Synthesis of Titania-supported Copper Nanoparticles via Refined Alkoxide Sol-gel Process
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Nanoparticles of titania and copper-loaded titania were synthesized by a refined sol-gel method using titanium butoxide. Unlike the conventional sol-gel procedure of adding water directly, the esterification of anhydrous butanol and glacial acetic acid provided the hydrolyzing water. In addition, acetic acid also served as a chelating ligand to stabilize the hydrolysis-condensation process and minimize the agglomeration of titania. Following the hydrolysis, Cu/TiO2 was prepared by adding copper chloride to titania sol. The sol was dried, then calcined at 500°C to remove organics and transformed to anatase titania which was verified by XRD. Cu/TiO2 was further hydrogen-reduced at 300°C. The recovery of Ti was exceeded by an average of 95% from titanium butoxide. TEM micrographs show that the Cu/TiO2 particles are near uniform. The average crystallite sizes are 17–20 nm estimated from the peak broadening of XRD spectra. The bandgaps of TiO2 and reduced Cu/TiO2 range from 2.70 to 3.15 eV estimated from the diffusive reflective UV-Vis spectra. XPS analysis shows that Cu 2p3/2 is 933.4 eV indicating primary Cu2O form on the TiO2 supports. The binding energy of Ti does not exhibit chemical shift suggesting negligible interaction of Cu cluster and TiO2 support.
- Adachi K., K. Ohta & T. Mizuno, 1994. Photocatalytic reduction of carbon dioxide to hydrocarbon using copper-loaded titanium dioxde. Solar Energy 53(2), 187–190.
- Anpo M., H. Yamashita, Y. Ichihashi & S. Ehara, 1995. Photocatalytic reduction of CO2 with H2O on various titanium oxide catalysts. J. Electroanalyt. Chem. 396, 21–26.
- Anpo M., T. Shima, S. Kodama & Y. Kubokawa, 1987. Photocatalytic hydrogenation of CH3CCH with H2O on small-particle TiO2: size quantization effects and reaction intermediates. J. Phys. Chem. 91, 4305–4310.
- Bhattacharya A.K., D.R. Pyke, R. Reynolds, G.S. Walker & C.R. Werrett, 1997. The use of O1s charge referencing for the X-ray photoelectron spectroscopy of Al/Si, Al/Ti and Al/Zr mixed oxides. J. Mater. Sci. Lett. 16, 1–3.
- Doeuff S., M. Henry & C. Sanchez, 1990. Sol-gel synthesis and characterization of titanium oxo-acetate polymers. Mat. Res. Bull. 25(12), 1519–1529.
- Doeuff S., M. Henry, C. Sanchez & J. Livage, 1987. Hydrolysis of the titanium alkoxides: modification of the molecular precusor by acetic acid. J. Non-Crystall. Solids 89, 206–216.
- Sanchez E. & T. Lopez, 1995. Effect of the preparation method on the band gap of titania and platinum-titania sol-gel materials. Mater. Lett. 25, 271–273.
- Scrocco M., 1979. Satellite structure in the X-ray photoelectron spectra of CuO and Cu2O. Chem. Phys. Lett. 63(1), 52–56.
- Wolf C. & C. Rüssel, 1992. Sol-gel formation of zirconia: preparation, structure and rheology of sols. J. Mater. Sci. 27, 3749–3755.
- Wu J.C.S. & L.-C. Cheng, 2000.Animproved synthesis of ultrafiltration zirconia membranes via the sol-gel route using alkoxide precursor. J. Memb. Sci. 167(2), 253–261.
- Yamashita H., H. Nishiguchi, N. Kamada & M. Anpo, 1994. Photocatalytic reduction of CO2 with H2O on TiO2 and Cu/TiO2 catalysts. Res. Chem. Interme. 20(8), 825–823.
- Synthesis of Titania-supported Copper Nanoparticles via Refined Alkoxide Sol-gel Process
Journal of Nanoparticle Research
Volume 3, Issue 2-3 , pp 113-118
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