二十二酸Langmuir膜诱导KNO_(3)微晶取向生长研究  

Oriented KNO_(3) Microcrystal Controlled by Behenic Acid Langmuir Film

作　　者：王海威[1,2] 张华 杜祖亮[2] WANG Haiwei;ZHANG Hua;DU Zuliang(Science and Technology College of NCHU,Nanchang 330034,China;Key Laboratory of Special Functional Materials of Ministry of Education,Henan University,Kaifeng 475004,China)

机构地区：[1]南昌航空大学科技学院,南昌330034 [2]河南大学特种功能材料教育部重点实验室,开封475004

出　　处：《材料导报》2021年第S01期128-131,共4页Materials Reports

基　　金：国家自然科学基金重点项目(U1604261);江西省教育厅科学技术研究项目(191618)。

摘　　要：结合仿生合成的方法,采用二十二酸(BA)Langmuir膜为分子模板,利用LB技术诱导制备了具有取向性生长的KNO_(3)微晶。XRD分析表明,微晶为KNO_(3)的斜方晶系结晶,且沿着(012)晶面取向生长。SEM分析表明,KNO_(3)微晶具有含有正三角形孔隙的正六方形形貌,且随着结晶时间的延长,三角形孔隙逐渐被填满,晶体取向性生长和晶型始终保持不变。实验证明BA Langmuir膜对KNO_(3)微晶的形貌和生长取向性有很好的调控作用。With the orientation of potassium nitrate crystallites were fabricated below a behenic acid monolayer by using biomimetic method.The microstructure and surface topography of the obtained potassium nitrate crystallites were characterized by X-ray diffraction(XRD)and scanning electron microscopy(SEM).XRD data indicate that the microcrystalline is an orthorhombic crystal of potassium nitrate and grows along the(012)crystal plane.The morphology of potassium nitrate microcrystals is hexagonal with regular triangular pores.With the increase of crystallization time,the triangular pores are gradually filled,and the crystal orientation growth and crystal form remain unchanged.The results of characterization indicate that behenic acid Langmuir film can be used as a template to induce and regulate the potassium nitrate crystallites to crystallize with a special growth orientation and complex morphologries.

关 键 词：二十二酸 硝酸钾 取向生长 LANGMUIR膜 

分 类 号：O614.231[理学—无机化学]