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UV laser photodeposition of nanomagnetic soot from gaseous benzene and acetonitrile–benzene mixture

Paper ID Volume ID Publish Year Pages File Format Full-Text
28771 44090 2011 7 PDF Available
Title
UV laser photodeposition of nanomagnetic soot from gaseous benzene and acetonitrile–benzene mixture
Abstract

Megawatt KrF laser gas-phase photolysis of benzene and acetonitrile–benzene mixture was studied by using mass spectroscopy–gas-chromatography and Fourier transform infrared spectroscopy for analyses of volatile products, and by Fourier transform infrared, Raman and X-ray photoelectron spectroscopy, electron microscopy and magnetization measurements for analyses of solid products deposited from the gas-phase. The results are consistent with carbonization of benzene and decomposition of non-absorbing acetonitrile in carbonizing benzene through collisions with excited benzene and/or its fragments. The solid products from benzene and acetonitrile–benzene mixture have large surface area and are characterized as nanomagnetic amorphous carbonaceous soot containing unsaturated C centers prone to oxidation. The nanosoot from acetonitrile–benzene mixture incorporates CN groups, confirms reactions of benzene fragments with CN radical and has a potential for modification by reactions at the CN bonds.

► Megawatt KrF laser gas-phase photolysis of benzene in absence and presence of non-absorbing acetonitrile. ► Formation of volatile unsaturated hydrocarbons and CN-substituted hydrocarbons. ► Photodeposition of carbonaceous and CN-substituted carbonaceous soot. ► Amorphous soot with large surface area, C–H bonds and large fractions of sp2 carbons. ► Superficial oxidation of soot in atmosphere. ► Soot magnetic behaviour due to both paramagnetic and ferromagnetic contributions.

Keywords
Benzene; Acetonitrile; Laser photodeposition; Nanomagnetic soot; CN-substituted soot
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UV laser photodeposition of nanomagnetic soot from gaseous benzene and acetonitrile–benzene mixture
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 220, Issues 2–3, 20 May 2011, Pages 188–194
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
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Don't Miss Today's Special Offer
Price was $35.95
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Price after discount Only $4.95
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