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Abstract
Abstract Plant-based materials are reported to have a wide range of applications in the environmental and biomedical sectors. In this report, we present an economic and environmentally friendly supported turmeric powder (TP) biomass for the support of Ag, Ni and Cu nanoparticles (NPs) designated as Ag@TP, Ni@TP and Cu@TP. The in situ syntheses of the stated NPs were achieved in aqueous medium using NaBH4 as a reducing agent. The prepared NPs were applied for the degradation of o-nitrophenol (ONP), m-nitrophenol (MNP), p-nitrophenol (PNP), methyl orange (MO), Congo red (CR), rhodamine B (RB) and methylene blue (MB). Initially, Ag@TP, Ni@TP and Cu@TP were screened for the MO dye and antibacterial activity, where Ag@TP displayed the strongest catalytic activity for MO and bactericidal activities as compared to Ni@TP and Cu@TP. The quantity of metal ions adsorbed onto the TP was investigated by atomic absorption spectroscopy. The Ag@TP, Ni@TP and Cu@TP were characterized through X-ray diffraction (XRD), attenuated total reflectance-Fourier transform infrared (ATR-FTIR) spectroscopy, thermal gravimetric analysis (TGA), energy-dispersive X-ray spectroscopy (EDS) and field emission scanning electron microscope (FESEM) analysis.
Highlights
Nanoparticles (NPs) have diverse applications in drug delivery, environmental pollution control, energy, water purification and biological applications such as antibacterial, anticancer and antioxidant activities [1]
The decreases in metal ion concentrations from their solution were calculated by comparison with their corresponding stock solution using Eq (1): Percent metal ions uptake where Cs is the concentration of metal ions and Ct is the residual metal ions concentration after 5 h of treatment with turmeric powder (TP)
In the present study we report the facile and green synthesis of Ag, Ni and Cu NPs supported on the pure TP
Summary
Nanoparticles (NPs) have diverse applications in drug delivery, environmental pollution control, energy, water purification and biological applications such as antibacterial, anticancer and antioxidant activities [1]. Various practices have been developed for the synthesis of NPs, such as physical, chemical and mechanical, most of these methods are toxic, costly, and non-ecofriendly. These methods have many other disadvantages, such as being expensive, hazard exposure like genotoxicity, carcinogenicity and cytotoxicity [2]. Khan et al.: Nanocatalysis for environmental remediation due to their high surface area to volume ratio, they are rapidly aggregated and precipitated, which largely diminishes their catalytic activities To manage this situation, NPs are supported on various supported materials to avoid aggregation and precipitation [5, 6]. Recently much attention has been paid to the plantbased supported materials [10,11,12]
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