Abstract
In this report an expeditious, manageable and uncomplicated advancement has been demonstrated in the field of nanoparticles for sensing dithiocarbamates (DTCs) Ziram, Zineb, and Maneb pesticides in environment and juice samples using cetyltrimethyl ammonium bromide (CTAB)-capped copper nanoparticles (CTAB-Cups) as colorimetric probe. The probe was prepared in aqueous solvent using CTAB and hydrazine monohydrate. Localized surface plasmon resonance band of the prepared sensor was scanned by UV–visible spectrophotometer. Further Fourier-transform infrared spectroscopy (FTIR), scanning electron microscopy, energy-dispersive X-ray spectroscopy (EDX), zeta potential and dynamic light scattering (DLS) techniques were employed to reveal the interaction, functionality, surface characteristics and particle size. Probe was used competently for colorimetric sensing of Ziram, Zineb, and Maneb belonging to the DTCs group of pesticides. Sudden change in color from reddish wine to yellow was noted visibly and monitored on spectrophotometer, FTIR, EDX, zeta potential and DLS. The probe indicated very susceptible and selective colorimetric detection of DTCs within the range of 97.9–489.3 ng/ml, 8.8–44.1 ng/ml and 8.4–42.4 ng/ml for Ziram, Zineb and Maneb. The designed method yielded very rapid and organized procedure for detection of DTCs with minimal sample preparations. The method was used for the analysis of DTCs spiked tap water, tomato extract, mango juice, and recoveries of DTCs were obtained within 95.8–108.5% with relative standard deviation within 0.14–1.11%.
Highlights
The distinctive optical properties of the noble metallic nanoparticles (Au, Ag, and Cu) have made them an irresistible prospect in miscellaneous applications, comprising of biotechnology, electronics, optical devices, sensors, catalyses [1] as well as in pharmaceuticals [2,3,4,5] and in textile [6]
Copper nanoparticles were prepared by wet chemical reduction method, where cetyltrimethyl ammonium bromide was used to protect the exterior of CuNPs and hydrazine monohydrate was used as reducing agent
The prepared CuNPs were characterized by UV–visible spectroscopy, Fourier-transform infrared spectroscopy (FTIR), SEM, and energy-dispersive X-ray spectroscopy (EDX) techniques
Summary
The distinctive optical properties of the noble metallic nanoparticles (Au, Ag, and Cu) have made them an irresistible prospect in miscellaneous applications, comprising of biotechnology, electronics, optical devices, sensors, catalyses [1] as well as in pharmaceuticals [2,3,4,5] and in textile [6]. Due to wide applications of noble metal nanoparticles, numbers of methods have been developed to synthesize NPs with variation in shape, size and topography [7]. Copper is gaining application in the fields of medicines, optics, electronics, antimicrobial, nanofluids, efficient catalyst in production of lubricants and conductive In this regard various methods have been established to synthesize CuNPs by alternating the suitable parameters and under inert atmosphere [17, 18]
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