Structural and optical characteristics of silver/poly(N-vinyl-2-pyrrolidone) nanosystems synthesized by gamma-irradiation
Само за регистроване кориснике
2012
Аутори
Jovanović, ŽeljkaRadosavljević, Aleksandra
Šiljegović, Milorad
Bibić, Nataša M.
Mišković-Stanković, Vesna
Kačarević-Popović, Zorica M.
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
Silver nanoparticles (AgNPs) were synthesized in situ by gamma-irradiation using poly(N-vinyl-2-pyrrolidone) (PVP) as a capping agent. The concentration, molecular weight and the structure (crosslinked and interpenetrated network) of PVP were varied, in order to determine the influence of the capping agent in the radiolytic synthesis of the Ag/PVP nanosystems. Transmission electron microscopy (TEM) showed that AgNPs obtained from the solutions containing higher PVP concentration and higher molecular weight were spherical in shape, with narrow size distribution and a diameter of similar to 6 nm, while slightly larger rod-shaped silver agglomerates, with bimodal nanoparticle size distribution and diameters of similar to 10 nm and similar to 20 nm were obtained from the solutions containing lower PVP concentration and lower molecular weight. Strong plasmon coupling and extending of plasmon resonance was observed by UV-vis spectroscopy, as a result of formation of nanorod-like agglomerates.... Crosslinked and interpenetrated network did not affect the structure of synthesized AgNPs. Ag/PVP nanocomposite, in the form of thin film, was obtained by solvent evaporation from Ag/PVP colloid solution with 10 wt% of PVP, and characterized by FTIR spectroscopy. The interactions in Ag/PVP nanocomposite are shown to be the result of the coordination bonding between AgNPs and nitrogen from pyrrolidone ring of PVP. The optical properties of investigated Ag/PVP nanosystems, as measured by the values of optical band gap, E-g, are mainly the consequence of the interparticle distance as a result of the concentration and the structure of surrounding PVP macromolecules.
Кључне речи:
Silver nanoparticles / Poly(N-vinyl-2-pyrrolidone) / Optical properties / gamma-irradiationИзвор:
Radiation Physics and Chemistry, 2012, 81, 11, 1720-1728Издавач:
- Pergamon-Elsevier Science Ltd, Oxford
Финансирање / пројекти:
- International Atomic Energy Agency ViennaInternational Atomic Energy Agency [CRP: F23028, 15384]
- Синтеза, развој технологија добијања и примена наноструктурних мултифункционалних материјала дефинисаних својстава (RS-45019)
- Функционални, функционализовани и усавршени нано материјали (RS-45005)
DOI: 10.1016/j.radphyschem.2012.05.019
ISSN: 0969-806X
WoS: 000308118100009
Scopus: 2-s2.0-84864628316
Институција/група
Tehnološko-metalurški fakultetTY - JOUR AU - Jovanović, Željka AU - Radosavljević, Aleksandra AU - Šiljegović, Milorad AU - Bibić, Nataša M. AU - Mišković-Stanković, Vesna AU - Kačarević-Popović, Zorica M. PY - 2012 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2113 AB - Silver nanoparticles (AgNPs) were synthesized in situ by gamma-irradiation using poly(N-vinyl-2-pyrrolidone) (PVP) as a capping agent. The concentration, molecular weight and the structure (crosslinked and interpenetrated network) of PVP were varied, in order to determine the influence of the capping agent in the radiolytic synthesis of the Ag/PVP nanosystems. Transmission electron microscopy (TEM) showed that AgNPs obtained from the solutions containing higher PVP concentration and higher molecular weight were spherical in shape, with narrow size distribution and a diameter of similar to 6 nm, while slightly larger rod-shaped silver agglomerates, with bimodal nanoparticle size distribution and diameters of similar to 10 nm and similar to 20 nm were obtained from the solutions containing lower PVP concentration and lower molecular weight. Strong plasmon coupling and extending of plasmon resonance was observed by UV-vis spectroscopy, as a result of formation of nanorod-like agglomerates. Crosslinked and interpenetrated network did not affect the structure of synthesized AgNPs. Ag/PVP nanocomposite, in the form of thin film, was obtained by solvent evaporation from Ag/PVP colloid solution with 10 wt% of PVP, and characterized by FTIR spectroscopy. The interactions in Ag/PVP nanocomposite are shown to be the result of the coordination bonding between AgNPs and nitrogen from pyrrolidone ring of PVP. The optical properties of investigated Ag/PVP nanosystems, as measured by the values of optical band gap, E-g, are mainly the consequence of the interparticle distance as a result of the concentration and the structure of surrounding PVP macromolecules. PB - Pergamon-Elsevier Science Ltd, Oxford T2 - Radiation Physics and Chemistry T1 - Structural and optical characteristics of silver/poly(N-vinyl-2-pyrrolidone) nanosystems synthesized by gamma-irradiation EP - 1728 IS - 11 SP - 1720 VL - 81 DO - 10.1016/j.radphyschem.2012.05.019 ER -
@article{ author = "Jovanović, Željka and Radosavljević, Aleksandra and Šiljegović, Milorad and Bibić, Nataša M. and Mišković-Stanković, Vesna and Kačarević-Popović, Zorica M.", year = "2012", abstract = "Silver nanoparticles (AgNPs) were synthesized in situ by gamma-irradiation using poly(N-vinyl-2-pyrrolidone) (PVP) as a capping agent. The concentration, molecular weight and the structure (crosslinked and interpenetrated network) of PVP were varied, in order to determine the influence of the capping agent in the radiolytic synthesis of the Ag/PVP nanosystems. Transmission electron microscopy (TEM) showed that AgNPs obtained from the solutions containing higher PVP concentration and higher molecular weight were spherical in shape, with narrow size distribution and a diameter of similar to 6 nm, while slightly larger rod-shaped silver agglomerates, with bimodal nanoparticle size distribution and diameters of similar to 10 nm and similar to 20 nm were obtained from the solutions containing lower PVP concentration and lower molecular weight. Strong plasmon coupling and extending of plasmon resonance was observed by UV-vis spectroscopy, as a result of formation of nanorod-like agglomerates. Crosslinked and interpenetrated network did not affect the structure of synthesized AgNPs. Ag/PVP nanocomposite, in the form of thin film, was obtained by solvent evaporation from Ag/PVP colloid solution with 10 wt% of PVP, and characterized by FTIR spectroscopy. The interactions in Ag/PVP nanocomposite are shown to be the result of the coordination bonding between AgNPs and nitrogen from pyrrolidone ring of PVP. The optical properties of investigated Ag/PVP nanosystems, as measured by the values of optical band gap, E-g, are mainly the consequence of the interparticle distance as a result of the concentration and the structure of surrounding PVP macromolecules.", publisher = "Pergamon-Elsevier Science Ltd, Oxford", journal = "Radiation Physics and Chemistry", title = "Structural and optical characteristics of silver/poly(N-vinyl-2-pyrrolidone) nanosystems synthesized by gamma-irradiation", pages = "1728-1720", number = "11", volume = "81", doi = "10.1016/j.radphyschem.2012.05.019" }
Jovanović, Ž., Radosavljević, A., Šiljegović, M., Bibić, N. M., Mišković-Stanković, V.,& Kačarević-Popović, Z. M.. (2012). Structural and optical characteristics of silver/poly(N-vinyl-2-pyrrolidone) nanosystems synthesized by gamma-irradiation. in Radiation Physics and Chemistry Pergamon-Elsevier Science Ltd, Oxford., 81(11), 1720-1728. https://doi.org/10.1016/j.radphyschem.2012.05.019
Jovanović Ž, Radosavljević A, Šiljegović M, Bibić NM, Mišković-Stanković V, Kačarević-Popović ZM. Structural and optical characteristics of silver/poly(N-vinyl-2-pyrrolidone) nanosystems synthesized by gamma-irradiation. in Radiation Physics and Chemistry. 2012;81(11):1720-1728. doi:10.1016/j.radphyschem.2012.05.019 .
Jovanović, Željka, Radosavljević, Aleksandra, Šiljegović, Milorad, Bibić, Nataša M., Mišković-Stanković, Vesna, Kačarević-Popović, Zorica M., "Structural and optical characteristics of silver/poly(N-vinyl-2-pyrrolidone) nanosystems synthesized by gamma-irradiation" in Radiation Physics and Chemistry, 81, no. 11 (2012):1720-1728, https://doi.org/10.1016/j.radphyschem.2012.05.019 . .