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Resolution: standard / high 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 |
