Okuhlelekayo kwendwangu yesipontshi ecwebezelayo eyinhlanganisela yezinto ezisetshenziselwa ukuqeda izinsongo zebhayoloji namakhemikhali.Umthombo wesithombe: Northwestern University
I-MOF-based fiber composite material esebenzayo eklanywe lapha ingase isetshenziswe njengendwangu evikelayo ezinsongweni zebhayoloji namakhemikhali.
Indwangu esebenza kaningi futhi evuselelekayo esekwe ku-N-chloro ebulala izinambuzane kanye nezisusa ubuthi zisebenzisa uhlaka oluqinile lwensimbi yensimbi ye-zirconium (MOF)
I-fiber composite impahla ibonisa umsebenzi osheshayo we-biocidal ngokumelene nawo womabili amagciwane e-Gram-negative (E. coli) kanye ne-Gram-positive bacteria (Staphylococcus aureus), futhi uhlobo ngalunye lungancishiswa kufika kuma-logarithms angu-7 phakathi nemizuzu engu-5.
Inhlanganisela ye-MOF/fiber elayishwe i-chlorine esebenzayo ingalulaza ngokukhetha nangokusheshisa isibabule lwesinaphi kanye ne-analogue yayo yamakhemikhali engu-2-chloroethyl ethyl sulfide (CEES) nengxenye yempilo engaphansi kwemizuzu emi-3.
Ithimba labacwaningi abavela eNyuvesi yaseNorthwestern University lenze indwangu eyinhlanganisela enemisebenzi eminingi engaqeda izinsongo zebhayoloji (njenge-coronavirus entsha ebangela i-COVID-19) kanye nezinsongo zamakhemikhali (njengalezo ezisetshenziswa ezimpini zamakhemikhali).
Ngemuva kokuthi indwangu isongelwa, impahla ingabuyiselwa esimweni sayo sokuqala ngokusebenzisa ukwelashwa okulula kwe-bleaching.
“Ukuba nezinto ezisebenza kabili ezingenza ngesikhathi esisodwa zingasebenzi izinto ezinobuthi zamakhemikhali nezebhayoloji kubalulekile ngoba inkimbinkimbi yokuhlanganisa izinto eziningi ukuze uqedele lo msebenzi iphezulu kakhulu,” kusho u-Omar Farha waseNorthwestern University, onguhlaka lwensimbi-organic noma ochwepheshe be-MOF. , lesi yisisekelo sobuchwepheshe.
UFarha unguprofesa wamakhemikhali eSikoleni Sezobuciko Nesayensi Weinberg kanye nombhali ohambisana naye wocwaningo.Uyilungu le-International Institute of Nanotechnology eNorthwestern University.
Izinhlanganisela ze-MOF/fiber zisekelwe ocwaningweni lwangaphambili lapho ithimba lika-Farha lidale khona i-nanomaterial engenza kusebenze izinzwa ezinobuthi.Ngokuhlinza okuthile okuncane, abacwaningi bangakwazi futhi ukwengeza ama-antiviral kanye nama-antibacterial entweni.
UFaha uthe i-MOF “iyisipontshi sokugeza esinembayo.”Izinto ezinosayizi we-Nano zenzelwe izimbobo eziningi, ezingabamba igesi, umhwamuko nezinye izinto njengesipontshi sicupha amanzi.Endwangu entsha eyinhlanganisela, umgodi we-MOF une-catalyst engakwazi ukwenza amakhemikhali anobuthi, amagciwane nama-bacteria.Ama-nanomaterials angama-porous angagcotshwa kalula emicu yendwangu.
Abacwaningi bathole ukuthi izinhlanganisela ze-MOF/fiber zikhombisa ukusebenza ngokushesha ngokumelene ne-SARS-CoV-2, kanye ne-Gram-negative bacteria (E. coli) kanye ne-Gram-positive bacteria (Staphylococcus aureus).Ngaphezu kwalokho, izinhlanganisela ze-MOF/fiber ezilayishwe i-chlorine esebenzayo zingehlisa ngokushesha igesi yesinaphi kanye nezifaniso zayo zamakhemikhali (2-chloroethyl ethyl sulfide, CEES).Ama-nanopores ezinto ze-MOF ezimbozwe kwendwangu zibanzi ngokwanele ukuvumela umjuluko namanzi ukuba kubaleke.
UFarha wengeze ngokuthi le nto eyinhlanganisela iyakwazi ukwehla ngoba idinga kuphela imishini eyisisekelo yokucubungula izindwangu esetshenziswa embonini.Uma isetshenziswa ngokuhambisana ne-mask, impahla kufanele ikwazi ukusebenza ngesikhathi esifanayo: ukuvikela ogqoka imaski kumagciwane aseduze kwakhe, nokuvikela abantu abathintana nomuntu onegciwane ogqoke imaskhi.
Abacwaningi bangakwazi futhi ukuqonda amasayithi asebenzayo wezinto ezibonakalayo ezingeni le-athomu.Lokhu kuvumela bona nabanye ukuthi bathole ubudlelwano bokusebenza kwesakhiwo ukuze bakhe ezinye izinto eziyinhlanganisela ezisuselwa ku-MOF.
Khipha i-chlorine esebenzayo evuselelekayo ku-zirconium-based textile composite ye-MOF ukuqeda izinsongo zebhayoloji namakhemikhali.Ijenali ye-American Chemical Society, Septhemba 30, 2021.
Uhlobo Lwenhlangano Uhlobo Lomkhakha Ozimele/Imboni Yezemfundo Yesifunda Sikahulumeni Wesifunda/Inhlangano Yezempi Yombuso Wendawo Yemidiya/Ubudlelwano Nomphakathi Okunye
Isikhathi sokuthumela: Oct-23-2021