Thiel, T. A.Zhang, XinyiRadhakrishnan, B.van de Krol, RoelAbdi, Fatwa F.Schroeter, M.Schomäcker, ReinhardSchwarze, Michael2023-01-272023-01-272022-10-28https://depositonce.tu-berlin.de/handle/11303/18097https://doi.org/10.14279/depositonce-16890Photodeposition is a specific method for depositing metallic co-catalysts onto photocatalysts and was applied for immobilizing platinum nanoparticles onto cellulose, a photocatalytically inactive biopolymer. The obtained Pt@cellulose catalysts show narrow and well-dispersed nanoparticles with average sizes between 2 and 5 nm, whereby loading, size and distribution depend on the preparation conditions. The catalysts were investigated for the hydrogenation of para-nitrophenol via transfer hydrogenation using sodium borohydride as the hydrogen source, and the reaction rate constant was determined using the pseudo-first-order reaction rate law. The Pt@cellulose catalysts are catalytically active with rate constant values k from 0.09 × 10−3 to 0.43 × 10−3 min−1, which were higher than the rate constant of a commercial Pt@Al2O3 catalyst (k = 0.09 × 10−3 min−1). Additionally, the Pt@cellulose catalyst can be used for electrochemical hydrogenation of para-nitrophenol where the hydrogen is electrocatalytically formed. The electrochemical hydrogenation is faster compared to the transfer hydrogenation (k = 0.11 min−1).en547 Organische ChemiePhotodepositionPt@cellulose catalystselectrochemical hydrogenation of para-nitrophenolimmobilizing platinum nanoparticlesArticle2046-2069