| 纺锤形纳米羟基磷灰石的制备及其对重金属离子的脱除性能 |
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| 引用本文： | 娄金婷,康芳,王洁欣.纺锤形纳米羟基磷灰石的制备及其对重金属离子的脱除性能[J].北京化工大学学报(自然科学版),2013,40(4):74-79. |
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| 作者姓名： | 娄金婷 康芳 王洁欣 |
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| 作者单位： | 北京化工大学化学工程学院有机无机复合材料国家重点实验室,北京,100029;北京化工大学化学工程学院有机无机复合材料国家重点实验室,北京,100029;北京化工大学化学工程学院有机无机复合材料国家重点实验室,北京,100029 |
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| 摘 要： | 以立方纳米碳酸钙为模板，通过离子交换法，制备得到了纺锤形纳米羟基磷灰石（HAP）。考察了反应温度、pH值等因素对颗粒制备的影响，得到的较优工艺条件为：在pH=10，反应温度60℃，反应4h的条件下，可制备出纺锤形纳米HAP。所制备的样品由HAP晶须排列构成，粒径在150~200nm，形貌良好且分散均一。纺锤形纳米HAP的重金属Pb2+脱除实验结果表明，随着pH值的降低和脱除温度的升高，Pb2+的脱除率增加，较优的脱除条件为pH<2.5、脱除温度40℃、搅拌时间60min。在此条件下，Pb2+脱除率大于99.7%。
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| 关 键 词： | 羟基磷灰石 纳米碳酸钙 离子交换法 重金属离子 |
| 收稿时间： | 2013-01-14 |
Preparation of spindle-shape hydroxyapatite nanoparticles for the removal of heavy metal ions |
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| LOU JinTing
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KANG Fang
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WANG JieXin.Preparation of spindle-shape hydroxyapatite nanoparticles for the removal of heavy metal ions[J].Journal of Beijing University of Chemical Technology,2013,40(4):74-79. |
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| Authors: | LOU JinTing KANG Fang WANG JieXin |
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| Institution: | State Key Laboratory of Organic-Inorganic Composites, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China |
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| Abstract: | Spindle-shape hydroxyapatite(HAP) nanoparticles were successfully prepared by an anion-exchange reaction using cubic calcium carbonate nanoparticles as a template and calcium source. The effects of varying the reaction temperature and pH value were investigated. Uniform spindle-shape HAP nanoparticles with a mean size of 150-200nm were obtained under the optimal conditions of pH 10 and temperature of 60℃. The spindle shape HAP nanoparticles were employed for the removal of heavy metal Pb2+ions. The results indicated that the removal efficiency of Pb2+ could reach above 99.7% at an initial Pb2+mass concentration of 5000mg/L. The optimum removal conditions are a pH value of lower than 2.5, a time of 60min, and a temperature of 40℃. |
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| Keywords: | hydroxyapatite cubic calcium carbonate nanoparticles anion-exchange reaction heavy metal ions |
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