PVA-co-AAm/TiO₂/SiO₂ nanocomposites adsorbents synthesized by γ-irradiation copolymerization of polyvinyl alcohol (PVA) and acrylamide (AAm) incorporated TiO₂/SiO₂ nanopowders, aiming to enhance the removal of basic blue 3 dye (BB3) and Cu (II) ions from aqueous solutions. Properties of nanocomposites were analyzed by different techniques. FTIR results showed successful incorporation of nanoparticles and copolymerization of PVA and AAM. SEM/EDS confirm the peaks belonging to C, O, Si, and Ti. TEM investigation illustrated that TiO₂/SiO₂ nanoparticles were well dispersion, uniform, and homogeneous shape of particle size of 60–70 nm. XRD data specified characteristic diffraction peaks of TiO₂ and the calculated crystalline size was 43 nm. Adsorption results confirm that PVA-co-AAm/TiO₂/SiO₂ nanocomposites provide better adsorption capacities of both BB3 and Cu (II) was three-folds rather than PVA-co-AAm-30. The nanocomposite prepared at 30 kGy (PVA-co-AAm/TiO₂/SiO₂-30) showed high swelling, gelation, and highest adsorption capacity and it was selected as the best adsorbent for batch experiments. The optimum adsorption was achieved using 0.4 g PVA-co-AAm/TiO₂/SiO₂-30 adsorbent dosage. The adsorption capacity of BB3 and Cu (II) was 140.9 and 190.3 mg/g with a removal efficiency of 93.5 and 95.2% after 7 h and 6 h, pH 11 and pH 6, and initial concentration of 150 and 200 mg/L, respectively. The adsorption of BB3 or Cu (II) was endothermic and spontaneous, well described by the pseudo-second-order adsorption kinetic and fit Langmuir isotherm. The results revealed that the as-synthesized PVA-co-AAm/TiO₂/SiO₂ nanocomposites could be employed as effective adsorbents for the adsorption of BB3 and Cu (II) ions from wastewater with high adsorption capacity and recovery.

通过聚乙烯醇（PVA）和丙烯酰胺（AAm）的γ辐射共聚合成的PVA-co-AAm / TiO ₂ / SiO ₂纳米复合吸附剂，掺入TiO ₂ / SiO ₂纳米粉，旨在增强碱性蓝3染料（BB3）的去除）和水溶液中的Cu（II）离子。纳米复合材料的性能通过不同的技术进行了分析。FTIR结果表明成功掺入了纳米颗粒，并使PVA和AAM共聚。SEM / EDS确认了属于C，O，Si和Ti的峰。TEM研究表明TiO ₂ / SiO ₂纳米粒子具有良好的分散性，均匀且均一的形状，粒径为60–70 nm。XRD数据指定了TiO _2的特征衍射峰，并且计算的晶体尺寸为43nm。吸附结果证实，PVA-co-AAm / TiO ₂ / SiO ₂纳米复合材料对BB3和Cu（II）的吸附能力均是PVA-co-AAm-30的三倍。以30 kGy（PVA-co-AAm / TiO ₂ / SiO ₂ -30）制备的纳米复合材料具有高溶胀，凝胶化和最高吸附能力，因此被选作批量实验的最佳吸附剂。使用0.4 g PVA-co-AAm / TiO ₂ / SiO ₂可获得最佳吸附-30吸附剂用量。BB3和Cu（II）的吸附量分别为140.9和190.3 mg / g，在7 h和6 h，pH 11和pH 6，初始浓度分别为150和200 mg / L时，去除率分别为93.5和95.2％，分别。BB3或Cu（II）的吸附是吸热的和自发的，通过拟二级吸附动力学和拟合的Langmuir等温线很好地描述了该吸附。结果表明，所合成的PVA-co-AAm / TiO ₂ / SiO ₂纳米复合材料可作为有效的吸附剂，对废水中的BB3和Cu（II）离子进行吸附，具有较高的吸附能力和回收率。