In this paper, the gelation technique was utilized for the synthesis of a Si/Cu amorphous sample composed of oxygen, sodium, silicon, and copper. The obtained sample was identified utilizing FT-IR, EDS, XRD, and FE-SEM instruments. The non-crystalline nature of the obtained sample was confirmed through the presence of XRD broadband in the range 2θ = 16°–46°. Also, the obtained sample was utilized as an economically inexpensive and efficient adsorbent for the removal of methylene blue dye from aqueous media. Besides, several parameters were examined for evaluating the removal of methylene blue dye, for example, kinetic, equilibrium, thermodynamic, and reusability. Moreover, the Freundlich isotherm and pseudo-first-order kinetic model controlled the adsorption process. The maximum adsorption capacity of the obtained adsorbent was 102.05 mg/g. In addition, the negative ∆G° values affirmed the spontaneous properties of the adsorption. Also, the adsorption was exothermic and physical because ∆H° is negative and less than 40 kJ/mol. Finally, the obtained adsorbent was regenerated then reused several times without changing their removing efficiency.

中文翻译：

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硅/铜非晶态吸附剂的合成以有效去除水介质中的亚甲基蓝染料

在本文中，胶凝技术用于合成由氧，钠，硅和铜组成的Si / Cu非晶态样品。使用FT-IR，EDS，XRD和FE-SEM仪器鉴定获得的样品。通过在2θ= 16°–46°范围内存在XRD宽带证实了所获得样品的非晶性质。另外，将获得的样品用作经济上廉价且有效的吸附剂，用于从水性介质中去除亚甲基蓝染料。此外，还检查了一些参数来评估亚甲基蓝染料的去除，例如动力学，平衡，热力学和可重复使用性。此外，Freundlich等温线和拟一级动力学模型控制了吸附过程。所获得的吸附剂的最大吸附容量为102.05mg / g。另外，ΔG°的负值确认了吸附的自发特性。另外，由于∆H°为负且小于40 kJ / mol，因此吸附是放热的和物理的。最后，将获得的吸附剂再生，然后重复使用几次，而不会改变其去除效率。