Fig. 6From: Boron Carbon Oxynitride as a Novel Metal-Free Photocatalysta Overlay UV absorbance spectra of BMH01, BMH03, BGH01, and BGH03. b Stacked photoluminescence spectra of BMH01, BMH03, BGH01, and BGH03 upon excitation at 365 nm c stacked photoluminescence lifetime decay spectrum of BMH01, BMH03, BGH01, and BGH03 monitored at a predetermined λmax for each sample. Samples were excited with 337 nm laser pulses at 298 K, d Overlay Tauc plot (αhv)1/2 vs. hv, for BMH01 (black trace) and BMH03 (green trace). The optical band gap is represented by thesolid line, while the interband state for BMH03 is represented by the red dashed lineBack to article page