Preparation of Guanidine-Grafted NH2-MIL-101(Fe)/Polyvinylidene Fluoride Mixed Matrix Membranes for Adsorption of Pb2+ for Isopropanol Purification - Details

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Electronic-grade　isopropyl　alcohol　is　widely　utilized　in　the　cleaning　of　semiconductors　and　microelectronic　components.　Removing　ions　like　Pb2+　is　crucial　since　the　presence　of　impurities　may　cause　degradation　of　electronics,　increased　failure　rates,　and　short　circuits.　Membrane　materials　offer　a　number　of　advantages　in　the　field　of　adsorption　separation;　however,　the　lack　of　adsorption　sites　results　in　limited　adsorption　capacity.　In　the　current　work,　guanidino-grafted　NH2-MIL-101(Fe)　was　incorporated　into　polyvinylidene　fluoride　(PVDF)　to　prepare　MOF/PVDF　mixed　matrix　membranes　(NM/PVDF)　for　the　removal　of　Pb2+　from　isopropanol.　Benefiting　from　the　larger　specific　surface　area　and　more　lone　electron　pairs　in　the　guanidine　group,　the　Pb2+　adsorption　capacity　of　the　as-prepared　NM/PVDF　membrane　was　29.4458　mg/g,　which　was　higher　than　that　of　the　NH2-MIL-101(Fe)/PVDF　membrane　(20.9306　mg/g)　and　the　pure　PVDF　membrane　(6.7324　mg/g).　The　NM/PVDF　membrane　was　able　to　reduce　the　concentration　of　Pb2+　from　500　to　86.73　ppb.　This　work　highlights　the　potential　of　guanidine-grafted　Fe-based　MOFs/PVDF　membranes　as　adsorbents　for　acquisition　of　electronic-grade　solvents.　©　2024　American　Chemical　Society.

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[ 1 ] [Cai J.]Department of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Fuzhou University, Fuzhou, 350116, China
[ 2 ] [Cai J.]Qingyuan Innovation Laboratory, Quanzhou, 362801, China
[ 3 ] [Shi J.]Department of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Fuzhou University, Fuzhou, 350116, China
[ 4 ] [Zhang J.]Department of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Fuzhou University, Fuzhou, 350116, China
[ 5 ] [Miao X.]Department of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Fuzhou University, Fuzhou, 350116, China
[ 6 ] [Wang S.]Department of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Fuzhou University, Fuzhou, 350116, China
[ 7 ] [Xiao L.]Department of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Fuzhou University, Fuzhou, 350116, China
[ 8 ] [Xiao L.]Qingyuan Innovation Laboratory, Quanzhou, 362801, China
[ 9 ] [Liu D.]College of Materials and Chemical Engineering, Minjiang University, Fuzhou, 350108, China
[ 10 ] [Hou L.]Department of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Fuzhou University, Fuzhou, 350116, China
[ 11 ] [Hou L.]Qingyuan Innovation Laboratory, Quanzhou, 362801, China
[ 12 ] [Hou L.]Fujian Key Laboratory of Advanced Manufacturing Technology of Specialty Chemicals, Fuzhou University, Fuzhou, 350116, China

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Inorganic Chemistry

ISSN： 0020-1669

Year： 2024

Issue： 37

Volume： 63

Page： 17225-17237

4 . 3 0 0

JCR@2023

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