The synthesis solution with molar ratio of Zn2+ : 2-methylimidazole : H O = 1 : 70 : 1238 was pre- 2 pared as follows. Firstly, 1.17 g Zn(NO ) 6H O (Sigma-Aldrich) 3 2 2 was dissolved in 8 g deionized (DI) water. Secondly, 22.70 g Advanced Membrane and Porous Materials ...
It was found that, after the synthesis of ZIF-8, with the increased washing times, the positive surface potentials of ZIF-8 particles decrease, resulting in increased aggregate size. The ZIF-8 dispersions washed for zero times are very stable in water, and there is no settlement even after ...
synthesis method using water as a solvent has an advantage of avoiding large organic solvent molecules such as dimethyl formamide DMF or methanol to be trapped inside the pores of ZIF 8 after the synthesis thereby reducing the acces sible surface area 31 In general Zn and Hmim solutions were ...
ZIF-8或ZIF-67衍生催化剂活化过硫酸盐去除水体 难降解有机污染物研究 摘要 抗生素大量使用引起的环境污染日益严重。高级氧化工艺(AOPs)是去除难降 解污染物的常用策略,设计能够高效活化过硫酸盐以氧化有机污染物的非均相催 化剂是AOPs中必要的。本文以沸石咪唑酯框架材料(ZIFs)为前驱体,掺杂金属 ...
organic polymer with mesoporosity (named MT-MCTP) was prepared for the first time via ZIF-8 (a zeolitic imidazolate framework, comprised of ZnN4 tetrahedral units interconnected by methyl imidazolate linkers) templated synthesis of microporous triazine polymer (MCTP) and subsequent removal of ZIF-8....
ofNPCsinthefieldofwaterpollutioncontrol.Thefollowingistheresultsofthisstudy. (1)Inthisstudy,threedifferent-sizedZIF-8werepreparedbycontrollingthesynthesis conditions.Bychangingthezincsaltspeciesandthereactiontemperature,thecrystalsizesof thethreeZIF-8crystalswerechangedfromsmalltolargeby50nm,500nmand1μm (herei...
第二,反应速率慢,Li等人(Zeolitic imidazolate framework-8 with high efficiency in trace arsenate adsorption and removal from water)采用ZIF-8吸附饮用水中的五价砷酸盐时发现吸附平衡时间大学需要12h,意味着在实际应用中需要保证12小时以上的水力停留时间,池容超过数万立方,这是显然无法满足的。
So far, most ZIF-8 particles have been reported synthesized by various solvents such as methanol (MeOH), ethanol, diethyl formamide, and water [34]. Few researchers have synthesized ZIF-8 in a mixed solvent. Numerous studies have investigated the impact of various synthesis conditions on the ...
The growth and morphology of ZIF-8 primarily depend on the solubility, polarity, and viscosity of the solvents used. Studies have identified three key solvents water, methanol, and DMF as critical factors in the synthesis process. The choice of solvent affects the crystallization behaviour ...
ControlledSynthesisofMicro-nanoCrystalsofZIF-8 Han Wenhua Liu Shixin*Xing Tiantian*Chen Jinxi* (Nanjing Norvie Detection Technology Co. Ltd.210007, Jiangsu Nanjing 210007;*School of Chemistry and Chemical Engineering,SoutheastUniversity, Jiangsu Nanjing 211189) ...