Bimetallic oxides nanocomposites always exhibited the better phosphate capacities than those monometallic oxides samples. Herein, the high carbohydrate-content biomaterials, shaddock peels (SP), were used as the bio-host for supporting the bimetallic oxides, zirconium (Zr) and lanthanum (La) hydroxides, forming the SP-Zr-La composites. Phosphate adsorption properties as well as stability of the novel composites were evaluated. The SP-Zr-La composites indicated that some rod-like or amorphous nanoparticles with sizes of 20–150 nm were anchored inside the SP, which exerted more available interface interactions toward the adsorbed ions. The Zr-La species were pH-sensitive and adsorption capacity of phosphate by SP-Zr-La was increased with the rise in temperature. As the molar ratio of accompanying ions/phosphate was increased from 0 to 10 times, the SP-Zr-La was observed with the adsorption loss of 27.2–36.7%. Whereas the adsorption loss of cationic SP (grafted with quaternary ammonium groups) was calculated up to 86.2–91.6%; this indicated the more feasibility of SP-Zr-La in real applications. In addition, the stability of impregnated Zr and La species in SP-Zr-La was greatly improved by the bio-carrier through the “shielding effect” in a low HA surrounding.

双金属氧化物纳米复合材料始终显示出比那些单金属氧化物样品更好的磷酸盐吸收能力。在本文中，高碳水化合物含量的生物材料沙多皮（SP）被用作支撑双金属氧化物，锆（Zr）和镧（La）氢氧化物的生物基质，形成SP-Zr-La复合材料。评价了磷酸盐吸附性能以及新型复合材料的稳定性。SP-Zr-La复合材料表明，一些尺寸为20-150 nm的棒状或无定形纳米粒子被固定在SP内，从而对被吸附的离子产生更多的可用界面相互作用。Zr-La物种对pH敏感，并且SP-Zr-La对磷酸盐的吸附能力随温度的升高而增加。随着伴随离子/磷酸盐的摩尔比从0增至10倍，SP-Zr-La的吸附损失为27.2–36.7％。阳离子SP（与季铵基团接枝）的吸附损失经计算可达86.2–91.6％；这表明SP-Zr-La在实际应用中更具可行性。此外，通过生物载体，通过在低HA周围的“屏蔽效应”，大大提高了SP-Zr-La中浸渍Zr和La物种的稳定性。