Hydrogen Evolution on Supported Incomplete Cubane-type [Mo3S4]4+ Electrocatalysts
Citations Over TimeTop 14% of 2008 papers
Abstract
Electrocatalytic properties of biomimetic supported incomplete cubane-type [Mo3S4]4+ clusters are investigated. The activity toward the hydrogen evolution reaction (HER) is evaluated on both a high surface area gas diffusion electrode in a membrane electrode assembly and on highly orientated pyrolytic graphite (HOPG) supports. Sub-monolayers of the clusters were imaged by means of scanning tunnelling microscopy (STM) prior to electrochemical characterization. This enabled the quantification of the activity on a per cluster basis for the HER and the comparison of the activity with other HER catalysts. We find that the HER activity of the [Mo3S4]4+ is comparable with that of the edge sites of MoS2. The supported [Mo3S4]4+ molecules were also characterized by X-ray photoelectron spectroscopy (XPS), and the observed deterioration in electrocatalytic activity with time was assigned to slow [Mo3S4]4+ cathodic desorption from the catalyst support.
Related Papers
- → Electrochemical Stability of Low-Density Carboxylic Acid Terminated Monolayers(2010)20 cited
- → Structural ordering of ω-ferrocenylalkanethiol monolayers on Au(111) studied by scanning tunneling microscopy(2009)17 cited
- → Observation of Liquid Crystal Molecule on Graphite by Scanning Tunneling Microscopy(1991)13 cited
- Superperiodic Structures of Highly Oriented Pyrolytic Graphite Observed by Scanning Tunneling Microscopy(2007)
- → A pulse-deposition method for scanning tunneling microscopy of deoxyribonucleic acid on graphite(1991)10 cited