Synthesis of pure nickel(<scp>iii</scp>) oxide nanoparticles at room temperature for Cr(<scp>vi</scp>) ion removal

Abstract

Ni₂O₃ nanoparticles of various sizes (25.8 to 49.7 nm), obtained by a facile oxidation process using Ni(NO₃)₂·6H₂O and alkaline NaOCl as precursor at various temperatures (0, 25, 50 and 70 °C), are found to remove toxic Cr(<sc>vi</sc>) from aqueous solution.