吸附
光催化
涂层
化学工程
材料科学
聚合物
废水
选择性
化学
有机化学
纳米技术
废物管理
催化作用
工程类
作者
Zilong Li,Xin Wang,Wei Kuang,Chune Dong,Yunxiang Fan,Yuan Guo,Qiongjie Qiao,Zhiliang Zhu,Yingying Liu,Ying Zhu
标识
DOI:10.1016/j.biortech.2022.127080
摘要
Dye wastewater and discarded biofiber have brought huge pressure to sustainable developments of ecology and economy. By utilizing dopamine chemistry and benzophenone mediated "grafting onto" atom transfer radical polymerization (ATRP), this work reported a biomass adsorbent containing discarded wool substrate, photocatalytic PDA coating and zwitterionic polymer brushes for dyes removal. The grafted zwitterionic polymer brushes impart the material with not only high adsorption capacity and rapid adsorption rate, but also switchable adsorption selectivity and pH-controlled regeneration capability. Benefiting from such outstanding adsorption performance and excellent free-standing property, the adsorbent could fulfill diversified needs of both static and dynamic adsorptions. Under daylight, the constructed photocatalytic PDA coating could in-situ degrade the captured pollutant, thus achieving consecutive adsorption-degradation-regeneration utilization. Furthermore, through simple dip-coating and cleaner UV-irradiation techniques, the preparation process could be scaled up. This work contributes to both the upcycling of discarded biofiber waste and the development of advanced biomass adsorbent.
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