中文摘要：

通过悬浮粒子浸涂法将合成的γ-Al2O3纳米粒子固载于316L多孔不锈钢表面以吸附水溶液中的Cr（Ⅵ）和Cd（Ⅱ）.扫描电镜（SEM）和X射线衍射（XRD）测试结果表明,γ相的Al2O3纳米粒子均匀地涂在了316L多孔不锈钢基体上,膜体表面沉积厚度约为20μm.该膜对单一Cr（Ⅵ）和Cd（Ⅱ）吸附的最佳pH分别为3.0-4.0和8.0-9.0,吸附均符合动力学准二级模型和Langmuir吸附等温模型,最大吸附量分别为0.603mg·g^-1和0.399 mg·g^-1.本研究可为水体中的高毒性重金属Cr（Ⅵ）和Cd（Ⅱ）去除提供一定的理论和技术参考.

英文摘要：

γ-Al2O3 nanoparticles were immobilized onto 316 L porous stainless steel（ PSS） tube for removal of chromium（ Cd（ Ⅵ）） and cadmium（ Cd（ Ⅱ）） in aqueous solution. Scanning electron microscope（ SEM） and X-ray diffraction（ XRD） analysis results revealed that γ-Al2O3 nanoparticles have uniformly coated on 316 L PSS with a thickness of - 20 μm. Optimium pH for the adsorption of Cr（ Ⅵ） and Cd（ Ⅱ） were 3.0 - 4.0 and 8. 0 - 9. 0respectively. The adsorption data was well fitted by pseudo-second-order model and Langmuir adsorption isotherm model,and the calculated maximum adsorption capacity for Cr（ Ⅵ） and Cd（ Ⅱ） was respectively 0.603 mg·g^-1 and 0.399 mg·g^-1. This study may provide theoretical and technical reference for removal of highly toxic heavy metals Cr（ Ⅵ） and Cd（ Ⅱ） from water.