Green synthesis of metal nanoparticles using plant extracts as an effective bio-reducing reagent has attracted considerable attention. Fe/Cu nanocomposites synthesized by extracts of sweet potato leaves served to remove basic magenta (BM) from aqueous solution. The adsorption operation conditions of BM on Fe/Cu nanocomposites were optimum by Box-Behnken design (BBD) model of response surface methodology (RSM). The adsorption equilibrium data were well described by the Sips and Redlich-Peterson models. The thermodynamic studies showed that the adsorption process was endothermic and spontaneous. The maximum adsorption capacity from the Sips model was 235.92 mg/g at 298 K, which indicated that Fe/Cu nanocomposites had potential application in wastewater treatment. As indicated by pseudo-second order kinetics model, the adsorption of BM onto Fe/Cu nanocomposites could be achieved through the complexation, H-bonding, π-π adsorbate-adsorbent interaction, and electrostatic interaction at different pH values.

使用植物提取物作为有效的生物还原剂绿色合成金属纳米颗粒引起了广泛关注。由甘薯叶提取物合成的 Fe/Cu 纳米复合材料用于从水溶液中去除碱性品红色 (BM)。通过响应面法（RSM）的Box-Behnken设计（BBD）模型，BM在Fe/Cu纳米复合材料上的吸附操作条件是最佳的。Sips 和 Redlich-Peterson 模型很好地描述了吸附平衡数据。热力学研究表明吸附过程是吸热和自发的。Sips 模型在 298 K 下的最大吸附容量为 235.92 mg/g，这表明 Fe/Cu 纳米复合材料在废水处理中具有潜在的应用价值。如伪二级动力学模型所示，π-π吸附质-吸附剂相互作用，以及不同 pH 值下的静电相互作用。