Abstract

Chitosan (Chit) is among the most widely used polysaccharides. Another material that draws attention with its unique physical and chemical properties is graphene oxide (GO). Reactive groups in the structure of both chitosan and graphene oxide make both materials ideal adsorbents. GO is an excellent adsorbent candidate with its large surface area and mechanical strength. However, the difficulty in recovering GO particles as an adsorbent creates a secondary environmental problem. Chitosan shows a weak interest in positively charged pollutants. The incorporation of GO into chitosan increases both the mechanical strength and adsorption capacity of the chitosan. The GO/Chitosan composite also offers the advantage of attracting both positively and negatively charged pollutants. Over the past five years, an increasing number of articles have been published reporting the use of GO/Chitosan-based composite materials as adsorbents in dye removal. The adsorption properties of GO/Chitosan-based composites appear to change with the inclusion of materials like magnetite, nano-metal, and other polysaccharides. It is seen that the differences in the preparation steps of composites of the same structure also affect their adsorption capacities. This paper aims to compile the works between January 2016 and December 2020 on GO/Chitosan-based composites, which were reported to remove dyes from wastewater.

摘要

壳聚糖（Chit）是应用最广泛的多糖之一。另一种以其独特的物理和化学性质引起人们注意的材料是氧化石墨烯 (GO)。壳聚糖和氧化石墨烯结构中的反应性基团使这两种材料成为理想的吸附剂。GO 具有较大的表面积和机械强度，是一种出色的吸附剂​​候选物。然而，回收 GO 颗粒作为吸附剂的难度会产生次要的环境问题。壳聚糖对带正电荷的污染物表现出微弱的兴趣。将 GO 掺入壳聚糖中增加了壳聚糖的机械强度和吸附能力。GO/壳聚糖复合材料还具有吸引带正电和带负电的污染物的优势。在过去的五年里，越来越多的文章报道了使用 GO/壳聚糖基复合材料作为吸附剂去除染料。GO/壳聚糖基复合材料的吸附性能似乎会随着磁铁矿、纳米金属和其他多糖等材料的加入而发生变化。可以看出，相同结构的复合材料制备步骤的不同也会影响其吸附能力。本文旨在汇编 2016 年 1 月至 2020 年 12 月期间关于 GO/壳聚糖基复合材料的工作，据报道这些复合材料可去除废水中的染料。可以看出，相同结构的复合材料制备步骤的不同也会影响其吸附能力。本文旨在汇编 2016 年 1 月至 2020 年 12 月期间关于 GO/壳聚糖基复合材料的工作，据报道这些复合材料可去除废水中的染料。可以看出，相同结构的复合材料制备步骤的不同也会影响其吸附能力。本文旨在汇编 2016 年 1 月至 2020 年 12 月期间关于 GO/壳聚糖基复合材料的工作，据报道这些复合材料可去除废水中的染料。