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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 À 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), Ultravioletvisible spectroscopy (UV vis.) and X-ray photoelectron spectro-scopy (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 À 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.

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