Lub qhov ncauj kab noj hniav yog ib tug complex microecosystem nrog ntau tshaj 23,000 hom kab mob colonizing nws.Hauv qee qhov xwm txheej, cov kab mob no tuaj yeem ua rau cov kab mob hauv qhov ncauj ncaj qha thiab cuam tshuam rau kev noj qab haus huv tag nrho. Txawm li cas los xij, kev siv tshuaj tua kab mob nthuav tawm ntau yam teeb meem, suav nrog kev siv tshuaj sai sai, kev tso tawm, thiab kev txhim kho cov tshuaj tiv thaiv kab mob. Nyob rau hauv xyoo tas los no, kev tshawb fawb tsom tau hloov mus rau kev tsim cov khoom sib xyaw nrog cov khoom siv tshuaj tua kab mob zoo heev uas siv nanomaterials. Tam sim no, nanosilver ion-based antibacterial cov ntaub ntawv thiab graphene-based antibacterial cov ntaub ntawv feem ntau siv hauv khw.Hauv tsab xov xwm no, peb yuav qhia txog graphene antibacterial mechanism thiab daim ntawv thov hauv kev lag luam txhuam hniav.
Graphene yog ob-dimensional carbon nanomaterial li ntawm carbon atoms teem nyob rau hauv ib tug hexagonal lattice nrog sp2 hybridized orbitals.Nws cov derivatives suav nrog graphene (G), graphene oxide (GO), thiab txo graphene oxide (rGO). Lawv muaj qhov tshwj xeeb ntawm peb-dimensional deg cov qauv tshuaj thiab cov qauv ntawm lub cev ntse. Kev tshawb fawb tau pom tias muaj cov kab mob zoo heev thiab biocompatibility ntawm graphene nrog rau nws cov derivatives. Tsis tas li ntawd, lawv ua haujlwm zoo tshaj plaws rau cov khoom siv tshuaj tua kab mob, ua rau lawv zoo siab rau ntau yam kev siv hauv qhov ncauj tshuaj tiv thaiv kab mob.
Qhov zoo ntawmgraphene antibacterial khoom
- Kev nyab xeeb thiab Environmental Friendliness, Non-toxic: Kev siv nanosilver ntev tuaj yeem ua rau muaj kev txhawj xeeb txog kev nyab xeeb vimmuaj peev xwm tsub zuj zuj thiab tsiv teb tsaws. Cov nyiaj ntau ntawm cov nyiaj yuav ua rau muaj kev phom sij rau tib neeg thiab tsiaj txhu, vim nws tuaj yeem nkag mus rau mitochondria, embryos, siab, circulatory systems, thiab lwm qhov ntawm lub cev los ntawm kev ua pa. Cov kev tshawb fawb tau qhia tias nanosilver hais tias muaj zog toxicity piv rau lwm cov hlau nanoparticles xws li txhuas thiab kub. Raws li qhov tshwm sim, European Union tswj hwm kev ceev faj txog kev siv cov ntaub ntawv nanosilver antimicrobial.Qhov sib txawv, graphene-based antimicrobial cov ntaub ntawv siv ntau lub cev ua kom tsis muaj menyuam, xws li "nano-riam." Lawv tuaj yeem rhuav tshem tag nrho thiab inhibit cov kab mob loj hlobtsis muaj tshuaj toxicity. Cov ntaub ntawv no seamlessly ua ke nrog cov ntaub ntawv polymer, thiaj li ua kom ntseeg tautsis muaj khoom detachment los yog tsiv teb tsaws. Kev nyab xeeb thiab kev ruaj ntseg ntawm graphene-raws li cov ntaub ntawv yog zoo guaranteed. Piv txwv li, hauv kev siv cov khoom siv, graphene-raws li PE (polyethylene) zaub mov khaws cia cov yeeb yaj kiab / hnab tau txais ntawv pov thawj rau kev ua raws li cov khoom noj raws li Txoj Cai (EU) 2020/1245 hauv European Union.
- Long-term Stability: Graphene-raws li cov ntaub ntawv qhia superior stability thiab durability, muabcov nyhuv antimicrobial ntev ntev rau ntau tshaj 10 xyoo. Qhov no ua kom lawv cov khoom siv tshuaj tua kab mob tseem muaj txiaj ntsig zoo nyob rau lub sijhawm ntev ntawm kev siv, ua rau lawv tsim nyog rau kev siv mus sij hawm ntev hauv cov khoom siv hauv qhov ncauj.
- Biocompatibility thiab kev nyab xeeb:Graphene, raws li cov khoom siv ob sab ntawm cov pa roj carbon monoxide, nthuav tawm biocompatibility zoo thiab kev nyab xeeb. Nws yog sib xws nrog ntau hom resin-raws li cov ntaub ntawv thiab tuaj yeem siv nyab xeeb hauv cov khoom tu qhov ncauj yam tsis muaj kev cuam tshuam rau cov ntaub so ntswg ntawm qhov ncauj lossis kev noj qab haus huv tag nrho.
- Broad-Spectrum Activity:Graphene-based cov ntaub ntawv nthuav tawm dav-spectrum antimicrobial kev ua haujlwm,muaj peev xwm tsom tau ntau yam kab mob, suav nrog ob hom Gram-positive thiab Gram-negative hom. Lawv tau qhiaantibacterial tus nqi ntawm 99.9%tiv thaiv Escherichia coli, Staphylococcus aureus, thiab Candida albicans. Qhov no ua rau lawv muaj ntau yam thiab siv tau rau ntau yam kev mob ntawm qhov ncauj.
Lub graphene antibacterial mechanism yog raws li nram no:
Antibacterial mechanism ntawm graphenetau kawm ntau yam los ntawm ib pab neeg sib koom tes thoob ntiaj teb. Xws li cov kws tshawb fawb los ntawm Suav Academy ntawm Sciences, IBM Watson Research Center, thiab Columbia University. Lawv tau ua tiav tseem ceeb hauv kev kawm txog cov txheej txheem molecular ntawm kev sib cuam tshuam ntawm graphene thiab cov kab mob cell membranes. Cov ntaub ntawv tsis ntev los no ntawm lub ncauj lus no tau luam tawm hauv phau ntawv journal "Nature Nanotechnology."
Raws li pab pawg neeg tshawb fawb, graphene muaj peev xwm cuam tshuam cov kab mob ntawm cov cell membranes, ua rau kom muaj cov kab mob hauv lub cev thiab cov kab mob tuag. Qhov kev tshawb pom no qhia tias graphene tuaj yeem ua haujlwm tsis zoo rau lub cev "cov tshuaj tua kab mob." Txoj kev tshawb no qhia ntxiv tias graphene tsis tsuas yog ntxig nws tus kheej rau hauv cov kab mob ntawm tes, ua rau txiav, tab sis kuj tshem tawm phospholipid molecules ncaj qha los ntawm daim nyias nyias, yog li cuam tshuam cov txheej txheem membrane thiab tua cov kab mob. Electron microscopy thwmsim tau muab cov pov thawj ncaj qha ntawm cov qauv void nyob rau hauv cov kab mob cell membranes tom qab interacting nrog oxidized graphene, txhawb cov theoretical xam. Qhov no tshwm sim ntawm lipid molecule extraction thiab membrane cuam tshuam muaj ib tug tshiab molecular mechanism rau kev nkag siab txog cytotoxicity thiab antibacterial kev ua ntawm nanomaterials. Nws tseem yuav pab txhawb kev tshawb fawb ntxiv txog cov teebmeem lom ntawm graphene nanomaterials thiab lawv cov kev siv hauv biomedicine.
Daim ntawv thov graphene antibacterial hauv kev lag luam txhuam hniav:
Vim qhov zoo saum toj no ntawm graphene composite cov ntaub ntawv, graphene antibacterial mechanism thiab daim ntawv thov tau nyiam heev los ntawm cov kws tshawb fawb thiab cov kws tshaj lij hauv kev lag luam muaj feem xyuam.
Graphene tshuaj txhuam hniav, qhia los ntawmMARBON pab pawg, siv tshwj xeeb tsim bristles ua los ntawm graphene nanocomposite cov ntaub ntawv. Yog li nws tuaj yeem cuam tshuam qhov kev loj hlob thiab kev loj hlob ntawm cov kab mob, yog li txo qis kev pheej hmoo ntawm cov kab mob hauv qhov ncauj.
Cov bristles yog mos tab sis resilient, tso cai rau maj mam ntxuav ntawm cov hniav thiab cov pos hniav thaum tiv thaiv enamel thiab cov pos hniav noj qab haus huv. Cov txhuam hniav kuj tseem muaj cov qauv tsim ergonomic uas muab kev tuav tau yooj yim thiab siv tau yooj yim.
Peb ntseeg ruaj khov hais tias tus txhuam hniav tshuaj tua kab mob no yuav ua rau muaj kev saib xyuas qhov ncauj tshwj xeeb. Nws tuaj yeem tshem tawm cov quav hniav thiab cov khoom noj khoom haus zoo. Tsis tas li ntawd, nws muab kev tiv thaiv kab mob ntev ntev, ua kom koj lub qhov ncauj noj qab nyob zoo.
Xaus:
Graphene antibacterial toothbrushes sawv cev rau qhov kev nce qib tshiab tshaj plaws hauv kev siv cov khoom siv graphene hauv cov tshuaj tua kab mob. Nrog lawv cov peev xwm loj heev, graphene tshuaj txhuam hniav txhuam hniav tau teeb tsa los hloov kho qhov ncauj, muab cov tib neeg muaj kev noj qab haus huv thiab zoo dua kev saib xyuas qhov ncauj. Raws li kev tshawb fawb cov ntaub ntawv graphene nce zuj zus, graphene tshuaj txhuam hniav txhuam hniav yuav ua lub luag haujlwm tseem ceeb hauv kev txhawb nqa qhov ncauj thiab kev noj qab haus huv.
Post lub sij hawm: May-02-2024