 (1), 952.

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