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Cu 0 /TiO 2 Nanoparticles as Active Catalyst for H 2 Production from Dimethylamine Borane
Author(s) -
Karacan Yesim Öztürk,
Karaboga Seda,
Morkan İzzet
Publication year - 2021
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.202101405
Subject(s) - dimethylamine , borane , dehydrogenation , catalysis , x ray photoelectron spectroscopy , nanoparticle , materials science , nuclear chemistry , ammonia borane , inorganic chemistry , chemistry , chemical engineering , nanotechnology , organic chemistry , engineering
The study reports the preparation and characterization of low cost Cu 0 nanoparticles obtained from reduction of impregnated Cu 2+ ions on the surface of titanium(IV) oxide (TiO 2 ) during hydrogen releasing from dimethylamine borane (DMAB). Cu 0 /TiO 2 nanoparticles act as active catalyst with a turnover frequency 59.9 h −1 in H 2 releasing of dimethylamine borane at 60.0±0.5 °C. The obtained catalysts, Cu 0 /TiO 2 NPs, were isolated from reaction medium and characterized by transmission electron microscopy (TEM), X‐ray diffraction (XRD), Ultraviolet‐visible spectroscopy (UV vis.) and X‐ray photoelectron spectroscopy (XPS) techniques. Cu 0 /TiO 2 nanoparticles with different metal loadings (4.0–8.0 % Cu wt.) were prepared and tested as catalyst in dehydrogenation of dimethylamine borane at 60.0±0.5 °C. All results reveal that Cu 0 NPs dispersed on the surface of titania were found as 2.96±0.83 nm. The highest catalytic activity was achieved for Cu 0 /TiO 2 NPs, 0.6 % Cu wt. with a turnover frequency 59.9 h −1 in H 2 releasing of dimethylamine borane at 60.0±0.5 °C. The work reported here also includes the kinetic study depending on the temperature.