Journal
CARBOHYDRATE POLYMERS
Volume 92, Issue 2, Pages 1896-1900Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2012.11.056
Keywords
Gold nanoparticles; Silver nanoparticles; Arabinoxylan; Green synthesis; Electron microscopy
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A green synthesis of highly stable gold and silver nanoparticles (NPs) using arabinoxylan (AX) from ispaghula (Plantago ovata) seed husk is being reported. The NPs were synthesized by stirring a mixture of AX and HAuCl4 center dot H2O or AgNO3, separately, below 100 degrees C for less than an hour, where AX worked as the reducing and the stabilizing agent. The synthesized NPs were characterized by surface plasmon resonance (SPR) spectroscopy, transmission electron microscopy (TEM), atomic force microscopy (AFM), and X-ray diffraction (XRD). The particle size was (silver: 5-20 nm and gold: 8-30 nm) found to be dependent on pH, temperature, reaction time and concentrations of AX and the metal salts used. The NPs were poly-dispersed with a narrow range. They were stable for more than two years time. (C) 2012 Elsevier Ltd. All rights reserved.
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