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OALib Journal期刊
ISSN: 2333-9721
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镁铝金属氧化物对共存cu2+/cr(vi)的协同去除效应*
Keywords: 无机非金属材料,水滑石,重金属离子,cu2+/cr(vi),jahn-teller效应
Abstract:
？以mgal-co32–水滑石(ldh)焙烧产物(ldo)为重金属离子去除剂，在单一cu2+、cr(vi)体系和cu2+/cr(vi)共存体系中探究了ldo对重金属离子的去除性能，并结合对金属-ldo复合体的xrd、ft-ir和sem表征阐明了双金属(cr(vi)阴离子+cu2+阳离子)在ldo上的去除机理。结果表明，cr(vi)和cu2+在ldo上的吸附表现为多重相互作用的协同吸附效应。除了cu2+的“jahn-teller”效应和氢键协同多体效应外，cu2+-cro42–-ldo体系还发生静电作用、水合作用、配位作用以及共沉淀和继沉淀作用，形成了mg-al-cu三元复合体。
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