CC BY 3.0 UnportedThiel, T.A.Zhang, X.Radhakrishnan, B.van de Krol, R.Abdi, F.F.Schroeter, M.Schomäcker, R.Schwarze, M.2023-02-102023-02-102022https://oa.tib.eu/renate/handle/123456789/11405http://dx.doi.org/10.34657/10439Photodeposition 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).enghttps://creativecommons.org/licenses/by/3.0540AluminaAluminum oxideBiopolymersCatalystsCelluloseElectrocatalysisHydrogenHydrogenationNanoparticlesPhenolsSodium BorohydrideArticle