Abstract
Oxothiomolybdenum wheels represent a new family of efficient electrocatalysts for the reduction of protons into hydrogen. The present study focuses on the complex [Mo8S8O8(OH) 8(Ox)]2- (1) as a lithium salt (Ox2- = oxalate), which exhibits an electrocatalytic reduction wave of protons in the presence of perchloric acid at about -1.00 V versus SCE in DMF. Efficiency of this new electrocatalyst was evidenced by cyclic voltammetry and coulometry. DFT calculations were reported and bring about data of the protonated state of the catalyst, the first step of the postulated mechanism in the catalytic reaction. Other weak acids such as p-toluenesulfonic acid, trifluoroacetic acid, and acetic acid in DMF were tested and found to be efficient for the reduction of protons. The complex [Mo12S12O12(OH) 12(Trim)]3- (2) behaves also as an electrocatalyst, functioning at a very low overpotential. Finally, the biomimetic behaviors of this new class of efficient electrocatalysts for hydrogen production mimic those of hydrogenases and compare favorably with their performances.
| Original language | English |
|---|---|
| Pages (from-to) | 1109-1114 |
| Number of pages | 6 |
| Journal | Journal of Physical Chemistry C |
| Volume | 112 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 31 Jan 2008 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- Electronic, Optical and Magnetic Materials
- Surfaces, Coatings and Films
- Energy(all)
Cite this
A new class of efficient electrocatalysts for the reduction of protons into hydrogen based on the [Mo2O2S2]2+ building block. / Keita, Bineta; Floquet, Sébastien; Lemonnier, Jean François; Cadot, Emmanuel; Kachmar, Ali; Bénard, Marc; Rohmer, Marie Madeleine; Nadjo, Louis.
In: Journal of Physical Chemistry C, Vol. 112, No. 4, 31.01.2008, p. 1109-1114.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - A new class of efficient electrocatalysts for the reduction of protons into hydrogen based on the [Mo2O2S2]2+ building block
AU - Keita, Bineta
AU - Floquet, Sébastien
AU - Lemonnier, Jean François
AU - Cadot, Emmanuel
AU - Kachmar, Ali
AU - Bénard, Marc
AU - Rohmer, Marie Madeleine
AU - Nadjo, Louis
PY - 2008/1/31
Y1 - 2008/1/31
N2 - Oxothiomolybdenum wheels represent a new family of efficient electrocatalysts for the reduction of protons into hydrogen. The present study focuses on the complex [Mo8S8O8(OH) 8(Ox)]2- (1) as a lithium salt (Ox2- = oxalate), which exhibits an electrocatalytic reduction wave of protons in the presence of perchloric acid at about -1.00 V versus SCE in DMF. Efficiency of this new electrocatalyst was evidenced by cyclic voltammetry and coulometry. DFT calculations were reported and bring about data of the protonated state of the catalyst, the first step of the postulated mechanism in the catalytic reaction. Other weak acids such as p-toluenesulfonic acid, trifluoroacetic acid, and acetic acid in DMF were tested and found to be efficient for the reduction of protons. The complex [Mo12S12O12(OH) 12(Trim)]3- (2) behaves also as an electrocatalyst, functioning at a very low overpotential. Finally, the biomimetic behaviors of this new class of efficient electrocatalysts for hydrogen production mimic those of hydrogenases and compare favorably with their performances.
AB - Oxothiomolybdenum wheels represent a new family of efficient electrocatalysts for the reduction of protons into hydrogen. The present study focuses on the complex [Mo8S8O8(OH) 8(Ox)]2- (1) as a lithium salt (Ox2- = oxalate), which exhibits an electrocatalytic reduction wave of protons in the presence of perchloric acid at about -1.00 V versus SCE in DMF. Efficiency of this new electrocatalyst was evidenced by cyclic voltammetry and coulometry. DFT calculations were reported and bring about data of the protonated state of the catalyst, the first step of the postulated mechanism in the catalytic reaction. Other weak acids such as p-toluenesulfonic acid, trifluoroacetic acid, and acetic acid in DMF were tested and found to be efficient for the reduction of protons. The complex [Mo12S12O12(OH) 12(Trim)]3- (2) behaves also as an electrocatalyst, functioning at a very low overpotential. Finally, the biomimetic behaviors of this new class of efficient electrocatalysts for hydrogen production mimic those of hydrogenases and compare favorably with their performances.
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U2 - 10.1021/jp0774138
DO - 10.1021/jp0774138
M3 - Article
VL - 112
SP - 1109
EP - 1114
JO - Journal of Physical Chemistry C
JF - Journal of Physical Chemistry C
SN - 1932-7447
IS - 4
ER -