The electrochemical behaviour of ferrocene in deep eutectic solvents based on quaternary ammonium and phosphonium salts

被引：51

作者：

Bahadori, Laleh ^{[1
]}

Manan, Ninie Suhana Abdul ^{[2
]}

Chakrabarti, Mohammed Harun ^{[1
,3
]}

Hashim, Mohd. Ali ^{[1
]}

Mjalli, Farouq Sabri ^{[4
]}

AlNashef, Inas Muen ^{[5
]}

Hussain, Mohd. Azlan ^{[1
]}

Low, Chee Tong John ^{[6
]}

机构：

[1] Univ Malaya, Fac Engn, Dept Chem Engn, Kuala Lumpur 50603, Malaysia

[2] Univ Malaya, Fac Sci, Dept Chem, Kuala Lumpur 50603, Malaysia

[3] Univ London Imperial Coll Sci Technol & Med, Energy Futures Lab, London SW7 2AZ, England

[4] Sultan Qaboos Univ, Petr & Chem Engn Dept, Muscat 123, Oman

[5] King Saud Univ, Coll Engn, Dept Chem Engn, Riyadh 11421, Saudi Arabia

[6] Univ Southampton, Fac Engn & Environm, Electrochem Engn Lab, Energy Technol Res Grp, Southampton SO17 1BJ, Hants, England

来源：

PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 2013年 / 15卷 / 05期

关键词：

TEMPERATURE IONIC LIQUIDS; POTENTIAL CALIBRATION; REFERENCE ELECTRODE; VOLTAMMETRY; TETRAFLUOROBORATE; SUPEROXIDE; OXIDATION; SYSTEMS; RANGE; AIR;

D O I：

10.1039/c2cp43077k

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The electrochemical behaviour of ferrocene (Fc) is investigated in six different deep eutectic solvents (DESs) formed by means of hydrogen bonding between selected ammonium and phosphonium salts with glycerol and ethylene glycol. Combinations of cyclic voltammetry and chronoamperometry are employed to characterise the DESs. The reductive and oxidative potential limits are reported versus the Fc/Fc(+) couple. The diffusion coefficient, D, of ferrocene in all studied DESs is found to lie between 8.49 x 10(-10) and 4.22 x 10(-8) cm(2) s(-1) (these do not change significantly with concentration). The standard rate constant for heterogeneous electron transfer across the electrode/DES interface is determined to be between 1.68 x 10(-4) and 5.44 x 10(-4) cm s(-1) using cyclic voltammetry. These results are of the same order of magnitude as those reported for other ionic liquids in the literature.

引用

页码：1707 / 1714

页数：8

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