Synthesis of Nitrogen-Enriched 3D Graphene Foam for Electrochemical Sensing of Hydrogen Peroxide (H₂O₂)

Bhargavi Dronavalli, Department of Chemistry, Acharya Nagarjuna University, Guntur 522 510, Andhra Pradesh, India.
Madhava Rao Vallabhaneni, Department of Chemistry (Recognized as Research centre by ANU), Bapatla Engineering College (Autonomous), Bapatla 522102, India.Follow
Jatla Murali Prakash, Department of Chemistry, Koneru Lakshmaiah Education Foundation, Greenfields, Vaddeswaram, Guntur, 522502, Andhra Pradesh, India.
Deepti Kolli, Department of Chemistry, Koneru Lakshmaiah Education Foundation, Greenfields, Vaddeswaram, Guntur, 522502, Andhra Pradesh, India.Follow
Dandamudi Srilaxmi, Department of Chemistry, Parvathaneni Brahmayya Siddhartha College of arts & Science, Vijayawada-10., Andhra Pradesh, India

Abstract

In this work, A simple hydrothermal process was utilized to create 3D-foam-type Nitrogen-doped graphene (NDG). The synthesized material was characterized using a range of physicochemical characterization techniques. These techniques confirm that nitrogen is successfully incorporated into the carbon network, resulting in NDG. Cyclic voltammetry (CV) investigation demonstrated that NDG-modified glassy carbon electrode (NDG/GCE) displayed finite charge transfer properties against typical redox systems. NDG/GCE is identified as a simple, facile, and efficient electrocatalyst material for the estimation of hydrogen peroxide (H₂O₂). From CV analysis, it is revealed that NDG/GCE can produce a signal for electrochemical quantification of H₂O₂ at an applied overpotential of -0.15 V. The GCE and GO/GCE were unable to respond to the estimation of H₂O₂. However, NDG/GCE exhibited finite sensitivity and linearity for a concentration range of 0.5 µM to 16 µM. This was examined using amperometric protocols, where the detection limit and observed sensitivity for NDG/GCE are 0.3 μM and 0.34 μA/μM respectively. The selectivity study has further revealed that the electrode can produce a signal selectively towards H₂O₂ in the presence of other possible foreign molecules. In conclusion, the electrode is determined to be stable for 15 days concerning the electrochemical estimation of H₂O₂ with the aid of stability investigations

Recommended Citation

Dronavalli, Bhargavi; Vallabhaneni, Madhava Rao; Prakash, Jatla Murali; Kolli, Deepti; and Srilaxmi, Dandamudi (2025) "Synthesis of Nitrogen-Enriched 3D Graphene Foam for Electrochemical Sensing of Hydrogen Peroxide (H₂O₂)," Karbala International Journal of Modern Science: Vol. 11 : Iss. 4 , Article 7.
Available at: https://doi.org/10.33640/2405-609X.3433