Abstract
AbstractThe study reports the preparation and characterization of low cost Cu0 nanoparticles obtained from reduction of impregnated Cu2+ ions on the surface of titanium(IV) oxide (TiO2) during hydrogen releasing from dimethylamine borane (DMAB). Cu0/TiO2 nanoparticles act as active catalyst with a turnover frequency 59.9 h−1 in H2 releasing of dimethylamine borane at 60.0±0.5 °C. The obtained catalysts, Cu0/TiO2 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. Cu0/TiO2 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 Cu0 NPs dispersed on the surface of titania were found as 2.96±0.83 nm. The highest catalytic activity was achieved for Cu0/TiO2 NPs, 0.6 % Cu wt. with a turnover frequency 59.9 h−1 in H2 releasing of dimethylamine borane at 60.0±0.5 °C. The work reported here also includes the kinetic study depending on the temperature.
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