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. 2013 Jun 6;4:345–351. doi: 10.3762/bjnano.4.40

Figure 4.

Figure 4

Band gap obtained by extrapolating the linear portion of the (αhν)1/2 versus photon energy (eV) curve of (a) TiO2 and (b) 3% and (c) 7% Ag-doped TiO2 nanoparticles.