Cov ntaub tshiab uas siv tau dua tuaj yeem tshem tawm cov kev hem thawj ntawm cov kab mob thiab tshuaj lom neeg

Cov ntaub ntawv sib xyaw ua ke uas siv tau los tshem tawm cov kev hem thawj ntawm cov kab mob thiab tshuaj lom neeg. Duab los ntawm: Northwestern University
Cov khoom siv fiber ntau ua los ntawm MOF uas tsim los ntawm no siv tau ua daim ntaub tiv thaiv kev hem thawj ntawm cov kab mob thiab tshuaj lom neeg.
Cov ntaub uas siv tau ntau yam thiab rov ua dua tshiab N-chloro-based insecticidal thiab detoxifying siv lub thav duab zirconium hlau organic (MOF) muaj zog.
Cov khoom siv fiber sib xyaw ua ke qhia txog kev ua haujlwm biocidal sai sai tawm tsam ob qho tib si Gram-negative bacteria (E. coli) thiab Gram-positive bacteria (Staphylococcus aureus), thiab txhua hom kab mob tuaj yeem txo qis txog li 7 logarithms hauv 5 feeb.
MOF/fiber composites uas muaj cov chlorine nquag tuaj yeem xaiv thiab sai sai degrade sulfur mustard thiab nws cov tshuaj analogue 2-chloroethyl ethyl sulfide (CEES) nrog lub neej ib nrab tsawg dua 3 feeb.
Ib pab neeg tshawb fawb los ntawm Northwestern University tau tsim ib daim ntaub sib xyaw ua ke uas muaj ntau yam kev phom sij uas tuaj yeem tshem tawm cov kev hem thawj ntawm cov kab mob (xws li tus kab mob coronavirus tshiab uas ua rau COVID-19) thiab cov kev hem thawj ntawm tshuaj lom neeg (xws li cov uas siv hauv kev ua tsov rog tshuaj lom neeg).
Tom qab cov ntaub raug hem, cov khoom siv tuaj yeem rov qab los rau nws lub xeev qub los ntawm kev kho kom dawb yooj yim.
"Muaj cov khoom siv ua haujlwm ob yam uas tuaj yeem ua rau cov tshuaj lom neeg thiab cov tshuaj lom neeg tsis ua haujlwm ib txhij yog qhov tseem ceeb vim tias qhov nyuaj ntawm kev sib xyaw ntau yam khoom siv los ua kom tiav txoj haujlwm no yog qhov siab heev," Omar Farha ntawm Northwestern University, uas yog tus kws tshaj lij ntawm cov hlau-organic lossis MOF, hais tias, qhov no yog lub hauv paus ntawm thev naus laus zis.
Farha yog ib tug xib fwb qhia txog chemistry ntawm Weinberg School of Arts and Sciences thiab yog tus sau ntawv sib koom ua ke ntawm txoj kev tshawb fawb no. Nws yog ib tug tswv cuab ntawm International Institute of Nanotechnology ntawm Northwestern University.
Cov khoom sib xyaw ua ke MOF/fiber yog raws li kev tshawb fawb ua ntej uas Farha pab pawg tau tsim cov khoom siv nano uas tuaj yeem ua rau cov tshuaj lom hauv cov hlab ntsha tsis ua haujlwm. Los ntawm qee qhov kev ua haujlwm me me, cov kws tshawb fawb kuj tseem tuaj yeem ntxiv cov tshuaj tua kab mob thiab cov tshuaj tua kab mob rau hauv cov khoom siv.
Faha hais tias MOF yog "lub phuam da dej uas muaj qhov tseeb." Cov ntaub ntawv me me Nano yog tsim los nrog ntau lub qhov, uas tuaj yeem ntes cov roj, cov pa thiab lwm yam khoom zoo li lub phuam da dej ntes dej. Hauv cov ntaub sib xyaw tshiab, lub qhov ntawm MOF muaj cov tshuaj catalyst uas tuaj yeem ua rau cov tshuaj lom, cov kab mob thiab cov kab mob tsis ua haujlwm. Cov ntaub ntawv nano uas muaj qhov nqus tau yooj yim tuaj yeem pleev xim rau ntawm cov ntaub fibers.
Cov kws tshawb nrhiav pom tias MOF/fiber composites tau ua haujlwm sai sai tiv thaiv SARS-CoV-2, nrog rau cov kab mob Gram-negative (E. coli) thiab cov kab mob Gram-positive (Staphylococcus aureus). Tsis tas li ntawd, MOF/fiber composites uas muaj chlorine nquag tuaj yeem ua rau cov roj mustard thiab nws cov tshuaj lom neeg (2-chloroethyl ethyl sulfide, CEES) puas tsuaj sai. Cov nanopores ntawm cov khoom MOF coated rau ntawm cov ntaub yog dav txaus kom tso cai rau hws thiab dej kom dim.
Farha ntxiv tias cov khoom sib xyaw no tuaj yeem ua tau ntau yam vim nws tsuas yog xav tau cov khoom siv ua cov ntaub yooj yim uas siv hauv kev lag luam. Thaum siv ua ke nrog lub npog ntsej muag, cov khoom siv yuav tsum ua tau tib lub sijhawm: los tiv thaiv tus neeg hnav lub npog ntsej muag los ntawm cov kab mob hauv lawv cheeb tsam, thiab los tiv thaiv cov tib neeg uas tau kov tus neeg mob hnav lub npog ntsej muag.
Cov kws tshawb nrhiav kuj tseem tuaj yeem nkag siab txog cov chaw ua haujlwm ntawm cov khoom siv ntawm theem atomic. Qhov no tso cai rau lawv thiab lwm tus los txiav txim siab txog kev sib raug zoo ntawm cov qauv thiab kev ua tau zoo los tsim lwm cov khoom sib xyaw ua ke raws li MOF.
Ua kom cov chlorine uas siv tau dua tshiab tsis txav tau hauv cov khoom sib xyaw ua ke MOF uas yog zirconium kom tshem tawm cov kev hem thawj ntawm cov kab mob thiab tshuaj lom neeg. Phau ntawv Journal of the American Chemical Society, Cuaj Hlis 30, 2021.
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