Preparation and Mechanism of Dickite-cesium Acetate Intercalated Complex
Cesium acetate (CsAc) has been successfully intercalated into dickite through mechanical milling method. The forming process of the compounds was studied by means of thermo-gravimetric (TG), differential thermal analysis(DTA), X-ray diffraction (XRD), infrared spectroscopy (IR) and field emission sc...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | zho |
| Published: |
Journal of Materials Engineering
2018-07-01
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| Series: | Cailiao gongcheng |
| Subjects: | |
| Online Access: | http://jme.biam.ac.cn/CN/Y2018/V46/I7/76 |
| Summary: | Cesium acetate (CsAc) has been successfully intercalated into dickite through mechanical milling method. The forming process of the compounds was studied by means of thermo-gravimetric (TG), differential thermal analysis(DTA), X-ray diffraction (XRD), infrared spectroscopy (IR) and field emission scanning electron microscope (FESEM). The XRD pattern shows that the basal spacing of dickite (<i>d</i><sub>(002)</sub>) is increased from 0.72nm to 1.42nm, which proves that cesium acetate is successfully intercalated into the interlayer of dickite. The new band at 360cm<sup>-1</sup> suggests that cesium acetate possibly forms hydrogen bond with the inner surface hydroxyls of dickite. The new band 3548 cm<sup>-1</sup> reveals H<sub>2</sub>O is also inserted into the interlayer during the dickite molecules intercalation. TG-DTA results show that the intercalated compound can exist stably below 110℃, the temperature of de-hydroxylation for the intercalated complex sharply is decreased from 597.6℃ to 418℃. FESEM images show clear dickite structure, and the morphology of dickite after intercalation does not change a lot. From theoretical calculation, it is deduced that cesium acetate molecule and water molecule are bond together, and are intercalate into the interlayer of dickite, and form hydrogen bonds with the inner surface hydroxyls of dickite, and a mechanism model of cesium acetate intercalating into dickite is established. |
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| ISSN: | 1001-4381 1001-4381 |