Synergistic Acid-Base Action Leads to Ultrafast Decontamination of Nerve and Blister Agents by OH - Intercalated Zr 4+ -Doped MgAl-LDH under Ambient Conditions.

Autor: Huang C; State Key Laboratory of Chemical Resource Engineering, College of Chemistry, Beijing University of Chemical Technology, Beijing, 100029, P. R. China.; Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, 100850, P. R. China., Yang Y; State Key Laboratory of Chemical Resource Engineering, College of Chemistry, Beijing University of Chemical Technology, Beijing, 100029, P. R. China., Wang P; State Key Laboratory of Chemical Resource Engineering, College of Chemistry, Beijing University of Chemical Technology, Beijing, 100029, P. R. China., Fu H; State Key Laboratory of Chemical Resource Engineering, College of Chemistry, Beijing University of Chemical Technology, Beijing, 100029, P. R. China., Hu X; State Key Laboratory of Chemical Resource Engineering, College of Chemistry, Beijing University of Chemical Technology, Beijing, 100029, P. R. China., Zhou Y; State Key Laboratory of Chemical Resource Engineering, College of Chemistry, Beijing University of Chemical Technology, Beijing, 100029, P. R. China., Zhang L; State Key Laboratory of Chemical Resource Engineering, College of Chemistry, Beijing University of Chemical Technology, Beijing, 100029, P. R. China., Zhong Y; Toxicology and Medical Countermeasures, Beijing Institute of Pharmacology and Toxicology, Beijing, 100850, P. R. China.
Jazyk: angličtina
Zdroj: Advanced materials (Deerfield Beach, Fla.) [Adv Mater] 2024 Dec 09, pp. e2412688. Date of Electronic Publication: 2024 Dec 09.
DOI: 10.1002/adma.202412688
Abstrakt: Developing materials capable of rapidly decontaminating nerve and blister agents directly under ambient conditions are crucial for practical applications. In this work, Mg 3 Al 1- x Zr x -LDH with different Zr 4+ doping contents and corresponding OH - intercalated materials Mg 3 Al 1- x Zr x -LDH-OH are synthesized. First, they are used for the decontamination of nerve agents under ambient conditions, showing that increasing the Zr 4+ doping amount accelerates the decontamination rate of diethyl cyanophosphonate (DECP) and soman (GD), with the half-life of DECP and GD being 3-5 times shorter with Mg 3 Al 0.6 Zr 0.4 -LDH (the highest Zr 4+ doping content) compared to Mg 3 Al 1 -LDH. Notably, the intercalation of OH - in Mg 3 Al 0.6 Zr 0.4 -LDH further greatly enhances the catalytic activity for DECP and GD, the reaction half-life of DECP and GD with Mg 3 Al 0.6 Zr 0.4 -LDH-OH being 18 s and <15 s, respectively, which is the shortest recorded so far. Additionally, under ambient conditions, Mg 3 Al 0.6 Zr 0.4 -LDH-OH exhibits superior detoxification performance for mustard gas (HD) compared to Mg 3 Al 0.6 Zr 0.4 -LDH, with 92.8% of HD being removed within 6 h. Mechanistic studies reveal that Mg 3 Al 0.6 Zr 0.4 -LDH-OH efficiently decontaminates nerve and blister agents utilizing the synergistic effect of Lewis acid-base sites (Zr 4+ and laminate OH groups) and interlayer OH - . To extend the practical applications of the materials, PVA@(PAN/LDH-OH) self-detoxifying fiber loaded with Mg 3 Al 0.6 Zr 0.4 -LDH-OH is prepared.
(© 2024 Wiley‐VCH GmbH.)
Databáze: MEDLINE
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