Hydrogen Storage Enhancement Attained by Fixation of Ti on MWNTs
Nowadays, hydrogen has a preponderant position among the potentially sustainable energy sources. Due to its power density, its storage is of main concern when considering a broad use in practical applications. Carbon nanotubes constitute promising candidates for the design and construction of hydrog...
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| Format: | Article |
| Language: | English |
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Wiley
2012-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2012/801230 |
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| author | J. J. Pérez-Bueno M. L. Mendoza López K. M. Brieño Enriquez J. Ledesma García L. A. Godínez Mora-Tovar C. Angeles Chavez |
| author_facet | J. J. Pérez-Bueno M. L. Mendoza López K. M. Brieño Enriquez J. Ledesma García L. A. Godínez Mora-Tovar C. Angeles Chavez |
| author_sort | J. J. Pérez-Bueno |
| collection | DOAJ |
| description | Nowadays, hydrogen has a preponderant position among the potentially sustainable energy sources. Due to its power density, its storage is of main concern when considering a broad use in practical applications. Carbon nanotubes constitute promising candidates for the design and construction of hydrogen storage devices. This work explores the use of some procedures involving electrochemistry, aimed to bond atomic Ti on the outer surface of MWNTs. Each titanium atom has the potential of hosting two hydrogen molecules and relinquishing them by heating. Nevertheless, nanotubes are difficult to handle due to electrostatic charge and agglomeration, and in this context, two routes were tested as procedures to spread and stick nanotubes on an electrode: (1) a functionalization capable of attaching gold was tested in two forms, as either using 4 nm particles or a flat gold electrode. The fixation of Au particles was confirmed by HRTEM. (2) A simpler route that consisted on drying a CH2Cl2/nanotubes solution previously spread on a glassy carbon flat electrode. CH2Cl2 was selected as the medium and TiCl4 as the precursor for attaching atomic Ti to the nanotubes. The results revealed that hydrogen adsorption, estimated from voltamperometry, was five times higher on Ti-MWNTs than on bare nanotubes. |
| format | Article |
| id | doaj-art-23f97063c7314320825c4f333a4b86cc |
| institution | Kabale University |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2012-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-23f97063c7314320825c4f333a4b86cc2025-02-03T01:03:41ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422012-01-01201210.1155/2012/801230801230Hydrogen Storage Enhancement Attained by Fixation of Ti on MWNTsJ. J. Pérez-Bueno0M. L. Mendoza López1K. M. Brieño Enriquez2J. Ledesma García3L. A. Godínez Mora-Tovar4C. Angeles Chavez5Centro de Investigación y Desarrollo Tecnológico en Electroquímica, S.C. Subdirección de Investigación, Parque Tecnológico Querétaro-Sanfandila, 76703 Pedro Escobedo, QRO, MexicoDepartamento de Metalmecánica, Instituto Tecnológico de Querétaro, Avenida Tecnológico s/n Esq. M. Escobedo, Col. Centro, 76000 Querétaro, QRO, MexicoCentro de Investigación y Desarrollo Tecnológico en Electroquímica, S.C. Subdirección de Investigación, Parque Tecnológico Querétaro-Sanfandila, 76703 Pedro Escobedo, QRO, MexicoDivisión de Investigación y Posgrado, Facultad de Ingeniería, Universidad Autónoma de Querétaro (UAQ), Centro Universitario, 76010 Querétaro, QRO, MexicoCentro de Investigación y Desarrollo Tecnológico en Electroquímica, S.C. Subdirección de Investigación, Parque Tecnológico Querétaro-Sanfandila, 76703 Pedro Escobedo, QRO, MexicoPrograma de Ingeniería Molecular, Instituto Mexicano del Petróleo, Eje Central Lázaro Cárdenas 152, A. P. 14-805, 07730 México City, DF, MexicoNowadays, hydrogen has a preponderant position among the potentially sustainable energy sources. Due to its power density, its storage is of main concern when considering a broad use in practical applications. Carbon nanotubes constitute promising candidates for the design and construction of hydrogen storage devices. This work explores the use of some procedures involving electrochemistry, aimed to bond atomic Ti on the outer surface of MWNTs. Each titanium atom has the potential of hosting two hydrogen molecules and relinquishing them by heating. Nevertheless, nanotubes are difficult to handle due to electrostatic charge and agglomeration, and in this context, two routes were tested as procedures to spread and stick nanotubes on an electrode: (1) a functionalization capable of attaching gold was tested in two forms, as either using 4 nm particles or a flat gold electrode. The fixation of Au particles was confirmed by HRTEM. (2) A simpler route that consisted on drying a CH2Cl2/nanotubes solution previously spread on a glassy carbon flat electrode. CH2Cl2 was selected as the medium and TiCl4 as the precursor for attaching atomic Ti to the nanotubes. The results revealed that hydrogen adsorption, estimated from voltamperometry, was five times higher on Ti-MWNTs than on bare nanotubes.http://dx.doi.org/10.1155/2012/801230 |
| spellingShingle | J. J. Pérez-Bueno M. L. Mendoza López K. M. Brieño Enriquez J. Ledesma García L. A. Godínez Mora-Tovar C. Angeles Chavez Hydrogen Storage Enhancement Attained by Fixation of Ti on MWNTs Advances in Materials Science and Engineering |
| title | Hydrogen Storage Enhancement Attained by Fixation of Ti on MWNTs |
| title_full | Hydrogen Storage Enhancement Attained by Fixation of Ti on MWNTs |
| title_fullStr | Hydrogen Storage Enhancement Attained by Fixation of Ti on MWNTs |
| title_full_unstemmed | Hydrogen Storage Enhancement Attained by Fixation of Ti on MWNTs |
| title_short | Hydrogen Storage Enhancement Attained by Fixation of Ti on MWNTs |
| title_sort | hydrogen storage enhancement attained by fixation of ti on mwnts |
| url | http://dx.doi.org/10.1155/2012/801230 |
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