| Автор | Broder, Tessa L. |
| Автор | Silvester, Debbie S. |
| Автор | Aldous, Leigh |
| Автор | Hardacre, Christopher |
| Автор | Crossley, Alison |
| Автор | Compton, Richard G. |
| Дата выпуска | 2007 |
| dc.description | The electrochemical oxidation of 1-butyl-3-methylimidazolium nitrate [C4mim][NO3] was studied by cyclic voltammetry in the room temperature ionic liquid (RTIL) 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide [C2mim][NTf2]. A sharp peak was observed on a Pt microelectrode (d = 10 μm), and a diffusion coefficient at infinite dilution of ca. 2.0 à 10<sup>â 11</sup> m<sup>2</sup> s<sup>â 1</sup> was obtained. Next, the cyclic voltammetry of sodium nitrate (NaNO3) and potassium nitrate (KNO3) was studied, by dissolving small amounts of solid into the RTIL [C2mim][NTf2]. Similar oxidation peaks were observed, revealing diffusion coefficients of ca. 8.8 and 9.0 à 10<sup>â 12</sup> m<sup>2</sup> s<sup>â 1</sup> and solubilities of 11.9 and 10.8 mM for NaNO3 and KNO3, respectively. The smaller diffusion coefficients for NaNO3 and KNO3 (compared to [C4mim][NO3]) may indicate that NO3<sup>â </sup> is ion-paired with Na<sup>+</sup> or K<sup>+</sup>. This work may have applications in the electroanalytical determination of nitrate in RTIL solutions. Furthermore, a reduction feature was observed for both NaNO3 and KNO3, with additional anodic peaks indicating the formation of oxides, peroxides, superoxides and nitrites. This behaviour is surprisingly similar to that obtained from melts of NaNO3 and KNO3 at high temperatures (ca. 350â 500 °C), and this observation could significantly simplify experimental conditions required to investigate these compounds. We then used X-ray photoelectron spectroscopy (XPS) to suggest that disodium(i) oxide (Na2O), which has found use as a storage compound for hydrogen, was deposited on a Pt electrode surface following the reduction of NaNO3. |
| Формат | application.pdf |
| Издатель | Royal Society of Chemistry |
| Название | The electrochemical oxidation and reduction of nitrate ions in the room temperature ionic liquid [C2mim][NTf2]; the latter behaves as a ‘melt’ rather than an ‘organic solvent’ |
| Тип | research-article |
| DOI | 10.1039/b701097d |
| Electronic ISSN | 1369-9261 |
| Print ISSN | 1144-0546 |
| Журнал | New Journal of Chemistry |
| Том | 31 |
| Первая страница | 966 |
| Последняя страница | 972 |
| Аффилиация | Broder Tessa L.; Physical and Theoretical Chemistry Laboratory, University of Oxford |
| Аффилиация | Silvester Debbie S.; Physical and Theoretical Chemistry Laboratory, University of Oxford |
| Аффилиация | Aldous Leigh; School of Chemistry and Chemical Engineering/QUILL |
| Аффилиация | Hardacre Christopher; School of Chemistry and Chemical Engineering/QUILL |
| Аффилиация | Crossley Alison; Department of Materials, University of Oxford Begbroke Business and Science Park |
| Аффилиация | Compton Richard G.; Physical and Theoretical Chemistry Laboratory, University of Oxford |
| Выпуск | 6 |
| Библиографическая ссылка | Moorcroft, Talanta, 2001, 54, 785 |
| Библиографическая ссылка | Davis, Analyst, 2000, 125, 737 |
| Библиографическая ссылка | Pletcher, Electrochim. Acta, 1979, 24, 1253 |
| Библиографическая ссылка | Dima, J. Electroanal. Chem., 2003, 554–555, 15 |
| Библиографическая ссылка | El-Deab, Electrochim. Acta, 2004, 49, 1639 |
| Библиографическая ссылка | Taniguchi, J. Electroanal. Chem. Interfacial Electrochem., 1987, 224, 199 |
| Библиографическая ссылка | de Groot, J. Electroanal. Chem., 2004, 562, 81 |
| Библиографическая ссылка | Fedurco, J. Electrochem. Soc., 1999, 146, 2569 |
| Библиографическая ссылка | Hsieh, Langmuir, 2000, 16, 9501 |
| Библиографическая ссылка | Fletcher, J. Electrochem. Soc., 1979, 126, 1496 |
| Библиографическая ссылка | Johnson, J. Electrochem. Soc., 1977, 124, 448 |
| Библиографическая ссылка | Miles, J. Electrochem. Soc., 1980, 127, 1761 |
| Библиографическая ссылка | Zambonin, J. Electroanal. Chem. Interfacial Electrochem., 1970, 24, 365 |
| Библиографическая ссылка | Bartlett, J. Electrochem. Soc., 1967, 114, 64 |
| Библиографическая ссылка | Swofford, Jr, J. Electrochem. Soc., 1963, 110, 814 |
| Библиографическая ссылка | Xu, J. Power Sources, 2006, 155, 167 |
| Библиографическая ссылка | Buzzeo, ChemPhysChem, 2004, 5, 1106 |
| Библиографическая ссылка | Silvester, Z. Phys. Chem., 2006, 220, 1247 |
| Библиографическая ссылка | Endres, Phys. Chem. Chem. Phys., 2006, 8, 1 |
| Библиографическая ссылка | Howlett, Electrochem. Solid-State Lett., 2004, 7, A97 |
| Библиографическая ссылка | Buzzeo, Anal. Chem., 2004, 76, 4583 |
| Библиографическая ссылка | McEwen, J. Electrochem. Soc., 1999, 146, 1687 |
| Библиографическая ссылка | Wang, J. Phys. Chem. B, 2003, 107, 13280 |
| Библиографическая ссылка | Bonhôte, Inorg. Chem., 1996, 35, 1168 |
| Библиографическая ссылка | Cammarata, Phys. Chem. Chem. Phys., 2001, 3, 5192 |
| Библиографическая ссылка | Schröder, New J. Chem., 2000, 24, 1009 |
| Библиографическая ссылка | Sharp, Electrochim. Acta, 1983, 28, 301 |
| Библиографическая ссылка | Shirley, Phys. Rev. B: Solid State, 1972, 5, 4709 |
| Библиографическая ссылка | D. Briggs and M. P.Seah, in Practical Surface Analysis, Vol 1: Auger and X-ray Photoelectron Spectroscopy, D. Briggs and M. P. Seah, Wiley, Chichester, 2nd edn, 1990, pp. 531–540 |
| Библиографическая ссылка | Shoup, J. Electroanal. Chem. Interfacial Electrochem., 1982, 140, 237 |
| Библиографическая ссылка | Evans, J. Phys. Chem. B, 2004, 108, 7878 |
| Библиографическая ссылка | Buzzeo, J. Phys. Chem. A, 2003, 107, 8872 |
| Библиографическая ссылка | Fietkau, ChemPhysChem, 2006, 7, 1041 |
| Библиографическая ссылка | Harned, J. Am. Chem. Soc., 1958, 80, 2618 |
| Библиографическая ссылка | Yeh, J. Chem. Eng. Data, 1970, 15, 187 |
| Библиографическая ссылка | Daniel, J. Solution Chem., 1991, 20, 633 |
| Библиографическая ссылка | D. F. Shriver , P. W.Atkins and C. H.Langford, Inorganic Chemistry, Oxford University Press, Oxford, UK, 1990 |
