In this work, the mesoporous iron-aluminum (Fe-Al) bimetallic particles were synthesized and employed for the removal of As(III) from aqueous solution. The manufacturing method of Fe-Al bimetallic particles was optimized. Through exploring the proportion and the order added of Fe-Al components, conclusion can be got that the best molar ratio is nFe:nAl₂O₃ = 1:0.2. The Fe-Al bimetallic particles were characterized by the X-ray diffraction (XRD), scanning electron microscopy (SEM), X-ray photoelectron spectroscope (XPS) and Fourier transform infrared spectrum (FTIR). The ability of removing As(III) from aqueous solution was investigated at different adsorption conditions (e.g., temperature, pH value, dosage and adsorption time). The absorption efficiency of the composite materials in alkaline solution was higher than that in the acidic solution. Furthermore, the As(III) removal mechanism was also investigated, indicated that the removal of As(III) is a complex process including surface adsorption, oxidation and co-precipitation. The relative good As(III) removal capability of the simple synthetic of Fe-Al bimetallic particles exhibited its great potential as an effective and environmental friendly agent for As(III) removal from water.

在这项工作中，合成了中孔铁铝（Fe-Al）双金属颗粒，并用于从水溶液中去除As（III）。优化了Fe-Al双金属颗粒的制备方法。通过研究Fe-Al组分的比例和添加顺序，可以得出最佳摩尔比为nFe：nAl ₂ O _3的结论。 = 1：0.2。通过X射线衍射（XRD），扫描电子显微镜（SEM），X射线光电子能谱仪（XPS）和傅里叶变换红外光谱（FTIR）对Fe-Al双金属颗粒进行了表征。研究了在不同的吸附条件（例如温度，pH值，剂量和吸附时间）下从水溶液中去除As（III）的能力。复合材料在碱性溶液中的吸收效率高于酸性溶液。此外，还研究了As（III）的去除机理，表明As（III）的去除是一个复杂的过程，包括表面吸附，氧化和共沉淀。