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| 摘要: |
| 采用共沉淀法和水热法制备了用于吸附金属离子Ni2+的羟基磷灰石(HA),通过XRD,TEM,FTIR和BET对其物相组成和形貌结构进行了分析,并测定了其比表面积.结果表明:共沉淀法制备的HA的结晶度低、比表面积大、表面缺陷较多;共沉淀法制备的HA对Ni2+的吸附量远大于水热法制备的HA,其饱和吸附量为60.57 mg/g,且吸附之后HA与Ni2+并没有发生各种溶解沉淀和进入晶格的化学反应,脱附容易发生,因而HA有望成为建材行业回收镍金属的高效吸附剂. |
| 关键词: 建筑材料 镍 羟基磷灰石 吸附作用 |
| DOI： |
| 分类号:TB302 |
| 基金项目:国家自然科学基金，上海市科委纳米基金? |
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| Study on Hydroxyapatite Adsorption for Metal Ions Ni~(2+) |
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WANG De-ping ZHANG Jun YAO Ai-hua HUANG Wen-hai
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| Abstract: |
| Hydroxyapatite(HA) prepared by co-precipitation and hydrothermal methods was used for the adsorption of metal ions Ni~(2+).Their phase compositions and crystal structures were analyzed by XRD,TEM and FTIR,the specific surface area was also determined by BET.The results show that the HA prepared by co-precipitation exhibits poor crystalline and high specific surface area,maximum adsorption capacity for Ni~(2+)(60.57 mg/g),which was much higher than that of the HA prepared by hydrothermal method.The work also... |
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