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| Preparation and Delaminating of Glycine-Mg3Al LDHs and its Intercalation Compounding with Montmorillonite |
| Xiaoqian MA,Jinglong ZHOU,Nan LU,Xu WU,Xianmei XIE |
| College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024 |
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Cite this article:
Xiaoqian MA,Jinglong ZHOU,Nan LU,Xu WU,Xianmei XIE. Preparation and Delaminating of Glycine-Mg3Al LDHs and its Intercalation Compounding with Montmorillonite. Chinese Journal of Materials Research, 2014, 28(2): 100-106.
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Abstract Glycine(Gly)was intercalated into Mg3Al layered double hydroxides(Gly-Mg3Al LDHs)by coprecipitation method. The delaminating of Gly-Mg3Al LDHs in aqueous solution of pH=3~4 was realized by making use of the isoelectric point of Gly. Then Mg3Al LDHs/montmorillonite layered composite was gained through inserting LDHs sheets into montmorillonite. The composite was characterized by X-ray diffraction (XRD), Fourier transform infrared (FT-IR), electrophoresis apparatus and N2-adsorption/desorption measurements. The results show that the formed Gly-Mg3Al LDHs possesses well-defined crystallographic structure. When the raw material ratio is 0.5 (nGly:nNO3-=1:2), the obtained Gly-Mg3Al LDHs exhibits the best performance of delaminating, while the zeta potential of the subsequence colloidal particles is between 35mV and 40mV. Additionally, the translucent colloidal solution may be kept stably for 72h.The interlayer space of the layered composite is 1.44 nm, which is the total thickness of LDHs sheet and montmorillonite sheet. The results prove that LDHs sheets and montmorillonite sheets are layer by layer staggered.
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Received: 31 May 2013
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| Fund: *Supported by National Natural Science Foundation of China No. 50872086 and the Natural Science Foundation of Shanxi Province No. 2012021006-3. |
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