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. 2020 Jan 27;10(2):217. doi: 10.3390/nano10020217

Figure 4.

Figure 4

The diffusive reflectance analysis of as-prepared TiO2 and Ag modified TiO2 hybrids to obtained Tauc’s plot for an indirect bandgap model (Kubelka–Munk function). The red line belongs to Ag-TNP hybrids, and the black line belongs to unmodified TiO2 nanoparticles. The dash-dot lines represent the tangent line towards the point, where the line intersects the horizontal energy axis (bandgap). The inset graph shows the enlarged version of the bandgap model study.