Figure 5. Representative absorbance spectra for specified time of uv-visible illumination of methylene blue (MB) and p-nitroaniline (p-NA) solutions in the absence (a, c) or presence (b, d) of 4% Zn-doped GaN photocatalysts

From

Solution-phase Synthesis of Zn-doped GaN Photocatalysts: Morphology, Composition, and Catalytic Activity towards Methylene Blue Degradation and 4-nitroaniline Conversion

Keerthi Senevirathne, Sanuja Pitigala, Shyamalee Ramaraj, Abdou Lachgar, Richard T. Williams

American Journal of Nanomaterials. 2017, 5(2), 43-50 doi:10.12691/ajn-5-2-1