| 带相反电荷无机纳米片胶体稳定存在的溶剂 |
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| 引用本文： | 赵玉双,马辉,马淑兰,杨晓晶.带相反电荷无机纳米片胶体稳定存在的溶剂[J].北京师范大学学报(自然科学版),2009,45(4). |
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| 作者姓名： | 赵玉双 马辉 马淑兰 杨晓晶 |
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| 作者单位： | 1. 北京师范大学化学学院,100875,北京
2. 北京师范大学分析测试中心,100875,北京 |
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| 基金项目： | 国家自然科学基金资助项目(20671012) |
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| 摘 要： | 为了探讨采用不同溶剂所获得的带正、负电荷无机纳米片均能以稳定胶体状态存在的溶剂,用熔融盐法和均匀沉淀法分别合成带负电及正电层板的层状化合物birnessite型锰酸钠和CoAl层状双金属氢氧化物LDH,并对它们进行离子交换、剥离而制得在四甲基胺离子水溶液和甲酰胺中稳定存在的MnO2和CoAl-LDH纳米片.研究发现,甲酰胺可作为此2种纳米片胶体稳定存在的溶剂.
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| 关 键 词： | 层状化合物 剥离 无机纳米片 胶体 组装溶剂 |
SOLVENTS FOR BOTH THE OPPOSITELY-CHARGED INORGANIC NANOSHEETS TO EXIST STABLY AS A COLLOIDAL SUSPENSION |
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| ZHAO Yushuang,MA Hui,MA Shulan,YANG Xiaojing.SOLVENTS FOR BOTH THE OPPOSITELY-CHARGED INORGANIC NANOSHEETS TO EXIST STABLY AS A COLLOIDAL SUSPENSION[J].Journal of Beijing Normal University(Natural Science),2009,45(4). |
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| Authors: | ZHAO Yushuang MA Hui MA Shulan YANG Xiaojing |
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| Abstract: | The aim of the present work is to find a solvent in which opposite charged inorganic nanosheets can stably exist as a colloidal suspension. Two types of nanosheets,negatively-charged manganese oxides,and positively-charged Co-Al layered double hydroxide (LDH),were prepared from the precursors of sodium-form birnessite-type manganese oxide and CO2-3 type LDH,respectively. The former was obtained by Na+/H+ ion-exchange,TMA+(tetramethylammonium ions)-intercalation followed by water-washing on Na-birnessite syn... |
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| Keywords: | layered compounds exfoliation inorganic nanosheets colloid reassembly solvent |
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