煅烧
吸附
纳米复合材料
化学工程
材料科学
立方氧化锆
比表面积
碳纤维
金属有机骨架
X射线光电子能谱
傅里叶变换红外光谱
无机化学
化学
有机化学
复合数
纳米技术
复合材料
催化作用
陶瓷
工程类
作者
Dezhi Chen,Hang Sun,Yachao Wang,Hongying Quan,Zisheng Ruan,Zhong Ren,Xubiao Luo
标识
DOI:10.1016/j.apsusc.2019.145054
摘要
Nanoarchitecture design of metal oxides/porous carbon nanocomposites from metal-organic frameworks is attracting considerable attention. Herein, UiO-66 was used as precursor and template to fabricate zirconia/porous carbon nanocomposites with tunable specific surface area and pore volume by a two-step calcination. The results showed that the tetragonal ZrO2 nanoparticles in carbon matrix gradually grow up and transform into monoclinic ZrO2 and ZrO as well as escape from the porous carbon nanocubes resulting in the increase of their specific surface area and pore volume with the increase of calcination temperature. The as-prepared nanocomposites at 1200 °C (ZPCNCs-12) exhibited a high specific surface area up to 468.9 m2 g−1, and excellent adsorption performance with high adsorption capacity (190 mg g−1), fast adsorption equilibrium (60 min) and recyclability for the removal of carbamazepine from water in a wide pH range of 2–12. FTIR spectra suggested that the adsorption of carbamazepine on ZPCNCs-12 was physical, and XPS results further confirmed that the adsorption was mainly dominated by the π-π electron donor-acceptor interaction between carbamazepine molecule and carbon nanocubes. It indicates that the two-step calcination of metal-organic frameworks is an effective approach to fabricate highly efficient sorbent for the removal of organic pollutants from water.
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