From Complex Inorganic Oxides to Ag–Bi Nanoalloy: Synthesis by Femtosecond Laser Irradiation
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Other documents of the author: Machado, Thales Rafael; Guerra Macedo, Nadia; Assis, Marcelo de; Doñate-Buendía, Carlos; Mínguez-Vega, Gladys; Teixeira, Mayara Mondego; Foggi, Camila Cristina; Vergani, Carlos; Beltrán Mir, Héctor; Andres, Juan; Cordoncillo, Eloisa; Longo, Elson
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Show full item recordcomunitat-uji-handle:10234/9
comunitat-uji-handle2:10234/43662
comunitat-uji-handle3:10234/43643
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INVESTIGACIONMetadata
Title
From Complex Inorganic Oxides to Ag–Bi Nanoalloy: Synthesis by Femtosecond Laser IrradiationAuthor (s)
Date
2018-08-24Publisher
American Chemical SocietyISSN
2470-1343Bibliographic citation
MACHADO, Thales R., et al. From Complex Inorganic Oxides to Ag–Bi Nanoalloy: Synthesis by Femtosecond Laser Irradiation. ACS Omega, 2018, vol. 3, no 8, p. 9880-9887Type
info:eu-repo/semantics/articlePublisher version
https://pubs.acs.org/doi/abs/10.1021/acsomega.8b01264Version
info:eu-repo/semantics/publishedVersionSubject
Abstract
Bimetallic nanoalloys with a wide variety of
structures and compositions have been fabricated through many diverse techniques. Generally, various steps and chemicals are involved in their fabrication. In this study, ... [+]
Bimetallic nanoalloys with a wide variety of
structures and compositions have been fabricated through many diverse techniques. Generally, various steps and chemicals are involved in their fabrication. In this study, the synthesis of Ag−Bi nanoalloys by femtosecond laser irradiation of an inorganic oxide Ag2WO4/NaBiO3 target without any chemicals like reducing agents or solvent is presented. The interaction between these materials and the
ultrashort pulse of light allows the migration of Ag and Bi atoms from the crystal lattice to the particles surfaces and then to the plasma plume, where the reduction of the positively charged Ag and Bi species in their respective metallic species takes place. Subsequently, the controlled nucleation and growth of the Ag−Bi alloyed nanoparticles occurs in situ during the irradiation process in air. Although at the bulk level, these elements are highly immiscible, it was experimentally demonstrated that at nanoscale, the Ag−Bi nanoalloy can assume a randomly mixed
structure with up to 6 ± 1 atom % of Bi solubilized into the face-centered cubic structure of Ag. Furthermore, the Ag−Bi binary system possesses high antibacterial activity against Staphylococcus aureus (methicillin-resistant and methicilin-susceptible), which is interesting for potential antimicrobial applications, consequently increasing their range of applicability. The present results
provide potential insights into the structures formed by the Ag−Bi systems at the nanoscale and reveal a new processing method where complex inorganic oxides can be used as precursors for the controlled synthesis of alloyed bimetallic nanoparticles. [-]
Investigation project
The authors are grateful to CAPES/PNPD, CEPID-FAPESP (2013/07296-2), FAPESP (2017/12594-3), CNPq (150205/2017-1), Ministerio de Economia y Competitividad (MAT2016-80410-P, FIS2016-75618-R and CTQ2015-65207-P), Universitat Jaume I (UJI-B2016-38 and UJIB2016-25), Generalitat Valenciana (PROMETEU/2016/079 and ACOMP/2015/1202) for the financial support. The authors are also very grateful to the Serveis Centrals d'Instrumentacio Cientifica (SCIC) of the University Jaume I for the use of the femtosecond laser and microscopy facilities. Special thanks go to Dr. Said Agouram, Rorivaldo Camargo, and Joao P.C. Costa for their scientific and technical support. The authors also thank Enio Longo for design contributions.Rights
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