Collect. Czech. Chem. Commun. 2011, 76, 1335-1346
Published online 2011-11-20 19:54:20

Photoconversion of CO2 using copper-modified titanium dioxide nanoparticles

Jing Wei, Xin Tan, Tao Yu* and Lin Zhao

School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China


A series of copper-modified titanium dioxide (Cu/TiO2) nanoparticles were synthesized via one-step sol-gel method. The crystal structure and chemical properties were characterized using X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). The Cu/TiO2 nanoparticles were applied to CO2 photoconversion and the yield of formaldehyde was used to evaluate the photocatalytic performance. The optimum amount of copper modifying was 0.6 wt.% and the yield of formaldehyde was 946 μmol/gcat under UV illumination for 6 h. 20 wt.% Cu/TiO2 also performed a high photocatalytic activity, which yielded 433 μmol/gcat formaldehyde under UV illumination for 6 h.

Keywords: Photoconversion; Carbon dioxide; Formaldehyde; Titanium dioxide; Copper; Environmental chemistry; Photolysis; Materials science.

References: 26 live references.