Thermally induced variation in redox chemical bonding structures of single-walled carbon nanotubes exposed to hydrazine vapor

NCUIR > Engineering College > Energy of Mechatronics > journal & Dissertation > Item 987654321/105018

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Title:	Thermally induced variation in redox chemical bonding structures of single-walled carbon nanotubes exposed to hydrazine vapor
Authors:	蘇清源;Wang, Pen-Cheng;Liao, Yu-Chun;Lai, Yu-Ling;Lin, Ying-Chang;Su, Ching-Yuan;Tsai, Chuen-Horng;Hsu, Yao-Jane
Contributors:	工學院能源工程研究所
Keywords:	air;annealing;Bonding;Carbon;carbon nanotubes;chemical bonding;chemical speciation;Chemistry;Cross-disciplinary physics: materials science;rheology;Cycloaddition;desorption;Exact sciences and technology;Fullerenes and related materials;diamonds, graphite;General and physical chemistry;hydrazine;Hydrazines;hydrogen peroxide;Materials science;Networks;oxidation;oxygen;Photoelectron spectroscopy;Physics;Raman spectroscopy;scanning electron microscopy;Single wall carbon nanotubes;Specific materials;Surface physical chemistry;thermal degradation;vapors;X-ray photoelectron spectroscopy
Date:	2012-04-01
Issue Date:	2026-04-23 12:03:55 (UTC+8)
Publisher:	Elsevier Ltd.;Kidlington: Elsevier Ltd
Abstract:	摘要： The effect of hydrazine (N 2H 4) vapor on the properties of single-walled carbon nanotube (SWCNT) networks was investigated by sheet resistance measurement, scanning electron microscopy, Raman spectroscopy, ultraviolet photoelectron spectroscopy and X-ray photoelectron spectroscopy (XPS). Our results show that, even after an auxiliary thermal desorption treatment at 80 °C, the n-doping effect on our SWCNTs caused by N 2H 4 vapor still persistently remained. Further analysis on the XPS data suggests that a reactive chemical species, nitrene (NH), generated during thermal decomposition of N 2H 4, could react with SWCNTs by cycloaddition to form cyclic nitrogen-containing aziridine structures on SWCNTs. Our results also show that the formed nitrogen-containing bonding structures were thermally metastable and could be significantly eliminated upon further annealing at 350 °C. Moreover, it was found that the N 2H 4 vapor treatment could introduce nitroso groups and carbonyl groups, but not carboxyl groups, to our pristine SWCNTs. The mild oxidation could be attributed to the HNO 2 and H 2O 2 produced from the reactions of NH and N 2H 4 with oxygen, respectively, when a N 2H 4 treatment was performed in air. 出版者： Kidlington: Elsevier Ltd 出版日期： 2012-04-01 出處： Carbon (New York), 2012-04, Vol.50 (4), p.1650-1658 資源來源： Elsevier ScienceDirect Journals Complete 版權： 2011 Elsevier Ltd 版權： 2015 INIST-CNRS 識別號： ISSN: 0008-6223 識別號： EISSN: 1873-3891 識別號： DOI: 10.1016/j.carbon.2011.12.003 識別號： CODEN: CRBNAH
Appears in Collections:	[Energy of Mechatronics] journal & Dissertation

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