应用化学2020，Vol.37Issue(6)：683-694,12.DOI:10.11944/j.issn.1000-0518.2020.06.190330
具有染料选择吸附性的衍生于沸石咪唑酯骨架-67的NiCo-层状双氢氧化物设计与合成
Designed Formation of NiCo-Layered Double Hydroxide Derived from Zeolitic Imidazolate Framework-67 with Selective Dye Adsorption Property
摘要
Abstract
A novel hollow composite of NiCo-layered double hydroxide and zeolitic imidazolate framework-67 (NiCo-LDH@ZIF-67) adsorbent with high adsorption capacity for pollutants , high adsorption selectivity of methyl orange (MO) and great regenerability was synthesized using ZIF-67 as a template.The sample was characterized by using scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), Fourier transform infrared spectrometer ( FT-IR ) , N2 adsorption desorption and X-ray photoelectron spectroscopy ( XPS) .The effect of solution pH , the initial MO concentration and the contact time with the mixture solution on the adsorption property of NiCo-LDH@ZIF-67 was studied.The results indicate that its adsorption kinetics for MO can be well simulated by a pseudo-second-order model and its adsorption isotherm for MO follows the Langmuir equation . The optimized adsorption condition is pH =4, contact time of 15 minutes, and adsorbent dosage of 2400 mg/L.Its maximum adsorption capacity for MO can reach as high as 1766 mg/g and is higher than those reported for all similar adsorbents in the literature.In addition, NiCo-LDH@ZIF-67 can selectively adsorb MO from a mixed solution of MO and methylene blue ( MB) .关键词
层状双氢氧化物/吸附/染料/金属有机骨架/沸石咪唑酯骨架-67Key words
layered double hydroxide/adsorption/dye/metal organic frameworks/zeolitic imidazolate framework-67分类
化学化工引用本文复制引用
林泳岑,董雪,马玉芹,赵朗..具有染料选择吸附性的衍生于沸石咪唑酯骨架-67的NiCo-层状双氢氧化物设计与合成[J].应用化学,2020,37(6):683-694,12.基金项目
Supported by the National Natural Science Foundation of China(No.21201160), and the Jilin Province Science and Technology Development Program(No.20170204038GX, No.20170101180JC) 国家自然科学基金(21201160)、吉林省科技发展计划(20170204038GX,20170101180JC)项目资助 （No.21201160）
