Abstract
A rapid scan spectrophotometer has been coupled to a rotating disk electrode (RDE) to enable acquisition of potential difference near normal incidence UV-visible reflection absorption spectra of electrogenerated species in the diffusion boundary layer. The (correlated) noise associated with the wobbling of the RDE and other imperfections could be eliminated by synchronizing the rotation angle of the disk, with respect to an arbitrary fixed point, and the initiation of each spectral scan. This strategy was implemented by employing a signal generated by an optical sensor coupled to the rotating shaft as a primary source to drive the grating/galvanometer unit of a Harrick rapid scan spectrophotometer
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