Figure 10.

Normalized UV-visible absorption spectra measured by diffuse reflectance spectroscopy of the annealed Cu-doped TiO2 nanomaterials. Samples were annealed for 4 h at 600°C (test 3).

Sahu and Biswas Nanoscale Research Letters 2011 6:441   doi:10.1186/1556-276X-6-441
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