摘要
羟基磷灰石具有特殊的晶体结构,对二价的重金属离子有很强的结合力,是一种可用于环境污染治理的新型功能性材料。它可有效地吸附去除水中的Pb2+,Cd2+,Cu2+,Zn2+,Co2+,Ni2+等重金属离子,但其粉体的结构却限制了它在水环境中的实际应用。随着纳米技术、复合材料技术的发展,在羟基磷灰石的基础上开发出的具有高效吸附性能或分离特性的新型材料在重金属吸附研究中显示了潜在的优势。本文综述了羟基磷灰石及其复合材料对水中重金属去除方面的研究进展,探讨了它对重金属吸附机理,并对羟基磷灰石进一步的研究提出了展望。
With the particular crystal structure,hydroxyapatite（HAp） has the highly marked ability to adsorb bivalent heavy metal ions and can be used as a novel functional material for the treatment of the environmental pollution.It had found that HAp can effectively adsorb Pb2＋,Cd2＋,Cu2＋,Zn2＋,Co2＋,Ni2＋.However,it is existed by the form of powder which limits its applications under aqueous condition.Fortunately,new materials based on HAp with higher adsorptive ability and the characteristic of separation have been developed.Potential superiority of these materials has been confirmed in the adsorption of heavy metals.The progress of HAp and its composites as adsorbents for the removal of heavy metals from aqueous solution was summarized.The mechanisms of adsorption were discussed,and the prospect in this field was also proposed.
出处
《化学通报》
CAS
CSCD
北大核心
2013年第5期405-410,共6页
Chemistry
关键词
羟基磷灰石
重金属
吸附
Hydroxyapatite
Heavy metals
Adsorption
