摘要
以CTAB为表面活性剂、正丁醇为助表面活性剂、正辛烷为油相,通过反相微乳液法制备了纳米级ZIF-8晶体。研究了H_2O/CTAB摩尔比、2Ml/Zn^(2+)摩尔比和合成时间对制备ZIF-8晶体形貌及尺寸大小的影响。结果表明,在H_2O/CTAB摩尔比为30、2Ml/Zn^(2+)摩尔比为4、反应时间为1 h条件下,所制得的ZIF-8晶体形貌规则呈球状,结晶度高,粒径大小均一,约为100 nm;并随着2Ml/Zn^(2+)摩尔比由3.5增加为8时,ZIF-8晶体尺寸逐渐降低,由120 nm下降为50 nm;此外,ZIF-8纳米晶体尺寸及形貌不随反应时间的延长而发生明显变化。
ZIF-8 nanocrystals are prepared through the reverse microemulsion method using CTAB as an anionic surfactant,n-butanol as a cosurfactant and n-octane as an oil phase.The effects of molar ratio of H2O/CTAB,molar ratio of 2 Ml/Zn^2＋and synthetic time on the morphology and size of the as-synthesized ZIF-8 crystals are systematically investigated.It is found that the prepared ZIF-8 crystal exhibits sphere-like morphology,high crystallinity,uniform-sized particles with diameter about 100 nm when the molar ratio of H2O/CTAB is 30,the molar ratio of 2 Ml/Zn^2＋is 4 and reaction lasts for 1 h.As the molar ratio of 2 Ml/Zn^2＋increases from 3.5 to 8,the size of the as-synthesized ZIF-8 crystals decrease gradually,from 120 nm to 50 nm.Moreover,with the reaction time extending,the morphology and size of ZIF-8 nanocrystals change hardly.
作者
殷慧敏
李良清
李佳佳
丰洒
郭宇
王金渠
YIN Hui-min;LI Liang-qing;LI Jia-jia;FENG Sa;GUO Yu;WANG Jin-qu(National Center for Quality Supervision and Testing of Fertilizers（Shandong）,Linyi Institute of Product Quality Supervision ＆ Inspection,Linyi 276007,China;Collaborative Innovation Center of Fine Chemical and Materials Technology,School of Chemistry and Chemical Engineering,Huangshan University,Huangshan 245041,China;School of Chemical and Environmental Engineering,Liaoning University of Technology,Jinzhou 121001,China;Institute of Adsorption and Inorganic Membrane,State Key Laboratory of Fine Chemicals,Dalian University of Technology,Dalian 116024,China)
出处
《现代化工》
CAS
CSCD
北大核心
2018年第10期175-179,共5页
Modern Chemical Industry
基金
安徽省重点研究与开发计划项目(1804a09020072)
安徽省自然科学基金项目(1808085QB51)
安徽高校自然科学研究项目(KJ2017A397,KJHS2018B07)
黄山市科技计划项目(2017KG-07)
国家级大学生创新创业训练项目(201710375003,201710375023)
安徽省大学生创新创业训练项目(201710375050)
