研究以高岭石为基料的新型有机-无机杂化铁电材料具有重要的理论和现实意义

Study kaolinite new organic-based material - inorganic hybrid ferroelectric material has an important theoretical and practical significance. In the heterocyclic compound 2-carboxylic acid as the object pyrazine, kaolinite prepared in the autoclave / pyrazine-2- carboxylic acid intercalation compound. By XRD, IR and TG products were characterized, and tested its ferroelectric properties, may be obtained by optimizing the structure of the intercalation CASTEP program. The results show that 2-pyrazine carboxylic acid molecules from 160 ℃ pressurized system can be intercalated in kaolinite to 10H, extended interlayer spacing to 1.39nm, intercalation rate of 42.73%. Guest molecule is oriented in a nearly vertical manner between kaolinite resulting intercalation compound exhibits ferroelectricity at room temperature under an applied electric field. In addition, the intercalation compound having a certain thermal stability (

It is of great theoretical and practical significance to study the new organic-inorganic hybrid ferroelectric material based on kaolin stone. With the heterocyclic compound 2-pyridine acid as the object, the kaolin stone/2-2-pyridine intric acid in the autoclave was prepared. The product was characterized by XRD, IR and TG, and its ferroelectric properties were tested, and the possible layer structure was obtained through the optimization of the CASTEP program. The results showed that the 2-pyridine acid molecule silo satein to 10h in the kaolin stone layer in the 160 oC self-pressurization system, the layer spacing was extended to 1.39nm, and the interpolation rate reached 42.73%. The object molecules are directed almost vertically between the high-level stone layers, causing the intubation compound steamed to show room temperature ferrous electricity under the action of the applied electric field. In addition, the layer compound has a certain thermal stability (

It is of great theoretical and practical significance to study new organic-inorganic hybrid ferroelectric materials based on kaolinite. Kaolinite / 2-pyrazine carboxylic acid intercalation compound was prepared in autoclave with 2-pyrazine carboxylic acid as the guest. The product was characterized by XRD, IR and TG, and its ferroelectric properties were tested. The possible intercalation structure was obtained by the optimization of CASTEP program. The results showed that 2-pyrazine carboxylic acid molecules could be intercalated into kaolinite layer for 10 hours in a self pressurized system at 160 ℃, and the intercalation rate reached 42.73%. The guest molecules are oriented almost vertically between the kaolinite layers, resulting in the intercalation compounds showing room temperature ferroelectricity under the action of external electric field. In addition, the intercalation compound has certain thermal stability（<br>