MIL-101(Fe)/sugarcane bagasse (SCB) with high adsorption capacity and selectivity toward phosphate was prepared through in-situ synthesis method. Effects of bagasse size on the morphology and performances of the composites were investigated, and adsorption behavior and mechanism of phosphate on the composite prepared at the optimum bagasse size were studied. Results showed that composite prepared with bagasse size of 200–300 mesh (MIL-101(Fe)/SCB₃) showed much higher adsorption capacity than SCB, blank MIL-101(Fe) and the composites prepared with the other bagasse size, which was due to the more positively charged surface and the more exposed adsorption active sites including FeOH_x and exchangeable Cl⁻. Co-ions experimental results illustrated that the as prepared MIL-101(Fe)/SCB₃ showed high adsorption affinity toward phosphate, and the common cationic and anionic ions exhibited negligible effects on phosphate adsorption capacity and rate. The optimum pH range for phosphate adsorption on MIL-101(Fe)/SCB₃ was from 3.0 to 10.0, and in this range Fe release was less than 0.03%. Adsorption mechanism showed that phosphate was adsorbed mainly through electrostatic force, ion-exchange, and inner-sphere surface complex. Simulated wastewater treatment experiment showed that MIL-101(Fe)/SCB₃ could efficiently remove phosphate from aqueous solution.

通过原位合成法制备了具有高吸附能力和对磷酸盐选择性的MIL-101（Fe）/蔗糖蔗渣（SCB）。研究了蔗渣尺寸对复合材料形态和性能的影响，研究了在最佳蔗渣尺寸下制备的复合材料对磷酸盐的吸附行为和机理。结果表明，甘蔗渣尺寸为200-300目（MIL-101（Fe）/ SCB ₃）的复合材料的吸附能力远高于SCB，空白MIL-101（Fe）和其他甘蔗渣尺寸的复合材料。这是由于表面带正电且暴露的吸附活性位点（包括FeOH _x和可交换的Cl- ^）更多。钴离子实验结果表明，所制备的MIL-101（Fe）/ SCB ₃对磷酸盐具有很高的吸附亲和力，而常见的阳离子和阴离子对磷酸盐的吸附能力和速率的影响可忽略不计。磷酸盐在MIL-101（Fe）/ SCB ₃上吸附的最佳pH范围为3.0至10.0，在此范围内，Fe的释放量小于0.03％。吸附机理表明，磷酸盐主要通过静电力，离子交换和内球表面配合物吸附。模拟废水处理实验表明，MIL-101（Fe）/ SCB ₃可以有效去除水溶液中的磷酸盐。