Alzahrani Eman
Chemistry Department, Faculty of Science, Taif University, Taif, Saudi Arabia.
Int J Anal Chem. 2020 Feb 11;2020:8548927. doi: 10.1155/2020/8548927. eCollection 2020.
In the present study, preparation of CuBTC-monopol monoliths for use within the microchip solid phase extraction was undertaken through a 20-min UV lamp-assisted polymerization for 2,2-dimethoxy-2-phenyl acetophenone (DMPA), butyl methacrylate (BMA), and ethylene dimethacrylate (EDMA) alongside inclusion of the porogenic solvent system (1-propanol and methanol (1 : 1)). The resultant coating underwent coating using CuBTC nanocrystals in ethanolic solution of ethanolic solution of 1,3,5-benzenetricarboxylic acid (HBTC, 10 mM) and 10 mM copper(II) acetate Cu(CHCOO). This paper reports enhanced extraction, characterization, and synthesis studies for porous CuBTC metal organic frameworks that are marked by different methods including SEM/EDAX analysis, atomic force microscopy (AFM), and Fourier-transform infrared spectroscopy (FT-IR). The evaluation of the microchip's performance was undertaken as sorbent through retrieval of six toxic dyes (anionic and cationic dyes). Various parameters (desorption and extraction step flow rates, volume of desorption solvent, volume of sample, and type of desorption solvent) were examined to optimize dye extraction using fabricated microchips. The result indicated that CuBTC-monopol monoliths were permeable with the ability of removing impurities and attained high toxic dye extraction recovery (83.4-99.9%). The assessment of reproducibility for chip-to-chip was undertaken by computing the relative standard deviations (RSDs) of the six dyes in extraction. The interbatch and intrabatch RSDs ranged between 3.8 and 6.9% and 2.3 and 4.8%. Such features showed that fabricated CuBTC-monopol monolithic disk polycarbonate microchips have the potential of extracting toxic dyes that could be utilized for treating wastewater.
在本研究中，通过20分钟的紫外灯辅助聚合反应制备用于微芯片固相萃取的CuBTC-单块整体柱，该聚合反应涉及2,2-二甲氧基-2-苯基苯乙酮（DMPA）、甲基丙烯酸丁酯（BMA）和二甲基丙烯酸乙二醇酯（EDMA），同时加入致孔溶剂体系（1-丙醇和甲醇（1∶1））。所得涂层在1,3,5-苯三甲酸（均苯三甲酸，HBTC，10 mM）和10 mM醋酸铜Cu(CHCOO)的乙醇溶液中用CuBTC纳米晶体进行涂覆。本文报道了多孔CuBTC金属有机框架的强化萃取、表征和合成研究，这些研究通过扫描电子显微镜/能谱分析（SEM/EDAX分析）、原子力显微镜（AFM）和傅里叶变换红外光谱（FT-IR）等不同方法进行标记。通过回收六种有毒染料（阴离子和阳离子染料）对微芯片作为吸附剂的性能进行评估。研究了各种参数（解吸和萃取步骤流速、解吸溶剂体积、样品体积和解吸溶剂类型）以优化使用制造的微芯片进行染料萃取。结果表明，CuBTC-单块整体柱具有渗透性，能够去除杂质，并实现了高有毒染料萃取回收率（83.4 - 99.9%）。通过计算六种染料萃取的相对标准偏差（RSD）来评估芯片间的重现性。批间和批内RSD在3.8%至6.9%和2.3%至4.8%之间。这些特性表明，制造的CuBTC-单块整体盘状聚碳酸酯微芯片具有萃取有毒染料的潜力，可用于处理废水。
