fulltext.study @t Gmail

New materials for photocatalytic degradation of Indigo Carmine—Synthesis, characterization and catalytic experiments of nanometric tin dioxide-based composites

Paper ID Volume ID Publish Year Pages File Format Full-Text
47447 46472 2010 5 PDF Available
Title
New materials for photocatalytic degradation of Indigo Carmine—Synthesis, characterization and catalytic experiments of nanometric tin dioxide-based composites
Abstract

Herein we describe experiments of photocatalytic degradation of Indigo Carmine dye, carried out by new composites containing nanometric SnO2 supported on Al2O3. The composites were prepared in a sequence of procedures which involved reactions of SnBuCl3, aluminium hydroxide with NH4OH in ethanol in order to impregnate organotin oxide in Al2O3 in different stoichiometry. Hence, the obtained materials were employed in experiments of thermal decomposition in O2 at different temperatures, yielding nanoparticles of SnO2 supported on Al2O3, with ratios of Sn/Al2O3 of 30% (1), 40% (2) and 60% (3) in weight, respectively. XRD experiments revealed diffraction patterns of SnO2, and those of Al2O3 were not observed due to their low crystallinity. 119Sn Mössbauer experiments suggested the formation of SnO2 in all experiments. Studies of scanning electron microscopies (SEM) showed the formation of tin(IV) oxide on the surface of Al2O3 in composites (1)–(3). The crystallite average size (D) was calculated employing Scherrer equation, revealing the presence of nanometric SnO2 in all samples. Photocatalytic degradation of Indigo Carmine in aqueous medium, induced by composites (1)–(3), was monitored by electronic spectroscopy, and composite (3) displayed the higher activity. In addition, results from electrospray ionization mass spectrometry (ESI-MS) and tandem mass spectrometry (ESI-MS/MS) allowed us to propose a degradation route for the dye.

Keywords
Pyrolysis; Organotin derivatives; Tin oxide; Photocatalysis; Environment contaminants
First Page Preview
New materials for photocatalytic degradation of Indigo Carmine—Synthesis, characterization and catalytic experiments of nanometric tin dioxide-based composites
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us
Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 96, Issues 1–2, 26 April 2010, Pages 67–71
Authors
, , , , ,
Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us