Synthesis of a thiacalix[4]arenetetrasulfonate-functionalized reduced graphene oxide adsorbent for the removal of lead(<scp>ii</scp>) and cadmium(<scp>ii</scp>) from aqueous solutions

Abstract

A thiacalix[4]arenetetrasulfonate-functionalized reduced graphene oxide (TCAS–rGO) adsorbent was synthesized and used as an adsorbent for the removal of lead(<sc>ii</sc>) and cadmium(<sc>ii</sc>) from aqueous solutions.