Abstract
Silica from corn cob ash (CCA) was extracted via sol-gel, and nanostructured with templating concept, these resulted in silica nanoparticle. Silica and mineral contents of CCA were determined by X-ray fluorescence (XRF). X-ray diffraction (XRD) patterns revealed amorphous nature of extracted silica. Fourier transform infrared (FTIR) data indicated the presence of siloxane and silanol groups. X-ray diffraction (XRD) of nanostrurtured silica reviled average particle size of 54 nm, Scanning electron microscopy/energy dispersive X-ray spectroscopy (SEM/EDS) study indicates the particles to possess disorder morphology with the particle attached to each other through grain boundary to form agglomerated structure, and SEM analysis shows that particle size varies from 44 nm - 98 nm in diameter, with an average diameter of 55nm. EDS spectrum confirms SiO2.
Highlights
IntroductionSilica has been successfully extracted from different agricultural materials like rice husk [1]-[4], sugar cane Bagasse [5] [6], coffee husk [7], wheat husk [8] and corn cob [9] [10]
Silica has been successfully extracted from different agricultural materials like rice husk [1]-[4], sugar cane Bagasse [5] [6], coffee husk [7], wheat husk [8] and corn cob [9] [10].One of the most important techniques used to prepare nanosilica is the sol-gel process
The corn cod ash, extracted and nano silica was subjected to X-ray diffraction (XRD), X-ray fluorescence (XRF), Fourier transform infrared (FTIR) and SEM
Summary
Silica has been successfully extracted from different agricultural materials like rice husk [1]-[4], sugar cane Bagasse [5] [6], coffee husk [7], wheat husk [8] and corn cob [9] [10]. One of the most important techniques used to prepare nanosilica is the sol-gel process. Nanofillers synthesised using this method are reported to have a distinct spherical shape with a narrow size distribution that is useful for dental applications [11] [12]. (2016) Development of Silica Nanoparticle from Corn Cob Ash. Advances in Nanoparticles, 5, 135-139. Spherically shaped nanosilica particles provide superior polishability [13] and tend to distribute mechanical stress more uniformly than irregularly shaped particles, which lead to improved mechanical properties [14]
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