The reduction of oxygen in various room temperature ionic liquids in the temperature range 293-318 K: exploring the applicability of the Stokes-Einstein relationship in room temperature ionic liquids.
The voltammetry for the reduction of oxygen at a microdisk electrode is reported in six commonly used RTILs: [C(4)mim][NTf(2)], [C(4)mpyrr][NTf(2)], [C(4)dmim][NTf(2)], [C(4)mim][BF(4)], [C(4)mim][PF(6)], and [N(6,2,2,2)][NTf(2)], where [C(4)mim](+) is 1-butyl-3-methylimidazolium, [NTf(2)](-) is bis...
| Main Authors: | , , , |
|---|---|
| Format: | Journal article |
| Language: | English |
| Published: |
2009
|
| _version_ | 1826267535139405824 |
|---|---|
| author | Huang, X Rogers, E Hardacre, C Compton, R |
| author_facet | Huang, X Rogers, E Hardacre, C Compton, R |
| author_sort | Huang, X |
| collection | OXFORD |
| description | The voltammetry for the reduction of oxygen at a microdisk electrode is reported in six commonly used RTILs: [C(4)mim][NTf(2)], [C(4)mpyrr][NTf(2)], [C(4)dmim][NTf(2)], [C(4)mim][BF(4)], [C(4)mim][PF(6)], and [N(6,2,2,2)][NTf(2)], where [C(4)mim](+) is 1-butyl-3-methylimidazolium, [NTf(2)](-) is bis(trifluoromethanesulfonyl)imide, [C(4)mpyrr](+) is N-butyl-N-methylpyrrolidinium, [C(4)dmim](+) is 1-butyl-2,3-methylimidazolium, [BF(4)](-) is tetrafluoroborate, [PF(6)](-) is hexafluorophosphate, and [N(6,2,2,2)](+) is n-hexyltriethylammonium at varying scan rates (50-4000 mV s(-1)) and temperatures (293-318 K). Diffusion coefficients, D, of oxygen are deduced at each temperature from potential-step chronoamperometry, and diffusional activation energies are calculated. Oxygen solubilities are also reported as a function of temperature. In the six ionic liquids, the Stokes-Einstein relationship (D proportional, variant eta(-1)) was found to apply only very approximately for oxygen. This is considered in relationship to the behavior of other diverse solutes in RTILs. |
| first_indexed | 2024-03-06T20:55:41Z |
| format | Journal article |
| id | oxford-uuid:392ac8ab-6bc8-445d-a294-f5409c438ce7 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T20:55:41Z |
| publishDate | 2009 |
| record_format | dspace |
| spelling | oxford-uuid:392ac8ab-6bc8-445d-a294-f5409c438ce72022-03-26T13:54:00ZThe reduction of oxygen in various room temperature ionic liquids in the temperature range 293-318 K: exploring the applicability of the Stokes-Einstein relationship in room temperature ionic liquids.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:392ac8ab-6bc8-445d-a294-f5409c438ce7EnglishSymplectic Elements at Oxford2009Huang, XRogers, EHardacre, CCompton, RThe voltammetry for the reduction of oxygen at a microdisk electrode is reported in six commonly used RTILs: [C(4)mim][NTf(2)], [C(4)mpyrr][NTf(2)], [C(4)dmim][NTf(2)], [C(4)mim][BF(4)], [C(4)mim][PF(6)], and [N(6,2,2,2)][NTf(2)], where [C(4)mim](+) is 1-butyl-3-methylimidazolium, [NTf(2)](-) is bis(trifluoromethanesulfonyl)imide, [C(4)mpyrr](+) is N-butyl-N-methylpyrrolidinium, [C(4)dmim](+) is 1-butyl-2,3-methylimidazolium, [BF(4)](-) is tetrafluoroborate, [PF(6)](-) is hexafluorophosphate, and [N(6,2,2,2)](+) is n-hexyltriethylammonium at varying scan rates (50-4000 mV s(-1)) and temperatures (293-318 K). Diffusion coefficients, D, of oxygen are deduced at each temperature from potential-step chronoamperometry, and diffusional activation energies are calculated. Oxygen solubilities are also reported as a function of temperature. In the six ionic liquids, the Stokes-Einstein relationship (D proportional, variant eta(-1)) was found to apply only very approximately for oxygen. This is considered in relationship to the behavior of other diverse solutes in RTILs. |
| spellingShingle | Huang, X Rogers, E Hardacre, C Compton, R The reduction of oxygen in various room temperature ionic liquids in the temperature range 293-318 K: exploring the applicability of the Stokes-Einstein relationship in room temperature ionic liquids. |
| title | The reduction of oxygen in various room temperature ionic liquids in the temperature range 293-318 K: exploring the applicability of the Stokes-Einstein relationship in room temperature ionic liquids. |
| title_full | The reduction of oxygen in various room temperature ionic liquids in the temperature range 293-318 K: exploring the applicability of the Stokes-Einstein relationship in room temperature ionic liquids. |
| title_fullStr | The reduction of oxygen in various room temperature ionic liquids in the temperature range 293-318 K: exploring the applicability of the Stokes-Einstein relationship in room temperature ionic liquids. |
| title_full_unstemmed | The reduction of oxygen in various room temperature ionic liquids in the temperature range 293-318 K: exploring the applicability of the Stokes-Einstein relationship in room temperature ionic liquids. |
| title_short | The reduction of oxygen in various room temperature ionic liquids in the temperature range 293-318 K: exploring the applicability of the Stokes-Einstein relationship in room temperature ionic liquids. |
| title_sort | reduction of oxygen in various room temperature ionic liquids in the temperature range 293 318 k exploring the applicability of the stokes einstein relationship in room temperature ionic liquids |
| work_keys_str_mv | AT huangx thereductionofoxygeninvariousroomtemperatureionicliquidsinthetemperaturerange293318kexploringtheapplicabilityofthestokeseinsteinrelationshipinroomtemperatureionicliquids AT rogerse thereductionofoxygeninvariousroomtemperatureionicliquidsinthetemperaturerange293318kexploringtheapplicabilityofthestokeseinsteinrelationshipinroomtemperatureionicliquids AT hardacrec thereductionofoxygeninvariousroomtemperatureionicliquidsinthetemperaturerange293318kexploringtheapplicabilityofthestokeseinsteinrelationshipinroomtemperatureionicliquids AT comptonr thereductionofoxygeninvariousroomtemperatureionicliquidsinthetemperaturerange293318kexploringtheapplicabilityofthestokeseinsteinrelationshipinroomtemperatureionicliquids AT huangx reductionofoxygeninvariousroomtemperatureionicliquidsinthetemperaturerange293318kexploringtheapplicabilityofthestokeseinsteinrelationshipinroomtemperatureionicliquids AT rogerse reductionofoxygeninvariousroomtemperatureionicliquidsinthetemperaturerange293318kexploringtheapplicabilityofthestokeseinsteinrelationshipinroomtemperatureionicliquids AT hardacrec reductionofoxygeninvariousroomtemperatureionicliquidsinthetemperaturerange293318kexploringtheapplicabilityofthestokeseinsteinrelationshipinroomtemperatureionicliquids AT comptonr reductionofoxygeninvariousroomtemperatureionicliquidsinthetemperaturerange293318kexploringtheapplicabilityofthestokeseinsteinrelationshipinroomtemperatureionicliquids |