文献类型：期刊文献

英文题名：Tailorable Smart Attapulgite-Based Hybrid Material for Efficient Multifunctional Oil-Water Separation and Heavy Metal Removal

作者：Wang, Yuying[1];Shao, Feifei[1];Jing, Jianfen[2];Miao, Han[3];Lin, Shaoliang[3];Li, Xinxin[1]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Key Lab Specially Funct Polymer Mat & Related, Minist Educ, Shanghai 200237, Peoples R China;[2]Anji Microelect Technol Shanghai Co Ltd, Shanghai 201201, Peoples R China;[3]East China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai Key Lab Adv Polymer Mat, Key Lab Ultrafine Mat,Minist Educ, Shanghai 200237, Peoples R China

年份：2025

卷号：3

期号：10

起止页码：3464

外文期刊名：ACS APPLIED ENGINEERING MATERIALS

收录：WOS:【ESCI(收录号:WOS:001578831500001)】；

基金：The authors are grateful to the financial support provided by the Fundamental Research Funds for the Central Universities (Grant no. JKD01221701), the Young Scientists Fund of the National Natural Science Foundation of China (Grant no.52203258), and the Shanghai Pujiang Program (Grant no. 21PJ1402100).

语种：英文

外文关键词：oil-water separation; attapulgite-based materials; controlled interface modification; heavy metal ion removal; wastewater treatment

摘要：We report a tailorable strategy of constructing pH-responsive multifunctional attapulgite (APT)-polymer hybrid material by precisely grafting polymer chains onto the surface of APT via surface-initiated activators regenerated by electron transfer atom transfer radical polymerization (SI-ARGET ATRP), enabling the fine-tuning of interfacial properties by molecular-level design and leading to a smart inorganic-organic system with integrated oil/water separation and heavy metal ion removal capabilities. The resulting attapulgite-poly(2-(dimethylamino)ethyl methacrylate) (APT-PDMAEMA) hybrid exhibits reversible pH-responsive wettability and strong environmental adaptability, achieving remarkable separation efficiencies (>99.9%) and flux (similar to 170 Lm(-2)h(-1)) for various types of oil-water mixtures with excellent recyclability over 10 cycles, and allowing efficient demulsification of surfactant-stabilized emulsions (>99.5% separation efficiency), high-purity and stable water flux (similar to 150 Lm(-2)h(-1)). Simultaneously, the material achieves high adsorption performance for a series of heavy metal ions with removal efficiencies up to 99% across a range of pH and concentration conditions. The strategy offers modularity, scalability, and compatibility for different environmental needs. The mechanisms underlying the pH-triggered wettability and adsorption behavior were systematically investigated, offering fundamental insights into the design of smart interfaces. Overall, this work presents a versatile and scalable strategy for the tailored design of hybrid materials, providing both theoretical significance and practical value for next-generation multifunctional wastewater treatment technologies.