Abstract
Different morphologies of Ag2Te nanostructures were synthesized using TeCl4 as a new precursor and hydrazine hydrate as reducing agent by a hydrothermal method. Various parameters that affect on morphology and purity of nanostructures were optimized. According to our experiments the best time and temperature for preparation of this nanostructure are 12 h and 120 °C. The photo-catalytic behaviour of nanostructures in presence of UV- visible light for degradation of methyl orange was investigated. Results show that the presence of UV light is necessary for an efficient degradation of dye in aqueous solution. On the other hand, as observations propose the Ag2Te reveal a strong photoluminescence peak at room temperature that could be attributed to high level transition in the semiconductor. Nanostructures were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared (FT-IR) techniques and UV–visible scanning spectrometer (UV-Vis).
Highlights
Sensors[19,20,21,22,23]
A lot of attention focused on new type nano-devices based on Ag2Te nanostructures which are very importance because of their behavior that are differed from corresponding polycrystalline bulk in mechanical, electrical and magnetic properties[24,25,26]
Precipitates were formed from spherical particles with average 250–300 nm diameter
Summary
In presence of CTAB as a cationic surfactant (Fig. 7a,b), the morphology of product in different mole ratios were constant but the size of nanostructures were changed. In these reactions the pair of electron and hole played main rule According to this result, Ag2Te can introduce as an effective photo-catalytic agent in aqueous solution for degradation of organic pollution in presence of UV-light.
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