Selective photo-deposition of Cu onto the surface of monodisperse oleic acid capped TiO2 nanorods probed by FT-IR CO-adsorption studies

Physical Chemistry Chemical Physics : PCCP
Todor HikovRoland A Fischer

Abstract

A novel, non-aqueous, organometallic route to nanocomposite Cu@TiO2 materials is presented. TiO2 nanorods stabilized with oleic acid (OLA) were used as support for the photo-assisted deposition of Cu using the organometallic Cu(II) precursor [Cu(OCH(CH3)CH2N(CH3)2)2] (1). The copper precursor penetrates through the shell of OLA and is photo reduced to deposit Cu0 directly at the surface of the TiO2 rods. The obtained Cu decorated nanorods were still soluble in nonpolar organic solvents without change of the morphology of nanorods. The Cu@TiO2 colloid was characterized by means of UV-VIS, XRD, AAS, and HRTEM. FTIR CO adsorption studies provide evidence for Cu0 anchored at the titania surface by a characteristic absorption at 2084 cm-1. Comparative studies of Cu-deposition were performed using CuCl2 as simple Cu source which proved that the concept of organometallic disguise of the metal centre results in a higher reaction rate and the circumvention of non-selective reduction, parasitic side reactions and undesired agglomeration of the OLA stabilized titania nanorods.

References

Jul 18, 2002·Chemical Communications : Chem Comm·Julia HambrockRoland A Fischer
Sep 19, 2002·Journal of the American Chemical Society·Jun LinYa-Ping Sun
Mar 4, 2003·Chemical Communications : Chem Comm·Lianhai LuRoland A Fischer
Nov 20, 2003·Journal of the American Chemical Society·P Davide CozzoliHorst Weller
Oct 20, 2004·Langmuir : the ACS Journal of Surfaces and Colloids·M K SchröterR A Fischer
Jul 21, 2006·The Journal of Physical Chemistry. B·Andrea PetrellaAngela Agostiano

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Citations

Mar 19, 2014·Nanotechnology·Aleksandra SchejnRaphaël Schneider
Dec 17, 2008·Chemical Communications : Chem Comm·Maike MüllerRoland A Fischer

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