4.7 Article

A rapid green synthesis of Ag/AgCl-NC photocatalyst for environmental applications

期刊

ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
卷 28, 期 4, 页码 3972-3982

出版社

SPRINGER HEIDELBERG
DOI: 10.1007/s11356-020-11834-5

关键词

Green synthesis; Azadirachta indica; Nanomaterials; Antibacterial activity; Dye degradation

资金

  1. All India Council for Technical Education, Ministry of Human Resource Development, Govt. of India under Research Promotion Scheme (RPS) [8-86/RIFD/RPS/POLICY-1/2016-17]

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This study focuses on the synthesis and analysis of Ag nanoparticles and nanocomposites mediated by Azadirachta indica plant fruit extract for their photocatalytic, antibacterial, and dye degradation activities. The green-synthesized Ag/AgCl nanocomposites showed enhanced photocatalytic and antibacterial activities, indicating potential applications in various sectors. It may become a hot research topic in environmental applications in the near future.
The present study focuses on extract-mediated Ag nanoparticles (NPs), AgCl-NPs, and Ag/AgCl nanocomposites (NCs) as photocatalysts along with its antimicrobial and dye degradation activities. The synthesis of these NPs and NCs was performed by using Azadirachta indica plant fruit extract and analyzed using UV-Vis spectroscopy to confirm the synthesis and band gap of these NPs and NCs, X-ray diffraction (XRD) to determine its size and crystalline nature. Fourier transform infrared spectroscopy (FTIR) to discern phytochemicals, responsible for the reduction and capping of the synthesized NCs. Scanning electron microscopy analysis (SEM), transmission electron microscopy analysis (TEM), and energy dispersive X-ray (EDX) spectroscopy analysis were performed to validate the morphology and presence of silver and chloride percentage in the composites. Later, these NPs and NCs were used for their potential role in photocatalytic degradation of methylene blue dye and antibacterial activity against Escherichia coli and Staphylococcus aureus of human pathogen. The prepared Ag/AgCl-NCs exhibited an enhanced photocatalytic and antibacterial activities in comparison with pure Ag and AgCl nanomaterials. However, green-synthesized NPs and NCs played dual roles as a photocatalyst and antibacterial agent in various biomedical and industrial sectors. Moreover, we found that it might be a hot research in many other environmental applications in upcoming days.

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