This study focused on the synthesis optimization and characterization of hybrid ion exchangers of graphene oxide/chitosan/zirconiumphosphate/silicate (GO/CS/ZrP/Si) nano-composite. Different characterization techniques as IR, XRD, TG–DTA, SEM, TEM, EDX and surface area have been employed to elucidate the structure of the prepared material. The characterization showed that GO/CS/ZrP/Si particles are spherical double core shell in shape and have a unique size of about 25–60 nm in diameter in mesoporous range. The adsorbed dose, chemical and radiation stability have been investigated. The optimum adsorbent dose was determined to be 0.1 g. GO/CS/ZrP/Si nanocomposite showed bi-function behaviors with good chemical, thermal and radiation stability. The adsorption ability and capacity of GO/CS/ZrP/Si nanocomposite were evaluated with batch technique using a series of metal ions like Cs⁺, Co²⁺, Sm³⁺, La³⁺, Tb³⁺ and Eu³⁺. The selectivity order was found that; Sm³⁺ > La³⁺ > Eu³⁺ > Tb³⁺ ⋙Co²⁺ > Cs⁺. The effect of pH and distribution coefficient was investigated at different reaction temperatures for the studying ions on GO/CS/ZrP/Si. The effect of competitive ions on the adsorption of Eu³⁺ on GO/CS/ZrP/Si was studied. The anti-bacterial activity of ZrP/Si and GO/CS/ZrP/Si against E.coli and Staphylococcus were determined with disk diffusion method. The nano composite GO/CS/ZrP/Si was found good antimicrobial behavior.

中文翻译：

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双核壳纳米复合纳米二氧化硅对Eu 3+，Tb 3+，La 3+和Sm 3+的有效富集

这项研究的重点是氧化石墨烯/壳聚糖/磷酸锆/硅酸盐（GO / CS / ZrP / Si）纳米复合材料的混合离子交换剂的合成优化和表征。已经采用了不同的表征技术，例如IR，XRD，TG-DTA，SEM，TEM，EDX和表面积来阐明所制备材料的结构。表征表明，GO / CS / ZrP / Si颗粒为球形双核壳状，在介孔范围内具有独特的直径约25-60 nm。已经研究了吸附剂量，化学和辐射稳定性。确定最佳吸附剂量为0.1 g。GO / CS / ZrP / Si纳米复合材料表现出双功能行为，具有良好的化学，热和辐射稳定性。⁺，Co 2 ⁺，Sm ³⁺，La ³⁺，Tb ³⁺和Eu ³⁺。发现选择性顺序为：Sm ³⁺  > La ³⁺  > Eu ³⁺  > Tb ³⁺  ⋙Co2 ⁺  > Cs ⁺。研究了在GO / CS / ZrP / Si上离子对pH和分布系数在不同反应温度下的影响。竞争离子对Eu ³⁺吸附的影响在GO / CS / ZrP / Si上进行了研究。采用圆盘扩散法测定了ZrP / Si和GO / CS / ZrP / Si对大肠杆菌和葡萄球菌的抗菌活性。发现纳米复合材料GO / CS / ZrP / Si具有良好的抗菌性能。