![]() ![]() ![]() These guest molecules increase the basal spacing of kaolinite which allows other molecules enter the interlayer of kaolinite to form diverse functional intercalation composites. Several guest molecules such as dimethyl sulfoxide (DMSO), N-methyl formamide (NMF), urea (U), potassium acetate (KAc) and hydrazine can directly intercalate kaolinite 11. Kaolinite, a 1:1 type layered aluminosilicate, has received considerable attentions due to its natural “Janus” structure 7, 8, 9, 10. Intercalation reaction of natural layered minerals is a well-known method for preparing hybrid materials in a nanoscale 4, 5, 6. ![]() Researches on organic-inorganic hybrid materials have been thriving over the past few years because these materials combined the structural, physical and chemical properties of both inorganic host materials and organic guest species 1, 2, 3. Furthermore, the resulting material could be successfully used to prepare kaolinite nanoscrolls in high yield. Moreover, methanol used in this process could be recycled. The results showed that the DMSO in kaolinite could be completely displaced by methanol in this process and the preparation of KMe could be completed in 8 hours, which was far faster than the reported methods. The formation process of kaolinite/methanol intercalation composite was studied by X-ray diffraction (XRD) and infrared spectroscopy (IR). In this study, Soxhlet extractor was introduced to synthesize an intercalation composite and KMe was efficiently synthesized in a Soxhlet extractor through a continuous displacement process by using kaolinite/DMSO intercalation composite (KD) as a precursor. However, synthesis of KMe is a time and methanol dissipative process and the complexity of this process also limits its further applications. Kaolinite/methanol intercalation composite (KMe) is a key precursor for preparing clay-based inorganic/organic hybrid materials and kaolinite nanoscrolls. ![]()
0 Comments
Leave a Reply. |
Details
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |