Spectral radiative analysis of bio-inspired H2 production in a benchmark photoreactor: a first investigation using spatial photonic balance
arXiv:2011.03792 · doi:10.1016/j.ijhydene.2018.03.097
Abstract
The iron thiolate complex is a simplified model of the active site of diiron hydrogenase enzymes. Here, we describe the implementation of this noble metal free catalyst in aqueous solutions using eosin Y as photosensitizer and triethylamine as an electron donor in an experimental bench specially designed for the study of H2 photoproduction. The bench is composed of an adjustable visible light source, a fully equipped flat torus photoreactor and analytical devices. Rates of H2 production under varied experimental conditions were obtained from an accurate measurement of pressure increase. A spectral radiative analysis involving blue photons of the source primarily absorbed has been carried out. Results have proven the rate of H2 production is proportional to the mean volumetric rate of radiant light absorbed demonstrating a linear thermokinetic coupling. The bio-inspired catalyst has proven non-limiting and reveals interesting capabilities for future large scale H2 production.
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