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The size-and shape-controlled synthesis of silver nanoparticles by solvothermal method
Authors: Nguyen Thi Ngoc Linh, Le The Tam, Ngo Thanh Dung, Le Thi Thanh Tam, Ha Minh Nguyet, Nguyen Dinh Vinh, Bui Minh Quy, Nguyen Thi Hong Hoa, Nguyen Hoa Du, Nguyen Trung Thanh, Le Trong Lu
291    2
Vietnam Journal of Science and Technology
: 61(2)     : 246-254
: doi:10.15625/2525-2518/16615; https://vjs.ac.vn/index.php/jst
: 1229_VJST2023-Size n shape controlled Ag - thermal method.pdf
Publishing year: 4/2023
In this work, Ag nanoparticles (NPs) were fabricated by the solvothermal method of silver nitrate in different organic solvents with the presence of sodium oleate (SOA) and 1- octadecanol (OCD-ol). The effects of different solvents and concentrations of OCD-ol on the morphology and properties of the Ag nanomaterials were investigated in detail. The products were characterized by using transmission electron microscopy (TEM), X-ray diffraction (XRD), and absorption spectroscopy. The results showed that the type of solvents significantly affected the size and uniformity of the synthesized particles as well as the synthesis efficiency. Among three solvents, toluene, 1,2-dichlorobenzene (DCB), and tetralin, DCB with a moderate boiling point (181 oC) is the most appropriate solvent for synthesizing Ag nanoparticles. The concentration of the reductant OCD-ol clearly affects the morphology and size of Ag NPs. The concentration of 137.5 mM was proper for obtaining spherical and uniform Ag nanoparticles. The XRD analysis showed that the synthesized nanoparticles had good crystallinity. The surface plasmon resonance (SPR) properties of the Ag NPs were also dependent on the fabrication condition. The obtained Ag nanoparticles show potential applications in biomedicine, catalysis, or electronics.
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