000			02124nam a22002657a 4500
003			ZW-GwMSU
005			20250319082034.0
008			250319b |||||||| |||| 00| 0 eng d
022			_a09743626
040			_aMSU _bEnglish _cMSU _erda
050	0	0	_aQD31 JOU
100	1		_aMugadza, Tawanda _eauthor
245	1	0	_aSynthesis of single-walled carbon nanotubes by the pyrolysis of a compression activated iron(II) phthalocyanine/phthalocyanine metal-free derivative/ferric acetate mixture / _ccreated by Tawanda Mugadza, Edith Antunes and Tebello Nyokong
264	1		_aBangalore : _bSprinter, _c2015.
336			_2rdacontent _atext _btxt
337			_2rdamedia _aunmediated _bn
338			_2rdacarrier _avolume _bnc
440			_aJournal of chemical sciences _vVolume 127, number 7,
520	3		_aThis paper reports on the synthesis of single walled carbon nanotubes (SWCNTs) from an activated mixture of iron (II) phthalocyanine, its metal-free derivative and ferric acetate. The powdered mixture was activated by compression into a tablet by applying a force of 300 kN, followed by re-grinding into powder and heating it to high temperatures (1000°C). The activation by compression resulted in more than 50% debundling of SWCNTs as judged by transition electron microscopy. Acid functionalization of the SWCNTs was confirmed by the increase in the D:G ratio from 0.56 to 0.87 in the Raman spectra and the observation of an average of one carboxylic acid group per 13 carbon atoms from thermogravimetric analysis (TGA). TGA also showed that the initial decomposition temperatures for the activated and non-activated mixtures to be 205°C and 245°C, respectively. Hence, activation leads to the lowering of the pyrolysis temperature of the phthalocyanines. X-ray diffraction, electronic absorption and Fourier transform infrared spectra were also employed to characterize the SWCNT.
650			_aCarbon nanotubes _vIron(II) phthalocyanine _xIron(III) acetate.
700	1		_aAntunes, Edith _eco author
700	1		_aNyokong, Tebello _eco author
856			_uhttps://doi.org/10.1007/s12039-015-0886-y
942			_2lcc _cJA
999			_c169367 _d169367