Pregled bibliografske jedinice broj: 708593
The synthesis of gold nanoparticles by a citrate-radiolytical method
The synthesis of gold nanoparticles by a citrate-radiolytical method // Radiation physics and chemistry, 106 (2015), 77-82 doi:10.1016/j.radphyschem.2014.07.006 (međunarodna recenzija, članak, znanstveni)
CROSBI ID: 708593 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
The synthesis of gold nanoparticles by a citrate-radiolytical method
Autori
Hanžić, Nikolina ; Jurkin, Tanja ; Maksimović, Aleksandar ; Gotić, Marijan
Izvornik
Radiation physics and chemistry (0969-806X) 106
(2015);
77-82
Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni
Ključne riječi
gold; nanoparticles; citrate; gamma-irradiation; radiolytical synthesis; colloid
Sažetak
The classical citrate method is based on the reduction of an Au(III) precursor with sodium citrate in an aqueous solution near the boiling point. In this work gold nanoparticles (GNPs) were synthesised via a citrate method using reduction by gamma-irradiation at room temperature. The Au(III)–citrate aqueous precursor solution was gamma-irradiated to doses of up to 30 kGy. The dose rate of gamma-irradiation was around 8 kGy h-1. The GNP size was controlled by the adsorbed dose as well as by different saturated gases (air or nitrogen) present in precursor solutions. The results showed that gamma-irradiation produced smaller GNPs in the presence of precursor solutions saturated with nitrogen compared with the ones saturated with air. By increasing both the gold(III) and citrate concentrations in precursor solutions, stable and highly concentrated colloidal gold/citrate suspensions were synthesised using classical and citrate radiolytical reduction methods. Gamma-irradiation thus produced well-dispersed and highly concentrated GNPs in an aqueous citrate solution in the presence of dissolved oxygen and without adding any reducing or stabilising agents. Radiolytically intensified citrate oxidation and decarboxylation to acetone and other products by dissolved oxygen was advantageous for Au(III) reduction and subsequent formation of gold nanoparticles. Since the completely same precursor solutions were used both in the classical and citrate-radiolytical reduction methods, a real comparison of GNP sizes between these two methods was given.
Izvorni jezik
Engleski
Znanstvena područja
Kemija
POVEZANOST RADA
Projekti:
098-0982904-2952 - Sinteza i mikrostruktura metalnih oksida i oksidnih stakala (Ristić, Mira, MZOS ) ( CroRIS)
098-0982904-2955 - Odnosi struktura-svojstvo modificiranih polimernih materijala (Pucić, Irina, MZOS ) ( CroRIS)
Ustanove:
Institut "Ruđer Bošković", Zagreb
Citiraj ovu publikaciju:
Časopis indeksira:
- Current Contents Connect (CCC)
- Web of Science Core Collection (WoSCC)
- Science Citation Index Expanded (SCI-EXP)
- SCI-EXP, SSCI i/ili A&HCI
- Scopus