颗粒
双酚A
吸附
微型多孔材料
X射线光电子能谱
多孔性
介孔材料
化学工程
金属有机骨架
化学
材料科学
无机化学
有机化学
复合材料
物理化学
催化作用
工程类
环氧树脂
作者
Wanyong Yang,Yu Chen,Liuxin Sun,Qing Liu,Zhaoyang Fei,Xian Chen,Zhuxiu Zhang,Jihai Tang,Mifen Cui,Xu Qiao
标识
DOI:10.1016/j.cej.2022.140843
摘要
Pore expansion of the microporous metal–organic frameworks (MOFs) has caused most attraction in water treatment, but it is still challenging for MOFs shaping during the industrialization progress. Herein, pore-expanded UiO-66 pellet was fabricated to efficiently adsorb bisphenol A (BPA), which comprises the hierarchically porous UiO-66 (HP-UiO-66) powders well-distributed in the alginate-Ca2+ network. The mesopore percentage of HP-UiO-66 can be controlled by selective thermolysis of the hemilabile linker 2-nitroterephthalic acid (NO2-BDC) for the first time. The N2 adsorption/desorption tests show that the fabricated UiO-66 pellets well preserved the porosity of the original 0.25HP-UiO-66 powders, and the UiO-66 pellets had the excellent adsorption performance towards BPA with adsorption capacity up to 235.1 mg/g under neutral condition. Besides, the mechanism for BPA adsorption was revealed to be Zr-O bonding and π-π interaction by the analysis of X-ray photoelectron spectroscopy (XPS), and hydrogen bonding was simulated by density functional theory (DFT) calculation. Moreover, it was found that 1 g of the UiO-66 pellets with pore expansion can decontaminate >3 L water containing 100 mg/L BPA from continuous stream, and the high regenerative rate indicates the future industrial applications.
科研通智能强力驱动
Strongly Powered by AbleSci AI