Synthesis and characterization of carbon nanomaterials functionalized by direct treatment with sulfonating agents; Microporous and Mesoporous Materials; Vol. 299
| Parent link: | Microporous and Mesoporous Materials Vol. 299.— 2020.— [110130, 11 p.] |
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| Autor Corporativo: | |
| Outros autores: | , , , , |
| Summary: | Title screen The sulfonated (SO3H-functionalized) carbon nanomaterials were obtained by direct sulfonation of the initial carbon nanofibers and nanotubes. Concentrated sulfuric acid, oleum (20% SO3) and sulfonating mixtures containing 5 wt% MSO4/H2SO4 (98%; M = VO2+, Cu2+, etc.) were used as a sulfating agents. It was shown that the use of MSO4/H2SO4 sulfonating mixtures allows achieving the efficiency of the sulfonation comparable with the case of oleum. Thus, in the case of the most effective sulfonating mixtures containing such ions as VO2+, Cu2+, Fe3+, the values of the sulfur content were 1.2, 1.1 and 1.15 wt%, respectively. The optimal temperature of the sulfonation process was found to be in a range of 180-200 °C. All this provides a high acidity of the obtained materials along with maintaining the textural parameters (specific surface area of ~100 and ~300 m2/g for CNF and CNT, respectively). The structural changes of the materials taking place during the sulfonation process were studied by means of low-temperature nitrogen adsorption, X-ray photoelectron spectroscopy, Raman spectroscopy, high resolution transmission electron microscopy, and both the titrimetric and elemental analyses. According to the data obtained, high efficiency of the sulfonating mixtures is stipulated by the process of oxidative destruction of the surface layer of the carbon material that leads to an increase of its defectiveness thus enhancing the sulfonation efficiency. Режим доступа: по договору с организацией-держателем ресурса |
| Idioma: | inglés |
| Publicado: |
2020
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| Subjects: | |
| Acceso en liña: | https://doi.org/10.1016/j.micromeso.2020.110130 |
| Formato: | MixedMaterials Electrónico Capítulo de libro |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=663634 |
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| 200 | 1 | |a Synthesis and characterization of carbon nanomaterials functionalized by direct treatment with sulfonating agents |f A. P. Koskin, Yu. V. Larichev, I. V. Mishakov [et al.] | |
| 203 | |a Text |c electronic | ||
| 300 | |a Title screen | ||
| 320 | |a [References: 47 tit.] | ||
| 330 | |a The sulfonated (SO3H-functionalized) carbon nanomaterials were obtained by direct sulfonation of the initial carbon nanofibers and nanotubes. Concentrated sulfuric acid, oleum (20% SO3) and sulfonating mixtures containing 5 wt% MSO4/H2SO4 (98%; M = VO2+, Cu2+, etc.) were used as a sulfating agents. It was shown that the use of MSO4/H2SO4 sulfonating mixtures allows achieving the efficiency of the sulfonation comparable with the case of oleum. Thus, in the case of the most effective sulfonating mixtures containing such ions as VO2+, Cu2+, Fe3+, the values of the sulfur content were 1.2, 1.1 and 1.15 wt%, respectively. The optimal temperature of the sulfonation process was found to be in a range of 180-200 °C. All this provides a high acidity of the obtained materials along with maintaining the textural parameters (specific surface area of ~100 and ~300 m2/g for CNF and CNT, respectively). The structural changes of the materials taking place during the sulfonation process were studied by means of low-temperature nitrogen adsorption, X-ray photoelectron spectroscopy, Raman spectroscopy, high resolution transmission electron microscopy, and both the titrimetric and elemental analyses. According to the data obtained, high efficiency of the sulfonating mixtures is stipulated by the process of oxidative destruction of the surface layer of the carbon material that leads to an increase of its defectiveness thus enhancing the sulfonation efficiency. | ||
| 333 | |a Режим доступа: по договору с организацией-держателем ресурса | ||
| 461 | |t Microporous and Mesoporous Materials | ||
| 463 | |t Vol. 299 |v [110130, 11 p.] |d 2020 | ||
| 610 | 1 | |a труды учёных ТПУ | |
| 610 | 1 | |a электронный ресурс | |
| 610 | 1 | |a carbon nanofibers | |
| 610 | 1 | |a carbon nanotubes | |
| 610 | 1 | |a SO3H-finctionalization | |
| 610 | 1 | |a direct sulfonation | |
| 610 | 1 | |a textural and structural properties | |
| 610 | 1 | |a sulfonating agents | |
| 610 | 1 | |a углеродные нановолокна | |
| 610 | 1 | |a углеродные нанотрубки | |
| 610 | 1 | |a сульфирование | |
| 610 | 1 | |a структурные свойства | |
| 701 | 1 | |a Koskin |b A. P. |g Anton Pavlovich | |
| 701 | 1 | |a Larichev |b Yu. V. |g Yury | |
| 701 | 1 | |a Mishakov |b I. V. | |
| 701 | 1 | |a Melgunov |b M. S. |g Maksim | |
| 701 | 1 | |a Vedyagin |b A. A. |c Chemist |c Chief Expert of Tomsk Polytechnic University, Candidate of chemical sciences |f 1975- |g Aleksey Anatolievich |3 (RuTPU)RU\TPU\pers\36694 |9 19733 | |
| 712 | 0 | 2 | |a Национальный исследовательский Томский политехнический университет |b Исследовательская школа химических и биомедицинских технологий |c (2017- ) |3 (RuTPU)RU\TPU\col\23537 |
| 801 | 2 | |a RU |b 63413507 |c 20210224 |g RCR | |
| 850 | |a 63413507 | ||
| 856 | 4 | 0 | |u https://doi.org/10.1016/j.micromeso.2020.110130 |
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