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- W2345223737 abstract "A facile, eco-friendly and inexpensive method to prepare Ag2S short nanorods and S-Ag nanocomposites using sublimed sulfur, AgNO3, PVP and PEG400 was studied. According to x-ray diffraction and scanning electron microscopy of the Ag2S, the products are highly crystalline and pure Ag2S nanorods with diameters of 70-160 nm and lengths of 200-360 nm. X-ray diffraction of the S-Ag nanocomposites shows that we obtained cubic Ag and S nanoparticles. Transmission electron microscopy shows that the molar ratio of PVP to Ag(+) plays an important role in controlling the size and morphology of the S-Ag nanocomposites. When the molar ratio of PVP to Ag(+) was 10:1, smaller sizes, better dispersibility and narrower distribution of S-Ag nanocomposites with diameters of 10-40 nm were obtained. The formation mechanism of the S-Ag nanocomposites was studied by designing a series of experiments using ultraviolet-visible measurement, and it was found that S nanoparticles are produced first and act as seed crystals; then Ag(+) becomes Ag nanocrystals on the surfaces of the S nanoparticles by the reduction of PVP. PEG400 acts as a catalyzer, accelerating the reaction rate, and protects the S-Ag nanocomposites from reacting to produce Ag2S. The antimicrobial experiments show that the S-Ag nanocomposites have greater antimicrobial activity on Staphylococcus aureus, Aspergillus niger and blue mold than Ag nanoparticles." @default.
- W2345223737 created "2016-06-24" @default.
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- W2345223737 date "2016-04-25" @default.
- W2345223737 modified "2023-09-25" @default.
- W2345223737 title "Facile synthesis of S–Ag nanocomposites and Ag<sub>2</sub>S short nanorods by the interaction of sulfur with AgNO<sub>3</sub>in PEG400" @default.
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- W2345223737 doi "https://doi.org/10.1088/0957-4484/27/22/225602" @default.
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