We report that the homogeneous light-driven hydrogen evolution reaction (HER) can be significantly enhanced by the presence of seemingly innocent ammonium (NH4+) cations. Experimental studies with different catalysts, photosensitizers and electron donors show this to be a general effect. Preliminary photophysical and mechanistic studies provide initial suggestions regarding the role of ammonium in the HER enhancement.
M. Heiland, R. De, S. Rau, B. Dietzek-Ivansic and C. Streb, Chem. Commun., 2022, 58, 4603 DOI: 10.1039/D2CC00339B
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