Programmable crystalline sponge fabric composite khoom siv los tshem tawm cov kab mob lom thiab tshuaj lom neeg. Duab qhov chaw: Northwestern University
Multifunctional MOF-based fiber ntau cov khoom tsim los ntawm no tuaj yeem siv los ua cov ntaub thaiv kev tiv thaiv kab mob lom thiab tshuaj lom neeg.
Multifunctional thiab tauj dua tshiab N-chloro-based insecticidal thiab detoxifying textiles siv lub zog zirconium hlau organic thav duab (MOF)
Cov khoom siv fiber ntau qhia tau hais tias kev ua haujlwm biocidal sai tawm tsam cov kab mob Gram-negative (E. coli) thiab cov kab mob Gram-positive (Staphylococcus aureus), thiab txhua hom kab mob tuaj yeem txo mus txog 7 logarithms hauv 5 feeb.
MOF/fiber composites loaded nrog active tshuaj chlorine tuaj yeem xaiv thiab sai degrade sulfur mustard thiab nws cov tshuaj analogue 2-chloroethyl ethyl sulfide (CEES) nrog ib nrab-lub neej ntawm tsawg dua 3 feeb.
Pab pawg tshawb fawb los ntawm Northwestern University tau tsim cov ntaub ntawv sib xyaw ua ke uas tuaj yeem tshem tawm cov kev hem thawj lom neeg (xws li tus kabmob tshiab uas ua rau COVID-19) thiab kev hem thawj tshuaj lom neeg (xws li cov siv tshuaj tua rog).
Tom qab cov ntaub raug hem, cov khoom tuaj yeem rov qab los rau nws lub xeev qub los ntawm kev kho kom zoo nkauj yooj yim.
Omar Farha ntawm Northwestern University hais tias "Muaj cov khoom siv ua haujlwm ob zaug uas tuaj yeem ua rau cov tshuaj lom neeg thiab cov tshuaj lom neeg lom neeg ib txhij yog qhov tseem ceeb vim tias qhov nyuaj ntawm kev sib koom ua ke ntawm ntau yam ntaub ntawv los ua kom tiav cov haujlwm no yog siab heev," said Omar Farha ntawm Northwestern University, uas yog cov txheej txheem hlau-organic lossis MOF cov kws tshaj lij. , qhov no yog lub hauv paus ntawm technology.
Farha yog tus xibfwb ntawm chemistry ntawm Weinberg Lub Tsev Kawm Ntawv ntawm Kev Ua Yeeb Yam thiab Kev Tshawb Fawb thiab tus kws sau ntawv ntawm txoj kev tshawb no. Nws yog ib tug tswv cuab ntawm International Institute of Nanotechnology ntawm Northwestern University.
MOF/fiber composites yog raws li kev tshawb fawb yav dhau los uas Farha pab neeg tau tsim cov khoom siv nano uas tuaj yeem ua rau cov paj hlwb tsis zoo. Los ntawm qee qhov kev ua haujlwm me me, cov kws tshawb fawb tseem tuaj yeem ntxiv cov tshuaj tua kab mob thiab tshuaj tua kab mob rau cov khoom siv.
Faha tau hais tias MOF yog "dawb daim txhuam cev". Cov ntaub ntawv loj nano yog tsim los nrog ntau lub qhov, uas tuaj yeem ntxiab roj, vapor thiab lwm yam khoom xws li daim txhuam cev ntxiab dej. Nyob rau hauv cov ntaub ntawv tshiab, cov kab noj hniav ntawm MOF muaj cov catalyst uas tuaj yeem cuam tshuam cov tshuaj lom neeg, kab mob thiab kab mob. Porous nanomaterials tuaj yeem yooj yim coated ntawm textile fibers.
Cov kws tshawb fawb pom tau tias MOF/fiber composites qhia tau hais tias muaj kev ua haujlwm sai tiv thaiv SARS-CoV-2, nrog rau cov kab mob Gram-negative (E. coli) thiab Gram-positive bacteria (Staphylococcus aureus). Tsis tas li ntawd, MOF/fiber composites loaded with active chlorine can sai degrade mustard gas and its chemical analogues (2-chloroethyl ethyl sulfide, CEES). Cov nanopores ntawm MOF cov ntaub ntawv coated ntawm textile yog dav txaus kom hws thiab dej khiav.
Farha tau hais ntxiv tias cov khoom siv sib xyaw no tuaj yeem hloov tau vim tias nws tsuas yog yuav tsum tau siv cov khoom siv textile uas tam sim no siv hauv kev lag luam. Thaum siv nrog lub npog ntsej muag, cov khoom siv yuav tsum muaj peev xwm ua tau tib lub sijhawm: txhawm rau tiv thaiv tus neeg hnav lub npog ntsej muag los ntawm cov kab mob hauv lawv ib puag ncig, thiab tiv thaiv cov tib neeg uas tau ntsib nrog tus kab mob hnav lub npog ntsej muag.
Cov kws tshawb fawb tseem tuaj yeem nkag siab qhov chaw nquag ntawm cov ntaub ntawv ntawm qib atomic. Qhov no tso cai rau lawv thiab lwm tus los muab cov qauv kev sib raug zoo los tsim lwm cov ntaub ntawv MOF.
Immobilize active tshuaj chlorine nyob rau hauv zirconium-based MOF textile composites kom tshem tawm cov kab mob lom thiab tshuaj lom neeg. Phau ntawv Journal ntawm American Chemical Society, Cuaj Hlis 30, 2021.
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Post lub sij hawm: Oct-23-2021