Figure 10.
(a) UV-vis diffuse reflectance spectra of SnO2, g-C3N4, and SnO2/g-C3N4-7 composites, (b) plot of (Ahv)2 versus energy (hv) for the band gap energy of SnO2, (c) plot of (Ahν)1/2 versus energy (hν) for the band gap energy of g-C3N4.
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