Synthesis and characterization of Fe(III)-silicate precipitation tubes

Parmar, Kavita and Pramanick, A K and Bandopadhyay, N R and Bhattacharjee, S (2010) Synthesis and characterization of Fe(III)-silicate precipitation tubes. Materials Research Bulletin, 45 (9). pp. 1283-1287.

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Fe(III)-silicate precipitation tubes synthesized through “silica garden” route have been characterized using a number of analytical techniques including X-ray diffraction, infrared spectroscopy, atomic force microscopy, scanning and transmission electron microscopy. These tubes are brittle and amorphous and are hierarchically built from smaller tubes of 5-10 nm diameters. They remain amorphous at least up to 650 °C. Crystobalite and hematite are the major phases present in Fe(III)-silicate tubes heated at 850 °C. Morphology and Chemical compositions at the external and internal walls of these tubes are remarkably different. These tubes are porous with high BET surface area of 291.2 m2/g. Fe(III)-silicate tubes contain significant amount of physically and chemically bound moisture. They show promise as an adsorbent for Pb(II), Zn(II), and Cr(III) in aqueous medium.

Item Type:Article
Official URL/DOI:
Uncontrolled Keywords:Amorphous materials; Chemical synthesis; Atomic force microscopy; Electron microscopy; X-ray diffraction
Divisions:Corrosion and Surface Engineering
ID Code:446
Deposited By:Sahu A K
Deposited On:13 May 2010 11:06
Last Modified:07 Feb 2012 14:52
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