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Sulfur Nanoparticles Synthesis and Characterization from H2S Gas, Using Novel Biodegradable Iron Chelates in Aqueous Surfactant Systems

Published online by Cambridge University Press:  01 February 2011

Aniruddha Subhash Deshpande ,
Ramdas B. Khomane ,
Bhalchandra K. Vaidya ,
Renuka M. Joshi ,
Arti S. Harle  and
Bhaskar D. Kulkarni
Aniruddha Subhash Deshpande
Affiliation:
aniruddhadesh@rediffmail.com, National Chemical Labrotary, Chemical Engineering and Process Development Division, Dr. Homi Bhabha Road,, Pashan,, Pune, 411008, India, +91-20-25902157, +91-20-25902612
Ramdas B. Khomane
Affiliation:
aniruddhadesh@rediffmail.com, National Chemical Labrotary, Chemical Engineering and Process Development Division, Dr. Homi Bhabha Road, Pashan,, Pune,, 411008,, India
Bhalchandra K. Vaidya
Affiliation:
aniruddhadesh@rediffmail.com, National Chemical Labrotary, Chemical Engineering and Process Development Division, Dr. Homi Bhabha Road, Pashan,, Pune,, 411008,, India
Renuka M. Joshi
Affiliation:
rm.joshi@ncl.res.in, National Chemical Labrotary, Chemical Engineering and Process Development Division, Dr. Homi Bhabha Road, Pashan,, Pune,, 411008,, India
Arti S. Harle
Affiliation:
as.harle@ncl.res.in, National Chemical Labrotary, Center for Material Characterization Division, Dr. Homi Bhabha Road, Pashan,, Pune,, 411008,, India
Bhaskar D. Kulkarni
Affiliation:
bd.kulkarni@ncl.res.in, National Chemical Labrotary, Chemical Engineering and Process Development Division, Dr. Homi Bhabha Road, Pashan,, Pune,, 411008,, India
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Abstract

Sulfur nanoparticles were synthesized from hazardous H2S gas by desulfurization based on liquid redox process [1]. The use of novel biodegradable iron chelates, in particular, FeCl3-malic acid chelate system has been extensively studied in various aqueous surfactant systems of Tween 80, SDS, CTAB for catalytic oxidation of H2S gas at ambient conditions of temperature, pressure and neutral pH. The structural features of sulfur nanoparticles have been characterized by XRD, TEM, and DLS measurements. XRD analysis indicates the presence of Metal-sulfur (JCPDS-08247). TEM analysis shows that the morphology of sulfur nanoparticles synthesized in aqueous surfactant system of Tween 80 is nearly uniform in size of 12nm average particle size, in SDS surfactant system shows 15nm average particle size, where as sulfur nanoparticles synthesized in CTAB shows average particle size of 7nm. The DLS result shows the mono-dispersity of the sulfur nanoparticles in the aqueous surfactant systems. The described process serves mainly two objectives; (a) waste utilization for preparation of commercially important nano-sulfur product and (b) reduction in environmental pollution. 1. G. Nagal, Chem. Eng. 104, 125 (1997).

Keywords

environmentally benignnanostructureorganometallic
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1103: Symposium MM – Health and Environmental Impacts of Nanoscale Materials–Safety by Design , 2008 , 1103-MM01-03
Copyright
Copyright © Materials Research Society 2008

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