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 nevuselelekayo esekwe ku-N-chloro ebulala izinambuzane futhi esusa 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 Isifunda Sikahulumeni Wesifunda/Inhlangano Yezempi Yombuso Wendawo Yemidiya/Ubudlelwano Nomphakathi Okunye
Isikhathi sokuthumela: Oct-23-2021