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Significant enhancement in hydrolytic degradation of sulfur mustard promoted by silver nanoparticles in the Ag NPs@HKUST-1 composites

TitleSignificant enhancement in hydrolytic degradation of sulfur mustard promoted by silver nanoparticles in the Ag NPs@HKUST-1 composites
Publication TypeJournal Article
Year of Publication2018
AuthorsLi Y., Gao Q., Zhou Y., Zhang L., Zhong Y., Ying Y., Zhang M., Liu Y., Wang Y.
JournalJ Hazard Mater
Volume358
Pagination113-121
Date PublishedSep 15
ISBN Number0304-3894 (Linking)
Accession Number29990797
KeywordsDECONTAMINATION, Hydrolysis, metal-organic framework, Silver nanoparticle, Sulfur Mustard
Abstract

The Ag NPs@HKUST-1 composites have been successfully prepared with different loading amounts of silver nanoparticles in HKUST-1 featuring a three-dimensional system of channels constructed by benzene-1,3,5-tricarboxylate and dimeric cupric units by a simple one-pot hydrothermal method, and characterized by various microscopy and spectroscopy analysis techniques. The average particle size of Ag NPs increased with the increase of the loading amount of Ag NPs. The experimental results showed that the degradation of sulfur mustard (HD) under ambient conditions followed pseudo-first order reaction kinetics. Additionally, the optimized Ag NPs@HKUST-1 (wherein Ag is l6.67wt%) exhibited the highest degradation efficacy with an equilibrium rate constant and half-life for HD of 0.0450min(-1) and 15.34min, respectively. These values were significantly higher than those for pure HKUST-1 with an equilibrium rate constant and half-life for HD of 0.0168min(-1) and 41.29min, under the same experimental conditions. Gas chromatography-mass spectrometry (GC-MS) analysis on the product of 2-chloroethylethyl sulfide (2-CEES) degraded by Ag NPs@HKUST-1 showed that 2-hydroxyethyl ethyl sulfide (2-HEES) is the sole product, indicating that the remarkable enhancement of the degradation of HD must be due to the Ag NPs, which can promote hydrolysis of the chemical war agent in the composite.

URLhttps://www.ncbi.nlm.nih.gov/pubmed/29990797
DOI10.1016/j.jhazmat.2018.06.043
Short TitleSignificant enhancement in hydrolytic degradation of sulfur mustard promoted by silver nanoparticles in the Ag NPs@HKUST-1 composites

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