A novel graphene oxide (GO)/sodium montmorillonite (NaMMT) polymer nanocomposite was synthesized using a simple and environmentally friendly solution-mixing-evaporation technique and characterized using X-ray diffraction (XRD), fourier-transform infrared (FTIR) spectroscopy, field emission scanning electron microscope (FESEM), energy-dispersive X-ray (EDX), Brunauer-Emmett-Teller (BET), thermogravimetric analysis (TGA) and derivative thermogravimetric (DTG) analysis. The nanocomposite, as an efficient adsorbent with a surface area of 230 m² g⁻¹, was subsequently applied for the removal of malachite green (MG) dye from real wastewaters and the effects of MG initial concentration, contact time, solution pH, adsorbent dosage, and the solution temperature were thoroughly studied. The nanocomposite exhibited rapid MG adsorption by reaching to an equilibrium in 20 min and the adsorption process followed the pseudo-second-order kinetic model. Isotherm experiments showed good fitting to the Langmuir model, and the highest adsorption capacity of the GO/NaMMT polymer nanocomposite was 1721 mg g^–1 at the temperature of 30 °C (approximately double the capacity of the highest previously reported adsorbent). Thermodynamic investigations disclosed that the process was inherently spontaneous and endothermic. Taken together, the proposed GO/NaMMT polymer nanocomposite, with the excellent properties, such as facile synthesis, cost-effectiveness (over five reusable cycles without any significant loss of its efficiency), effectiveness in real wastewaters, lack of production of secondary pollutions, stable three-dimensional (3D) structure (allow easy handling and separation during application), have high potential to serve as a highly efficient adsorbent for water/wastewaters treatment applications.

利用一种简单的，环境友好的溶液混合蒸发技术合成了一种新型的氧化石墨烯（GO）/蒙脱土钠（NaMMT）聚合物纳米复合材料，并利用X射线衍射（XRD），傅立叶变换红外光谱（FTIR）进行了表征。发射扫描电子显微镜（FESEM），能量色散X射线（EDX），Brunauer-Emmett-Teller（BET），热重分析（TGA）和衍生热重分析（DTG）分析。纳米复合材料，有效吸附剂，表面积为230 m ² g ^-1，随后被用于从实际废水中去除孔雀石绿（MG）染料，并彻底研究了MG初始浓度，接触时间，溶液pH值，吸附剂用量和溶液温度的影响。纳米复合材料通过在20分钟内达到平衡而表现出快速的MG吸附，并且吸附过程遵循拟二级动力学模型。等温线实验表明，该模型非常适合Langmuir模型，GO / NaMMT聚合物纳米复合材料的最高吸附容量为1721 mg g ^–1在30°C的温度下（大约是以前报道的最高吸附剂容量的两倍）。热力学研究表明，该过程具有固有的自发性和吸热性。综上所述，拟议的GO / NaMMT聚合物纳米复合材料具有优异的性能，例如合成简便，成本效益（在五个可重复使用的循环中，效率没有任何重大损失），在实际废水中的有效性，不产生二次污染，稳定的三维（3D）结构（允许在应用过程中轻松处理和分离），具有很高的潜力，可以用作水/废水处理应用中的高效吸附剂。