Niaj hnub no peb xav qhia qee cov tshuaj tua kab mob siv cov khoom siv nanoparticles raws li hauv qab no:

1. Nano nyiaj

Antibacterial txoj cai ntawm nano silver khoom

(1).Hloov cov permeability ntawm cell membrane.Kev kho cov kab mob nrog nano nyiaj tuaj yeem hloov pauv permeability ntawm cell membrane, ua rau poob ntau cov as-ham thiab metabolites, thiab thaum kawg ntawm tes tuag;

(2).Silver ion ua rau DNA puas

(3).Txo kev ua haujlwm dehydrogenase.

(4).oxidative kev nyuaj siab.Nano nyiaj tuaj yeem ntxias cov hlwb los tsim ROS, uas txo cov ntsiab lus ntawm txo coenzyme II (NADPH) oxidase inhibitors (DPI), ua rau kev tuag ntawm tes.

Cov khoom muaj feem xyuam: Nano nyiaj hmoov, xim nyiaj dawb los tiv thaiv kab mob ua kua, pob tshab silver antibacterial kua

2.Nano zinc oxide 

Muaj ob txoj kev tiv thaiv kab mob ntawm nano-zinc oxide ZNO:

(1).Photocatalytic antibacterial mechanism.Ntawd yog, nano-zinc oxide tuaj yeem decompose tsis zoo them electrons hauv dej thiab huab cua nyob rau hauv irradiation ntawm lub hnub ci, tshwj xeeb tshaj yog ultraviolet lub teeb, thaum tawm hauv qhov zoo them qhov, uas tuaj yeem txhawb cov pa hloov pauv hauv huab cua.Nws yog active oxygen, thiab nws oxidizes nrog ntau yam kab mob, yog li tua cov kab mob.

(2).Cov tshuaj tua kab mob ntawm cov hlau ion dissolution yog tias zinc ions yuav maj mam tso tawm.Thaum nws los rau hauv kev sib cuag nrog cov kab mob, nws yuav ua ke nrog cov active protease nyob rau hauv cov kab mob ua rau nws inactive, yog li tua cov kab mob.

3. Nano titanium oxide

Nano-titanium dioxide decomposes cov kab mob nyob rau hauv qhov kev txiav txim ntawm photocatalysis kom ua tiav cov nyhuv antibacterial.Txij li cov qauv hluav taws xob ntawm nano-titanium dioxide yog tus cwj pwm los ntawm tag nrho TiO2 valence band thiab qhov khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob tshaj nws qhov sib txawv band.Muaj sijhawm.Cov hluav taws xob tuaj yeem zoo siab los ntawm valence band mus rau qhov kev sib txuas, thiab cov qhov sib thooj yog tsim nyob rau hauv valence band, uas yog, electron thiab qhov khub yog generated.Nyob rau hauv qhov kev txiav txim ntawm hluav taws xob teb, cov electrons thiab qhov yog sib cais thiab tsiv mus nyob rau txawv txoj hauj lwm ntawm particle nto.Ib qho kev tshwm sim tshwm sim.Cov pa oxygen nyob rau saum npoo ntawm TiO2 adsorbs thiab ntxiab electrons los ua O2, thiab cov superoxide anion radicals reacts (oxidize) nrog rau feem ntau cov organic tshuaj.Nyob rau tib lub sijhawm, nws tuaj yeem cuam tshuam nrog cov organic teeb meem hauv cov kab mob los tsim CO2 thiab H2O;Thaum lub qhov oxidize OH thiab H2O adsorbed rau saum npoo ntawm TiO2 rau · OH, · OH muaj zog oxidizing muaj peev xwm, tawm tsam cov unsaturated bonds ntawm organic teeb meem los yog extracting H Atoms tsim tshiab dawb radicals, ua ib tug saw cov tshuaj tiv thaiv, thiab thaum kawg ua rau cov kab mob kom decompose.

4. Nano tooj liab,nano tooj liab oxide, nano khob oxide

Qhov zoo ntawm tooj liab nanoparticles thiab cov kab mob tsis zoo ua rau cov tooj liab nanoparticles tuaj rau hauv kev sib cuag nrog cov kab mob los ntawm tus nqi attraction, thiab tom qab ntawd cov tooj liab nanoparticles nkag mus rau cov kab mob ntawm cov kab mob, ua rau cov kab mob cell phab ntsa tawg thiab cov kua dej ntawm tes. tawm.Kev tuag ntawm cov kab mob;cov nano-tooj ​​liab uas nkag mus rau hauv lub cell tib lub sij hawm tuaj yeem cuam tshuam nrog cov protein enzymes hauv cov kab mob hauv cov kab mob, kom cov enzymes yog denatured thiab inactivated, yog li tua cov kab mob.

Ob qho khoom siv tooj liab thiab tooj liab muaj cov tshuaj tua kab mob, qhov tseeb, lawv yog txhua tus tooj liab ions hauv kev ua kom tsis muaj menyuam.

Qhov me me particle loj, qhov zoo dua cov nyhuv antibacterial nyob rau hauv cov nqe lus ntawm cov khoom siv tshuaj tua kab mob, uas yog cov nyhuv me me.

5. Graphene

Cov tshuaj tua kab mob ntawm cov khoom siv graphene feem ntau suav nrog plaub lub tswv yim:

(1).Lub cev puncture los yog "nano riam" txiav mechanism;

(2).Cov kab mob/membrane puas los ntawm oxidative kev nyuaj siab;

(3).Transmembrane thauj thaiv thiab / lossis kab mob loj hlob los ntawm txheej txheej;

(4).Lub cell membrane tsis ruaj khov los ntawm kev ntxig thiab rhuav tshem cov khoom siv cell membrane.

Raws li kev sib txuas lus sib txawv ntawm cov ntaub ntawv graphene thiab cov kab mob, cov lus hais saum toj no muaj ntau lub tswv yim sib koom ua ke ua rau kev puas tsuaj tag nrho ntawm cov cell membranes (bactericidal effect) thiab inhibit qhov kev loj hlob ntawm cov kab mob (bacteriostatic effect).