Figure 6.

Absorption spectrum of Cu-doped TiO2 nanomaterials prepared at various dopant concentrations. (a) Normalized UV-visible absorption spectra measured by diffuse reflectance spectroscopy. (b) Estimated band gap as a function of dopant concentrations (test 1)

Sahu and Biswas Nanoscale Research Letters 2011 6:441   doi:10.1186/1556-276X-6-441
Download authors' original image