Abstract
Silver nanowires (AgNWs) have been synthesized by polyol process through different mediated agents (CuCl2and NaCl). The presence of cations and anions (Cu(II), Na+, and Cl−) has been shown to have a strong impact on the shape of silver nanostructures. The field emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM) show uniform nanowires. The UV-vis spectra show that plasmon peak indicated the formation of nanowires. The X-ray diffraction (XRD) pattern displayed that final product was highly crystallized and pure. The growth mechanism of AgNWs was proposed.
Highlights
One-dimensional (1-D) metal nanostructures such as nanowires have attracted extensive attention due to their unique magnetic, optical, and electronic properties compared to zero-dimensional (0-D) nanostructures [1,2,3,4,5,6]
AgNWs were synthesized through reducing silver nitrate (AgNO3) with 1,2-propanediol (Sample 1) and ethylene glycol (EG) (Samples 2 and 3) in the presence of polyvinylpyrrolidone (PVP) as the surfactant which can direct the growth of AgNWs and protect them from aggregation
1,2-propanediol was converted to propionaldehyde at high temperature (170∘C) as shown in (1)
Summary
One-dimensional (1-D) metal nanostructures such as nanowires have attracted extensive attention due to their unique magnetic, optical, and electronic properties compared to zero-dimensional (0-D) nanostructures [1,2,3,4,5,6]. Various methods had been used to synthesize AgNWs such as polyol process [12,13,14], wet chemical synthesis [15, 16], hydrothermal method [17, 18], and ultraviolet irradiation photoreduction techniques [19, 20]. AgNWs were synthesized through reducing silver nitrate (AgNO3) with 1,2-propanediol (Sample 1) and ethylene glycol (EG) (Samples 2 and 3) in the presence of polyvinylpyrrolidone (PVP) as the surfactant which can direct the growth of AgNWs and protect them from aggregation. We believe Cu(II), Na+, and Cl− ions are necessary for AgNWs production
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