The extraction of gold nanoparticles from oat and wheat biomasses using sodium citrate and cetyltrimethylammonium bromide, studied by x-ray absorption spectroscopy, high-resolution transmission electron microscopy, and UV-visible spectroscopy.
Gold (Au) nanoparticles can be produced through the interaction of Au(III) ions with oat and wheat biomasses. This paper describes a procedure to recover gold nanoparticles from oat and wheat biomasses using cetyltrimethylammonium bromide or sodium citrate. Extracts were analyzed using UV-visible spectroscopy, high-resolution transmission electron microscopy (HRTEM), and x-ray absorption spectroscopy. The HRTEM data demonstrated that smaller nanoparticles are extracted first, followed by larger nanoparticles. In the fourth extraction, coating of chelating agents is visible on the extracted nanoparticles.
Department of Chemistry, University of Texas at El Paso, 500 West University Avenue, El Paso, TX 79968, USA.
Veronica
V
Armendariz
Jason G
JG
Parsons
Martha L
ML
Lopez
Jose R
JR
Peralta-Videa
Miguel
M
Jose-Yacaman
Jorge L
JL
Gardea-Torresdey
D018554:Avena / Q000737:chemistry*; D000077286:Cetrimonium; D002593:Cetrimonium Compounds / Q000737:chemistry*; D002951:Citrates / Q000737:chemistry*; D003460:Crystallization / Q000379:methods; D006046:Gold / Q000302:isolation & purification*; D046911:Macromolecular Substances / Q000737:chemistry; D008422:Materials Testing; D046529:Microscopy, Electron, Transmission; D008968:Molecular Conformation; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure; D036103:Nanotechnology / Q000379:methods; D010316:Particle Size; D010936:Plant Extracts / Q000302:isolation & purification*; D000077559:Sodium Citrate; D052616:Solid Phase Extraction / Q000379:methods; D013052:Spectrometry, X-Ray Emission; D013056:Spectrophotometry, Ultraviolet; D013499:Surface Properties; D014908:Triticum / Q000737:chemistry*
D002593:Cetrimonium Compounds; D002951:Citrates; D046911:Macromolecular Substances; D010936:Plant Extracts; D000077559:Sodium Citrate; D006046:Gold; D000077286:Cetrimonium