In this investigations, the practicability of utilizing 3-aminopropyl triethoxysilane(3-APTES) crosslinked Chitosan (Ch)/graphene oxide (GO) membranes was explored for adsorptive removal of anionic dyes from aqueous medium. Membranes were successfully fabricated through solution casting technique. Strong interactions among matrix (chitosan), 3-APTES, polyvinylpyrrolidone (PVP) and GO were confirmed by Infrared spectroscopy. Thermal stability of the chitosan was improved by adding graphene oxide and results were verified via thermogravimetric (TGA) analysis. Swelling and hydrolytic results confirmed that 2 %-Ch/PVP was a stable membrane while increasing the amount of 3-APTES in the chitosan nanocomposites membrane decreased its stability in aqueous medium. The adsorption characteristics of the membranes were evaluated by the adsorption of Congo red (CR) dye from aqueous medium. The adsorbent can remove 80 % of CR from aqueous medium and follows 2^nd order kinetics. This study outlines the possibility of exploring green membranes which can be easily fit in various flow systems.

在这项研究中，探讨了利用 3-氨基丙基三乙氧基硅烷 (3-APTES) 交联壳聚糖 (Ch)/氧化石墨烯 (GO) 膜从水性介质中吸附去除阴离子染料的实用性。通过溶液浇铸技术成功地制造了膜。红外光谱证实了基质（壳聚糖）、3-APTES、聚乙烯吡咯烷酮 (PVP) 和 GO 之间的强相互作用。通过添加氧化石墨烯提高了壳聚糖的热稳定性，并通过热重 (TGA) 分析验证了结果。溶胀和水解结果证实，2%-Ch/PVP 是一种稳定的膜，而增加壳聚糖纳米复合膜中 3-APTES 的量会降低其在水性介质中的稳定性。通过从水性介质中吸附刚果红 (CR) 染料来评估膜的吸附特性。吸附剂可以从水性介质中去除 80% 的 CR，并遵循 2^nd级动力学。本研究概述了探索可轻松适用于各种流动系统的绿色膜的可能性。