Abstract
Magnetic field effects can provide a handle on steering chemical reactions and manipulating yields. The presence of a magnetic field can influence the energy levels of the active species by interacting with their spin states. Here we demonstrate the effect of a magnetic field on the electrocatalytic processes taking place on platinum-based nanoparticles in fuel cell conditions. We have identified a shift in the potentials representing hydrogen adsorption and desorption, present in all measurements recorded in the presence of a magnetic field. We argue that the changes in electrochemical behavior are a result of the interactions between the magnetic field and the unpaired spin states of hydrogen.
Highlights
Our aim is to explore how the catalytic behavior of a specific electrochemical process can be altered, and better understood
In this paper we present our study on the effects of an external magnetic field on the electrocatalytic processes taking place on four platinum-based electrocatalysts
The loss estimated by ECSA is larger than the area loss estimated with optical microscopy
Summary
Our aim is to explore how the catalytic behavior of a specific electrochemical process can be altered, and better understood. We are here considering magnetic fields as a handle to influence electrochemical processes. Steiner et al were the first to compose a bird’s-eye review on magnetic effect on chemical reactions, including examples like magnetic fluorescence quenching, photo-addition of SO2 to pentane, thermal decomposition of organic peroxides, reactions of alkali-metal alkyls with alkyl halides etc. The review refers to a variety of reports on magnetic field effects on photophysical phenomena in (organic) molecular crystals, such as luminescence and photoconductivity. As described by Steiner et al most magnetic field effects in chemical processes take place in liquid solutions, mostly as a result of radical pair mechanism (Okazaki and Shiga, 1986; Steiner and Ulrich, 1989). Torun et al describe how the existence of a local magnetic moment of RuO2 catalyst surfaces conserves the angular momentum and enables the production of magnetic oxygen from non-magnetic water (Torun et al, 2013)
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