Visible Light‐driven Dehydrogenation of Benzylamine under Liberation of H2. Issue 18 (17th July 2020)

• Record Type: Journal Article
• Authors: Klarner, Mara; Hammon, Sebastian; Feulner, Sebastian; Kümmel, Stephan; Kador, Lothar; Kempe, Rhett
• Is Part Of: ChemCatChem. Volume 12:Issue 18(2020)
• Page Start: 4593
• Page End: 4599
• Publication Date: 2020-07-17
• Subjects: hydrogen generation -- MOF -- nickel -- amines -- photocatalysis; Catalysis -- Periodicals; 541.39505
• DOI: 10.1002/cctc.202000329
• Languages: English
• ISSNs: 1867-3880

Abstract

Abstract: The visible light‐driven transformation of chemical compounds in combination with the liberation of H2 is highly attractive. Herein, we report on a photocatalyst that allows the acceptorless dehydrogenation of benzylamine. Upon light absorption, free charge carriers are generated and used for the concerted imine formation and liberation of H2 . Our photocatalyst consists of CdS as a light harvesting semiconductor supported on colloidal metal‐organic framework crystallites. The decoration with co‐catalytic nickel nanoparticles promotes hydrogen evolution and, in addition, stabilizes the CdS component under irradiation. Abstract : Earth‐abundant metal photocatalyst : The photocatalyst Ni/CdS@MIL‐101 (MIL‐101 green, CdS yellow, Ni grey) dehydrogenates benzylamine via the liberation of H2 (amine splitting). A faster electron transfer from CdS to Ni and a stronger benzylamine binding at the Ni clusters make the earth abundant metal Ni superior in comparison to Pd and Pt.