Effects of functional groups of –NH2 and –NO2 on water adsorption ability of Zr-based MOFs (UiO-66)

• DOI: 10.1016/j.chemphys.2021.111093
• Publication Date: 2021-01-08T06:06:31Z
• Authors: Xingchang Tang; Yongwei Luo; Zhijian Zhang; Wanwu Ding; Dexue Liu; Jingchuan Wang; Li Guo; Ming Wen
• Keywords: 01 natural sciences; 0104 chemical sciences

Abstract The high surface areas and tunable properties of Zr-based MOFs make them as attractive materials for gas capture, storage, and separation. In this work, UiO-66, one kinds of Zr-based MOFs, functionalized by single or binary –NO2 and –NH2 groups are synthesized. Water adsorption ability and hydrophilicity of UiO-66 and functionalized UiO-66-X were investigated. It is found that surface area of UiO-66 is decreased after introducing functional groups, while hydrophilicity of UiO-66 increased after functionalized with –NO2 and –NH2. Therefore, after balance the effects of surface area and hydrophilicity, UiO-66-NH2 shows the best water adsorption propriety.