Bergenia ciliate-Mediated Mixed-Phase Synthesis and Characterization of Silver-Copper Oxide Nanocomposite for Environmental and Biological Applications.

Fazal Ur Rehman,Sirajul Haq,Humma Afsar,Rashid Mahmood,Manel Ben Ali,Amor Hedfi,Mohammed Almalki,Amine Mezni,Wajid Rehman

doi:10.3390/ma14206085

Abstract

Bergenia ciliate (B. ciliate) leaf extract was used as a reducing and stabilizing agent for the synthesis of silver-copper oxide nanocomposite (Ag-CuO NC). Scanning and transmission electron microscopies (SEM and TEM) were used to examine the structural morphology, and the average particle size was determined to be 47.65 nm. The phase confirmation and crystalline structure were examined through the X-ray diffraction (XRD) technique, where cubic and monoclinic geometries were assigned to Ag and CuO. The energy dispersive X-ray (EDX), Fourier transform infrared (FTIR) and ultra-violet and visible (UV-Visible) spectroscopies were operated to analyse the elemental composition, functional groups and light absorption phenomena of the Ag-CuO NC. Under the full light spectrum, the photodegradation of Rhodamine 6G was recorded, and 99.42 percent of the dye degraded in 80 min. The Agar well diffusion method was followed to perform antibacterial activity against selected pathogens, and the activity was found to increase with increasing concentration of Ag-CuO NC. The ABTS free radical scavenging activity suggests that the activity of Ag-CuO NC is higher than ascorbic acid.

Highlights

Organic dyes are extensively utilized in photo-electrochemical cells, light-harvesting arrays, agricultural research, the medical field, food technology, paper production, and the leather and textile industries and are released into the aquatic environment
Biofilm production is an another problem caused by microorganisms; it leads to bacterial resistance to desiccation and starvation conditions [2,3]
The results shows that the activity of Ag-CuO NC against both microorganism was gradually increased by increasing sample concentration on the well, which may be due to the larger of Ag-CuO particles accumulate on the bacterial surface and penetrate inside the cell

Summary

Introduction

Organic dyes are extensively utilized in photo-electrochemical cells, light-harvesting arrays, agricultural research, the medical field, food technology, paper production, and the leather and textile industries and are released into the aquatic environment. Due to toxicity and stability, these dyes cause serious health problems and environmental pollution [1]. Multi-drug resistant microbes in parasites, viruses, fungi, and bacteria are increasing microbial infections. By applying several techniques, such as type IV secretion systems, multidrug efflux pumps, transposons, integrons, and R plasmids, bacteria can resist antibiotic agents. Biofilm production is an another problem caused by microorganisms; it leads to bacterial resistance to desiccation and starvation conditions [2,3]. Environmental pollution and microbial contamination are significant problems that generate widespread concern. An efficient and reliable solution is required to protect aquatic and terrestrial life

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Conclusion