Graphene oxide supported copper oxide nanoneedles: An efficient hybrid material for removal of toxic azo dyes

• Successfully synthesized heterogeneous GO-CuONNs.
• GO-CuONNs shows adsorptions performance towards ionic fabric dyes.
• Material exhibits easy separation and reusability in removal of CBB, CR, MB and AB-10B dye system.
• GO-CuONNs shows increased hydrophobic and hydrophilic environment

Herein, we report a simple, one step synthesis of hybrid copper oxide nanoneedles on graphene oxide sheets (GO-CuONNs) through sonochemical method. The present method affords a facile mean for controlling effective concentration of the active CuO nanoneedles on the graphene oxide sheets, and also offers the necessary stability to the resulting GO-CuONNs structure for adsorption transformations.Furthermore, this hybrid GO-CuONNs is successfully employed in the removal of a series of hazardous ionic organic dyes namely coomassie brilliant blue, methylene blue, congo red and amidoblack 10B. Through careful investigation of the material, we found that the synergetic effect between CuONNs and GO play a significant role in the adsorption of all the dyes studied. The prepared hybrid material contains both hydrophobic and hydrophilic environment which is expected to enhance the electrostatic interaction between the adsorbent and the dye molecules, consequently favouring the adsorption process.

Copper oxide nanoneedles stabilized with graphene oxide system exhibited better.catalytic activity towards the removal of toxic azo dyesFigure optionsDownload as PowerPoint slide