The energy-free purification of trace thallium(I)-contaminated potable water using a high-selective filter paper with multi-layered Prussian blue decoration
作者机构：Key Laboratory for Water Quality and Conservation of the Pearl River Delta(Ministry of Education)School of Environmental Science and EngineeringGuangzhou UniversityGuangzhou 510006China College of Light Chemical Industry and Materials EngineeringShunde PolytechnicFoshan 528333China
出 版 物：《Frontiers of Chemical Science and Engineering》 (化学科学与工程前沿（英文版）)
年 卷 期：2024年第18卷第2期
页 面：1-12页
核心收录：
学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 07[理学] 08[工学] 09[农学] 0903[农学-农业资源与环境] 0713[理学-生态学]
基 金：supported by the National Natural Science Foundation of China(Grant Nos.22006026,52270001) Guangdong Basic and Applied Basic Research Foundation(Grant Nos.2023A1515012506,2019A1515110546) Science and Technology Program of Guangzhou(Grant No.202102080160) Project of Young Innovative Talents in Colleges and Universities of Guangdong Province(Grant No.2019KQNCX111) Outstanding Youth Project of Guangdong Natural Science Foundation(Grant No.2022B1515020030) Guangzhou Science and Technology Project(Grant Nos.202201020530,202201020200) Research Project of Guangzhou University(Grant No.YJ2023026)
主 题：membrane adsorption Prussian blue energy-free filtration potable water trace thallium(I)
摘 要：Thallium is a highly toxic metal,and trace amount of thallium(I)(Tl+)in potable water could cause a severe water crisis,which arouses the exploitation of highly-effective technology for purification of Tl+contaminated *** report proposes the multi-layered Prussian blue(PB)-decorated composite membranes(PBx@PDA/PEI-FP)based on the aminated filter papers for Tl+*** characterization by Fourier transform infrared spectrometer-attenuated total reflectance,scanning electron microscope,thermogravimetric analysis,X-ray photoelectron spectroscopy and X-ray diffraction were performed to confirm the in situ growth of cubic PB crystals on filter paper membrane surfaces via the aminated layers,and the successful fabrication of multi-layered PB overcoats via the increasing of aminated *** effect of PB layers on Tl+removal by PBx@PDA/PEI-FP from simulated drinking water was evaluated as well as the influence of different experimental conditions.A trade-off between PB decoration layer number and PB distribution sizes is existed in Tl+uptake by PBx@PDA/*** double-layered PB2@PDA/PEI-FP membrane showed the maximum sorption capacity,but its Tl+uptake performance was weakened by the acid,coexisting ions(K+and Na+)and powerful operation pressure,during filtrating a large volume of low-concentrated Tl+-containing ***,the negative effect of coexisting ions on the Tl+uptake could be effectively eliminated in weak alkaline water,and the Tl+removal was increased up to 100%without any pressure driving for PB2@PDA/PEI-FP *** importantly,PB2@PDA/PEI-FP displayed the high-efficiency and high-selectivity in purifying the Tl+-spiked Pearl River water,in which the residual Tl+in filtrate was less than 2μg·L^(–1) to meet the drinking water standard of United States Environmental Protection *** work provides a feasible avenue to safeguard the drinking water in remote and underdeveloped area via the energy-free operation.
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