Photocatalytic Activity and Characterization of Carbon-Modified Titania for Visible-Light-Active Photodegradation of Nitrogen Oxides

Figure 6

Raman spectra with 1% (a) and 10% (b) power for all samples; 10% power for iC4/UV100 over 6 times of test (c).

(a)

(b)

(c)