Izinto ezidityanisiweyo zelaphu lesiponji elicwangcisiweyo elisetyenziselwa ukuphelisa iingozi zebhayoloji kunye neekhemikhali. Umthombo womfanekiso: IYunivesithi yaseNorthwestern
Izinto ezidityanisiweyo zefayibha ezisekwe kwi-MOF ezisebenza ngeendlela ezininzi eziyilwe apha zingasetyenziswa njengelaphu elikhuselayo kwiingozi zebhayoloji nezekhemikhali.
Iimpahla ezibulala izinambuzane nezibulala iintsholongwane ezisekelwe kwi-N-chloro ezisebenza ngeendlela ezininzi nezihlaziyekayo zisebenzisa ifreyimu eqinileyo yesinyithi i-zirconium (MOF)
Izinto ezidityanisiweyo zefayibha zibonisa umsebenzi okhawulezayo we-biocidal ngokuchasene ne-Gram-negative bacteria (E. coli) kunye ne-Gram-positive bacteria (Staphylococcus aureus), kwaye uhlobo ngalunye lunokunciphisa ukuya kuthi ga kwi-7 logarithms kwimizuzu emi-5.
Ii-MOF/fiber composites ezigcwele i-chlorine esebenzayo zinokonakalisa i-sulfur mustard kunye ne-chemical analogue yayo ye-2-chloroethyl ethyl sulfide (CEES) ngokukhetha nangokukhawuleza, ubomi bayo bungaphantsi kwemizuzu emi-3.
Iqela lophando elivela kwiYunivesithi yaseNorthwestern liphuhlise ilaphu elidityanisiweyo elinokusebenza ngeendlela ezininzi elinokuphelisa iingozi zebhayoloji (ezifana ne-coronavirus entsha ebangela i-COVID-19) kunye neengozi zekhemikhali (ezifana nezo zisetyenziswa kwimfazwe yeekhemikhali).
Emva kokuba ilaphu lisengozini, ilaphu linokubuyiselwa kwimeko yalo yokuqala ngonyango olulula lokulifaka umbala.
“Ukuba nezinto ezisebenza kabini ezinokuphelisa ngaxeshanye iikhemikhali kunye nezinto ezinobungozi bebhayoloji kubalulekile kuba ubunzima bokudibanisa izinto ezininzi ukuze kugqitywe lo msebenzi buphezulu kakhulu,” utshilo u-Omar Farha waseNorthwestern University, oyingcali yesakhelo sesinyithi-sendalo okanye i-MOF, esi sisiseko sobuchwepheshe.
UFarha nguprofesa wekhemistri kwiSikolo soBugcisa neSayensi saseWeinberg kwaye ungumbhali ohambelanayo kolu phando. Ulilungu leZiko leZizwe ngeZizwe leNanotechnology kwiYunivesithi yaseNorthwestern.
Ii-MOF/fiber composites zisekelwe kuphando lwangaphambili apho iqela likaFarha lenze i-nanomaterial enokuthintela ii-arhente zemithambo-luvo ezinetyhefu. Ngemisebenzi emincinci, abaphandi banokongeza ii-arhente ze-antiviral kunye ne-antibacterial kwisixhobo.
UFaha uthe i-MOF “sisiponji sokuhlamba esichanekileyo.” Izinto ezinobukhulu obuncinci zenziwe ngemingxuma emininzi, enokubamba igesi, umphunga kunye nezinye izinto ezifana nesiponji zibamba amanzi. Kwilaphu elitsha elidityanisiweyo, umngxuma we-MOF une-catalyst enokuthi ingasebenzi iikhemikhali ezinobuthi, iintsholongwane kunye neebhaktheriya. Izinto ezinamanzi anomngxuma zinokugqunywa lula kwimicu yelaphu.
Abaphandi bafumanise ukuba ii-MOF/fiber composites zibonakalise ukusebenza ngokukhawuleza ngokuchasene ne-SARS-CoV-2, kunye neebhaktheriya ezine-Gram-negative (E. coli) kunye neebhaktheriya ezine-Gram-positive (Staphylococcus aureus). Ukongeza, ii-MOF/fiber composites ezigcwele i-chlorine esebenzayo zinokutshabalalisa ngokukhawuleza igesi ye-mustard kunye nee-analogues zayo zeekhemikhali (2-chloroethyl ethyl sulfide, CEES). Ii-nanopores zezinto ze-MOF ezigqunywe kwilaphu zibanzi ngokwaneleyo ukuvumela ukubila namanzi ukuba kuphume.
UFarha wongeze ngelithi le nto idityanisiweyo inokwandiswa kuba ifuna kuphela izixhobo ezisisiseko zokucubungula amalaphu ezisetyenziswa ngoku kushishino. Xa isetyenziswa kunye nemaski, le nto kufuneka ikwazi ukusebenza ngaxeshanye: ukukhusela umntu onxibe imaski kwiintsholongwane ezikufutshane naye, kunye nokukhusela abantu abadibana nomntu osulelekileyo onxibe imaski.
Abaphandi banokuqonda neendawo ezisebenzayo zezinto ezikwinqanaba leathomu. Oku kuvumela bona kunye nabanye ukuba bafumane ubudlelwane besakhiwo-ukusebenza ukuze benze ezinye izinto ezidityanisiweyo ezisekwe kwi-MOF.
Nqanda i-chlorine esebenzayo evuselelekayo kwi-MOF textile composites esekwe kwi-zirconium ukuze kupheliswe iingozi zebhayoloji kunye neekhemikhali. Ijenali ye-American Chemical Society, nge-30 kaSeptemba, ngo-2021.
Uhlobo lombutho Uhlobo lombutho Icandelo labucala/Ishishini Izifundo Urhulumente weSizwe Urhulumente wePhondo/weNgingqi Umkhosi Imibutho engenzi nzuzo Imidiya/Ubudlelwane boLuntu Okunye
Ixesha lokuthumela: Okthobha-23-2021