Progresses and expansions of chitosan-graphene oxide hybrid networks utilizing as adsorbents and their organic dye removal performances: A short review

Abstract

Increasing concentration of pollutants has significantly affected the quality of water, especially for organic dyes-contained water/wastewater. This is probably reduced effectively through adsorbing the pollutants onto potential materials-based adsorbents. Chitosan/graphene oxide (CTS/GO) hybrid networks utilizing as adsorbents are attracting considerable interest owing to the available functional groups, which can remove plenty of the organic dyes from water/wastewater. In this review, the progress and expansions of CTS/GO hybrid networks-based adsorbents are summarized and discussed in detail. Following the general introduction and properties of each material system (i.e., CTS, GO and CTS/GO hybrid networks), the CTS/GO hybrid networks-based emerging adsorbents with coupling numerous other support materials (i.e., reduced GO, magnetic iron oxide, polymeric materials, metal-organic frameworks, etc.) are compared and discussed in short, at same time that some common organic dyes used in adsorption studies are also introduced. Besides, adsorption technique and mechanisms (i.e., adsorption kinetics and isotherms) focus on the CTS/GO hybrid networks' role are discussed as well. Although there are still some challenges from the reviewed researches, the CTS/GO hybrid networks-based emerging materials can be considered promising and potential adsorbents. Moreover, this review can provide a clear overview of CTS/GO hybrid networks-based adsorbents in organic dye removal applications to readers.