In this work, Mg/Al layered double hydroxides embedded phosphorylated cellulose microspheres (Mg/Al LDH@PCMs) were prepared first with solid-phase phosphorylation on CMs then in situ nano-assembly between Mg²⁺, Al³⁺ and phosphate groups. Hence the synthesis degree of Mg/Al LDH was enhanced. The obtained Mg/Al LDH@PCMs were characterized by scanning electron microscopy (SEM), specific surface area test (BET), Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), ζ potential, X-ray electron energy (XPS). The novel in situ nano-assembly method provided improved Mg/Al LDH load without compromising the porous structure of CMs, making Mg/Al LDH@PCMs suitable for water treatment. The Mg/Al LDH@PCMs adsorbed tetracycline hydrochloride (TC) with a kinetic pattern of pseudo second-order kinetic model, while isothermally fitted with the Freundlich isotherm model. The maximum theory adsorption capacity of Mg/Al LDH@PCMs q_m was 25.107 mg g⁻¹ with the Gibbs free energy ∆G = 7.523 kJ mol⁻¹ under 298 K. The TC removal mechanism was deeply investigated via characterization results and also the batch experimental results, it was inferred that electrostatic attraction between LDH particles and the anion species mainly dominated the adsorption process. These properties make Mg/Al LDH@PCMs have a wide application prospect in the water purification field.

在这项工作中，首先制备了Mg / Al层状双氢氧化物包埋的磷酸化纤维素微球（Mg / Al LDH @ PCMs），然后在CM上进行固相磷酸化，然后在Mg 2 ⁺，Al ³⁺之间原位纳米组装和磷酸基团。因此，提高了Mg / Al LDH的合成度。通过扫描电子显微镜（SEM），比表面积测试（BET），傅立叶变换红外光谱（FT-IR），X射线衍射（XRD），ζ电势，X射线对所得的Mg / Al LDH @ PCM进行表征。电子能量（XPS）。这种新颖的原位纳米组装方法在不损害CMs的多孔结构的情况下提供了改进的Mg / Al LDH负载，从而使Mg / Al LDH @ PCMs适用于水处理。Mg / Al LDH @ PCMs吸附具有模拟二级动力学模型的动力学模式的四环素盐酸盐（TC），而等温拟合Freundlich等温模型。带有吉布斯自由能的Mg / Al LDH @ PCMs q _m的最大理论吸附容量为25.107 mg g ^-1∆G  = 7.523 kJ mol ^-1在298 K下。通过表征结果和批量实验结果深入研究了TC的去除机理，推断LDH颗粒与阴离子之间的静电吸引作用主要是吸附过程。这些特性使得Mg / Al LDH @ PCMs在水净化领域具有广阔的应用前景。