Rajbhandari Nyachhyon, Armila, and Rojita Pote Shrestha. “Adsorptive Removal of Cr (VI) from Aqueous Solution Using Laboratory Prepared ZnO Nanoparticles”. Scientific World, vol. 16, no. 16, Aug. 2023, pp. 54-62, doi:10.3126/sw.v16i16.56797.