Metal–organic frameworks (MOFs) are a prominent class of materials due to their large surface area and customized structures. This gives them specificity and high adsorption capacity while they lack mechanical strength and reusability. Integrating MOFs with polysaccharide matrix may retain MOF characteristics along with imparting structural integrity. In the present study, zirconium MOF-based fenugreek composite (FG/Zr-AIPA) beads were synthesised by a single droplet method and utilised for removal of Cr(VI), Pb(II) and Fe(III) from aqueous solution. The structure, morphology and composition of beads were evaluated by FTIR, XRD, TGA, BET, FESEM, EDX, XPS and zeta potential analysis. Adsorption isotherm, kinetics and thermodynamics were studied for Cr(VI), Pb(II) and Fe(III) adsorption. Adsorption kinetics and isotherm study revealed that all the metal ions were adsorbed through a monolayer chemisorption process. The maximum adsorption capacity was 344.43, 270.02 and 223.21 mg g⁻¹ for Cr(VI), Pb(II) and Fe(III), respectively, based on the Langmuir isotherm study. The thermodynamics study revealed that the interaction between the metal ions and the composite beads was spontaneous and endothermic. The FG/Zr-AIPA composite beads exhibited good reusability for the removal of Cr(VI), Pb(II) and Fe(III). The results open new possibilities for the preparation of polysaccharide MOF-based composite beads which exhibit substantial potential for water treatment applications.

金属有机框架（MOF）由于其大表面积和定制结构而成为一类突出的材料。这赋予它们特异性和高吸附能力，但缺乏机械强度和可重复使用性。将 MOF 与多糖基质整合可以保留 MOF 特性并赋予结构完整性。在本研究中，通过单滴法合成了锆MOF基胡芦巴复合材料（FG/Zr-AIPA）珠，并用于去除水溶液中的Cr(VI)、Pb(II)和Fe(III)。通过 FTIR、XRD、TGA、BET、FESEM、EDX、XPS 和 zeta 电位分析评估珠的结构、形貌和成分。研究了 Cr(VI)、Pb(II) 和 Fe(III) 吸附的吸附等温线、动力学和热力学。吸附动力学和等温线研究表明，所有金属离子都是通过单层化学吸附过程吸附的。根据Langmuir等温线研究，对Cr(VI)、Pb(II)和Fe(III)的最大吸附容量分别为344.43、270.02和223.21 mg g ^{-1 。}热力学研究表明，金属离子与复合珠之间的相互作用是自发的、吸热的。 FG/Zr-AIPA 复合珠在去除 Cr(VI)、Pb(II) 和 Fe(III) 方面表现出良好的可重复使用性。这些结果为制备多糖 MOF 基复合珠开辟了新的可能性，该复合珠在水处理应用中表现出巨大的潜力。