Optical properties of silver, silver sulfide and silver selenide nanoparticles and antibacterial applications

Journal Article · Thu Mar 15 04:00:00 EDT 2018 · Materials Research Bulletin

DOI:https://doi.org/10.1016/J.MATERRESBULL.2017.11.015· OSTI ID:22805447

Delgado-Beleño, Y.; Martinez-Nuñez, C. E. ^[1]; Flores-López, N. S.; Flores-Acosta, M. ^[1]

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1. Departamento de Investigación en Física, Universidad de Sonora, Apdo. Postal 5-88, 83190, Hermosillo, Sonora (Mexico)

Highlights: • Ag small nanoparticles synthesis in zeolite A4. • SERS effect in Ag small nanoparticles. • Bactericidal properties in Ag{sub 2}Se and Ag{sub 2}S semiconductor nanoparticles. - Abstract: This work presents the optical properties and antibacterial activity of silver nanoparticles (AgNPs) and their semiconductors from S and Se (Ag{sub 2}S and Ag{sub 2}Se nanoparticles). The nanoparticles were synthesized and stabilized in the matrix of the synthetic zeolite A4. Both compounds Ag{sub 2}S and Ag{sub 2}Se nanoparticles show a size of around 9 nm and quasi-spherical morphology. The interplanar distances calculated in the TEM images confirm the presence of metallic and semiconductor nanoparticles with hexagonal, monoclinic and orthorhombic structures for nanoparticles Ag, Ag{sub 2}S and Ag{sub 2}Se, respectively. The Surface plasmon resonance for AgNPs was obtained around 415 nm. Furthermore, in nanoparticles Ag{sub 2}S and Ag{sub 2}Se we identified absorptions bands in the visible region with maxima around 330 and 375 nm. The presence of SERS effect caused by metallic nanoparticles on the surface of the zeolite was observed. The antibacterial activity of the nanoparticles stabilized in the zeolite was analyzed against gram-negative bacteria and gram-positive bacteria.

• OSTI ID: 22805447
• Journal Information: Materials Research Bulletin, Journal Name: Materials Research Bulletin Vol. 99; ISSN MRBUAC; ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
ANTIMICROBIAL AGENTS
MONOCLINIC LATTICES
NANOPARTICLES
OPTICAL PROPERTIES
ORTHORHOMBIC LATTICES
PLASMONS
SEMICONDUCTOR MATERIALS
SILVER
SILVER SELENIDES
SILVER SULFIDES
SYNTHESIS
TRANSMISSION ELECTRON MICROSCOPY
ZEOLITES