Izinto ezihlanganisiwe zendwangu yesiponji ecwebezelayo ehlelwe kahle ezisetshenziselwa ukuqeda izinsongo zezinto eziphilayo kanye namakhemikhali. Umthombo wesithombe: iNorthwestern University
Izinto ezihlanganisiwe zefayibha ezisekelwe ku-MOF ezisebenza ngemisebenzi eminingi eziklanyelwe lapha zingasetshenziswa njengendwangu evikelayo ezinsongweni zezinto eziphilayo nezamakhemikhali.
Izindwangu ezibulala izinambuzane nezibulala ubuthi ezisekelwe ku-N-chloro ezisebenza ngemisebenzi eminingi futhi ezivuselelekayo zisebenzisa uhlaka oluqinile lwensimbi ye-zirconium (MOF)
Izinto ezihlanganisiwe zefayibha zibonisa umsebenzi osheshayo we-biocidal ngokumelene namagciwane angenamandla e-Gram (E. coli) kanye namagciwane angenamandla e-Gram (Staphylococcus aureus), futhi uhlobo ngalunye lungancishiswa ngama-logarithms afinyelela ku-7 kungakapheli imizuzu emi-5.
Izinhlanganisela ze-MOF/fiber ezigcwele i-chlorine esebenzayo zingawohloza ngokukhetha nangokushesha i-sulfur mustard kanye ne-analogue yayo yamakhemikhali i-2-chloroethyl ethyl sulfide (CEES) ngesigamu sempilo esingaphansi kwemizuzu emi-3.
Ithimba locwaningo elivela eNorthwestern University lisungule indwangu ehlanganisiwe enemisebenzi eminingi engaqeda izinsongo zezinto eziphilayo (njenge-coronavirus entsha ebangela i-COVID-19) kanye nezinsongo zamakhemikhali (njengalezo ezisetshenziswa empini yamakhemikhali).
Ngemva kokuba indwangu isongelwa, indwangu ingabuyiselwa esimweni sayo sokuqala ngokwelashwa okulula kokumhlophe.
“Ukuba nezinto ezisebenza kabili ezingavimbela ngasikhathi sinye ubuthi bamakhemikhali kanye nobezinto eziphilayo kubalulekile ngoba ubunzima bokuhlanganisa izinto eziningi ukuze kuqedwe lo msebenzi buphezulu kakhulu,” kusho u-Omar Farha waseNorthwestern University, onguchwepheshe bezinhlaka zensimbi-organic noma i-MOF, lokhu kuyisisekelo sobuchwepheshe.
UFarha unguprofesa wekhemistri eWeinberg School of Arts and Sciences kanye nombhali ohambisanayo walolu cwaningo. Uyilungu le-International Institute of Nanotechnology eNorthwestern University.
Izinhlanganisela ze-MOF/fiber zisekelwe ocwaningweni lwangaphambilini lapho ithimba likaFarha ladala khona i-nanomaterial engavimba ama-neurotic agents anobuthi. Ngeminye imisebenzi emincane, abacwaningi bangangeza nama-antiviral kanye nama-antibacterial agents entweni.
UFaha uthe i-MOF “iyisiponji sokugeza esinembile.” Izinto ezincane zakhiwe ngezimbobo eziningi, ezingabamba igesi, umhwamuko nezinye izinto ezifana nesiponji zibamba amanzi. Endwangu entsha ehlanganisiwe, umgodi we-MOF une-catalyst engavimba amakhemikhali anobuthi, amagciwane kanye namagciwane. Izinto ezincane ezinezimbobo zingambozwa kalula ngemicu yendwangu.
Abacwaningi bathole ukuthi ama-MOF/fiber composites abonise ukusebenza okusheshayo ngokumelene ne-SARS-CoV-2, kanye nama-Gram-negative bacteria (E. coli) kanye nama-Gram-positive bacteria (Staphylococcus aureus). Ngaphezu kwalokho, ama-MOF/fiber composites agcwele i-chlorine esebenzayo angalimaza ngokushesha igesi yesinaphi kanye nama-chemical analogue ayo (2-chloroethyl ethyl sulfide, CEES). Ama-nanopores ezinto ze-MOF ezimbozwe ngendwangu abanzi ngokwanele ukuvumela ukujuluka namanzi kuphume.
UFarha wengeze ngokuthi le nto ehlanganisiwe ingandiswa ngoba idinga kuphela imishini yokucubungula izindwangu esetshenziswa embonini njengamanje. Uma isetshenziswa kanye nemaski, le nto kufanele ikwazi ukusebenza ngesikhathi esifanayo: ukuvikela umuntu ogqoka imaski kumagciwane aseduze, nokuvikela abantu abathintana nomuntu onegciwane ogqoke imaski.
Abacwaningi bangaqonda nezindawo ezisebenzayo zezinto ezingeni le-athomu. Lokhu kuvumela bona nabanye ukuthi bathole ubudlelwano besakhiwo nokusebenza ukuze bakhe ezinye izinto ezihlanganisiwe ezisekelwe ku-MOF.
Vimbela i-chlorine esebenzayo evuselelekayo ezinhlanganisela zendwangu ze-MOF ezisekelwe ku-zirconium ukuze kuqedwe izinsongo zezinto eziphilayo nezamakhemikhali. Ijenali ye-American Chemical Society, Septhemba 30, 2021.
Uhlobo Lwenhlangano Uhlobo Lwenhlangano Umkhakha Ozimele/Imboni Imfundo Uhulumeni Kahulumeni Wesifundazwe Uhulumeni Wesifundazwe/Wendawo Wezempi Inhlangano Engenzi Nzuzo Abezindaba/Ubudlelwano Bomphakathi Okunye
Isikhathi sokuthunyelwe: Okthoba-23-2021