In the present study, the synthesis of a novel tri-metal nanocomposite (TMNC) Mg-Al-Fe using co-precipitation method was optimized by a 3³ factorial design. The physicochemical properties were characterized by XRD, FESEM, EDX, HRTEM, FTIR, BET, and TGA. The influence of process parameters viz. molar ratio of bivalent to trivalent metals, the molar ratio of trivalent metals, and the calcination temperature on the preparation of TMNC targeting fluoride adsorption was also elucidated. The substantial variation of adsorption capacity from 1.20–4.98 mg/g established the vital role of optimum molar ratio and calcination temperature in the preparation of TMNC. It was observed that the adsorbent with bivalent to trivalent metal molar ratio of 5 and calcined at 400 °C exhibits maximum Langmuir adsorption capacity of 90.68 mg/g. The high surface area and mesoporous structure of the mixed metal nanocomposite obtained at optimum preparation conditions play an essential role in enhancing its fluoride removal capability.

在本研究中，一种新型的三金属纳米复合物的合成中使用共沉淀法（TMNC）的Mg-Al-Fe系用3优化³析因设计。通过XRD，FESEM，EDX，HRTEM，FTIR，BET和TGA表征其理化性质。工艺参数的影响。还阐明了二价金属与三价金属的摩尔比，三价金属的摩尔比以及在以氟化物吸附为目标的TMNC制备中的煅烧温度。吸附容量在1.20-4.98 mg / g之间有很大变化，这确立了最佳摩尔比和煅烧温度在TMNC制备中的重要作用。观察到二价与三价金属摩尔比为5且在400°C下煅烧的吸附剂具有90.68 mg / g的最大Langmuir吸附容量。