R. A. Almasoud, E. S. Aazam, and R. M. Mohamed, “Effect of Concentration of Glycine Surfactant on Photocatalytic Properties of Zinc Oxide Nanoparticles for Photocatalytic Degradation of Methylene Blue”, ajc, vol. 29, no. 9, pp. 1907–1911, Jul. 2017.