Among the removal/remediation strategies, adsorption is eco-friendly, economical, efficient, and simple. The solid-phase adsorption reduces undesirable by-products, adsorbent materials separate by filtration and recovered for repetitive uses applying simple basic/acid treatment . In this regard, novel layered materials for arsenic sorption have emerged as new alternatives to commercial adsorbents, featuring a large surface area, high adsorption capacity, straight synthesis, and easy recovery. Graphene oxide composites (with chitosan and metal oxides) demonstrated efficient arsenic removal from different water sources, where adsorption performance enhances depending on the oxidation degree . The arsenic adsorption capacity of graphene oxide also increases by inner-sphere complexation, especially using hydroxyl and carboxyl groups as oxidizing groups .