Cryogels based on microfibrillar cellulose (MFC) and reinforced with chitosan to endow water resistance were loaded with magnetite nanoparticles (MNPs) and characterized by TEM, XRD, and TGA. The MNP-loaded cryogels were tested for heavy metal ion removal from aqueous matrices. The adsorption capacity under equilibrium conditions for Cr(VI), Pd(II), Cd(II), and Zn(II) was measured to be 2755, 2155, 3015, and 4100 mg/g, respectively. The results indicate the potential of the introduced bicomponent cryogels for nanoparticle loading, leading to a remarkably high metal ion sorption capacity.

中文翻译：

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在基于微原纤维纤维素的冷冻凝胶中负载铁 (II, III) 氧化物纳米颗粒用于重金属离子分离

基于微原纤维纤维素 (MFC) 并用壳聚糖增强以赋予防水性的冷冻凝胶装载有磁铁矿纳米颗粒 (MNP)，并通过 TEM、XRD 和 TGA 进行表征。测试了加载 MNP 的冷冻凝胶从水性基质中去除重金属离子的能力。平衡条件下对 Cr(VI)、Pd(II)、Cd(II) 和 Zn(II) 的吸附容量分别测量为 2755、2155、3015 和 4100 mg/g。结果表明引入的双组分冷冻凝胶具有用于纳米颗粒负载的潜力，从而导致非常高的金属离子吸附能力。