<abstract abstract-type="toc"> <title> <x xml:space="preserve">Abstract</x> </title> <p> <graphic position="anchor" id="ga" xlink:href="ark:/27927/pgh3qrgm6tq" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink" />The magnetic Ni nanoparticles encapsulated in carbon shells were anchored on to reduced graphene oxide. The excellent removal ability of organic dyes and enhanced separation efficiency make NGC a useful candidate for waste water treatment.</p> </abstract>