吸附
朗缪尔吸附模型
化学
亚甲蓝
废水
污染物
氢键
吸收(声学)
化学工程
自愈水凝胶
核化学
材料科学
有机化学
环境工程
催化作用
分子
光催化
复合材料
工程类
作者
Shaoan Cheng,Pengfei Xie,Zhiming Yu,Ruonan Gu,Yuqing Su
标识
DOI:10.1016/j.envres.2022.113354
摘要
University of Oslo-66 (UiO-66) was a potential adsorbent for removing various pollutants from wastewater. Modifying the UiO-66 surface with different functional groups could enhance the adsorption performance. In this study, the UiO-66 modified with a functional group of –NH2 or –NO2 was prepared and tested to adsorb different pollutants. The results showed that –NO2 modified UiO-66 increased the adsorption capacity of tetracycline by 17 times to 94.08 mg g−1 compared with unmodified UiO-66. The adsorption process of UiO-66-NO2 followed the pseudo-second-order adsorption kinetic model and Langmuir isotherm model with a maximum isotherm adsorption capacity of 127.32 mg g−1. The adsorption interaction was hydrogen bonding and electrostatic attraction. The UiO-66-NO2 also showed good adsorption performance to Co2+, Methylene blue, Congo red. Fixing UiO-66-NO2 into hydrogel performed a stable absorption performance with a high absorption capacity (71.56 mg g−1) to TC and a good regeneration rate (85%) after five cycles, providing a novel applicable way to remove pollutants from wastewater.
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