Surface and Structural Properties of Gold Nanoparticles and Their Biofunctionalized Derivatives in Aqueous Electrolytes Solution

Edit Csapó, Dániel Sebok, Julia Makrai Babić, Filip Šupljika, Gabriella Bohus, I. Dékány, Nikola Kallay, Tajana Preočanin

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Gold nanoparticles reduced by sodium citrate (d ∼ 10 nm) and purchased gold colloid particles (d ∼ 500 nm) were examined and compared. The properties of both gold particles and their biofunctionalized derivatives with L-cysteine and L-glutathione were studied in the presence of sodium nitrate. The structural investigations indicated an aggregated inner structure. The isoelectric points of pure gold, citrate reduced gold, and functionalized gold were measured and compared. The low isoelectric point of pure gold/water interface was explained by considering the distribution and accumulation of H+ and OH- ions within the interfacial water layer, being more pronounced for OH- ions.

Original languageEnglish
Pages (from-to)815-825
Number of pages11
JournalJournal of Dispersion Science and Technology
Volume35
Issue number6
DOIs
Publication statusPublished - 2014

Fingerprint

Gold
surface properties
Electrolytes
Surface properties
Structural properties
electrolytes
gold
Nanoparticles
Derivatives
nanoparticles
citrates
Ions
Gold Colloid
Sodium
Water
sodium nitrates
glutathione
Citric Acid
cysteine
Glutathione

Keywords

  • Gold nanoparticles
  • inner structure
  • isoelectric point
  • surface properties

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Polymers and Plastics
  • Surfaces, Coatings and Films

Cite this

Surface and Structural Properties of Gold Nanoparticles and Their Biofunctionalized Derivatives in Aqueous Electrolytes Solution. / Csapó, Edit; Sebok, Dániel; Makrai Babić, Julia; Šupljika, Filip; Bohus, Gabriella; Dékány, I.; Kallay, Nikola; Preočanin, Tajana.

In: Journal of Dispersion Science and Technology, Vol. 35, No. 6, 2014, p. 815-825.

Research output: Contribution to journalArticle

Csapó, Edit ; Sebok, Dániel ; Makrai Babić, Julia ; Šupljika, Filip ; Bohus, Gabriella ; Dékány, I. ; Kallay, Nikola ; Preočanin, Tajana. / Surface and Structural Properties of Gold Nanoparticles and Their Biofunctionalized Derivatives in Aqueous Electrolytes Solution. In: Journal of Dispersion Science and Technology. 2014 ; Vol. 35, No. 6. pp. 815-825.
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