Facile synthesis, growth process, characterisation of a nanourchin-structured α-MnO and their application on ultrasonic-assisted adsorptive removal of cationic dyes: A half-life and half-capacity concentration approach.

Textile dyes pose a serious threat in terms of water pollution due to its complex aromatic structures and poor degradability. In order to reduce the toxic effects of Crystal Violet (CV) and Methylene Blue (MB), an ultrasonic-assisted dye adsorption using urchin like α-MnO nanostructures was studied. The adsorbent was synthesised by hydrothermal method at low-temperature.