Eco-friendly green synthesis of Ag@Cu bimetallic nanoparticles: Evaluation of their structural, morphological and electrochemical characterizations

The present study focuses on the preparation of silver/copper bimetallic hybrid nanoparticles by green method from precursor solutions of silver nitrate & copper nitrate and the locally available citrus fruit (lemon) peel extract which behaves as the stabilizing and reducing agent. Initially, the formation of hybrid nanoparticles was noticed in the reaction mixture by colour change.
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Eco-friendly green synthesis of Ag@Cu bimetallic nanoparticles: Evaluation of their structural, morphological and electrochemical characterizationsCite this paper: Vietnam J. Chem., 2023, 61(2), 220-226 Research articleDOI: 10.1002/vjch.202200126 Eco-friendly green synthesis of Ag@Cu bimetallic nanoparticles: Evaluation of their structural, morphological and electrochemical characterizations Shaik Nagul Shareef1, Kalli Sai Bhavani2, Tummala Anusha3*, Pallapati Priyanka4, M. Subba Rao5 1 Research Scholar, Department of Chemistry, Acharya Nagarjuna University, Andhra Pradesh, India 2 Lecturer in Department of Chemistry, Andhra Loyola College, Andhra Pradesh, India 3 Department of Basic Science and Humanities (Chemistry), Narasaraopeta Engineering College, Narasaraopeta, Andhra Pradesh, India 4 Lecturer in Department of Chemistry, Andhra Loyola College, Andhra Pradesh, India 5 Associate Professor, Department of Chemistry, Acharya Nagarjuna University, Andhra Pradesh, India Submitted July 6, 2022; Revised September 5, 2022; Accepted November 22, 2022Abstract The present study focuses on the preparation of silver/copper bimetallic hybrid nanoparticles by green method fromprecursor solutions of silver nitrate & copper nitrate and the locally available citrus fruit (lemon) peel extract whichbehaves as the stabilizing and reducing agent. Initially, the formation of hybrid nanoparticles was noticed in the reactionmixture by colour change. Here, UV-Visible spectroscopy is useful to examine the optical measurements of the preparednanoparticles and it exhibited the maximum absorption wavelength for lemon peel extract at 440 nm. Later, the functionalgroups present in the synthesized nanoparticles are investigated by FT-IR spectroscopy. In addition, the pure andcrystalline nature of developed nanoparticles was evaluated by XRD measurements. The spherical shape of producedbimetallic hybrid nanoparticles was observed by SEM analysis. The elemental composition of the synthesizednanoparticles was investigated by EDX analysis. Furthermore, electrochemical evaluation of synthesized nanoparticlesby usage of CV (cyclic voltammetry) exhibited that Ag@Cu bimetallic NPs were highly electroactive than otherelectrodes. Thus, this newly approached method is simple, rapid, inexpensive, and environmentally friendly and this greenmethod proves an alternative to physiochemical methods for the preparation of nanoparticles. Keywords. Ag@Cu alloy nanoparticles, green synthesis, cyclic voltammetry, lemon fruit extract.1. INTRODUCTION nanoparticle-based technologies attained greater opportunities for improving the efficiency,Development of nanoscience and nanotechnology sustainability, and speed of already-existing processes.needs a constant innovation and improvement in The traditional materials like transition metals are usednanomaterials. In recent years, nanoparticles are used in the preparation of nanoparticles. The lesser amountin worldwide research and it gives a best result in of the material used in the industrial catalysis andvarious applications especially electronic, nanoparticles-based technologies due to their highlypharmaceutical, environmental, sensors and energy reactive.[4-7] The conventional synthetic methods likeapplications due to their micro size, unique nature.[1-3] sol-gel processing, precipitation technique,Over the past several decades, researchers have been organometallic route, thermal and mechanochemicalfascinated to develop the various strategies for the methods have been used for the synthesis ofpreparation of nanoparticles. Nanotechnology nanoparticles. However, the existing chemicalproduced materials of various types at the nanoscale methods are expensive, harmful and highly reactive tolevel. Depending on the shape and size of the the environment due to the usage of toxic solvents asnanoparticles, many of the researchers found the reducing reagents, organic chemicals, and producenanoparticles affect the properties of physiochemical some by-products rather than the green syntheticsubstances e.g., the optical properties. In general, methods.[8-10] Therefore, in order to reduce the impact220 Wiley Online Library © 2023 Vietnam Academy of Scie ...