Ukuqonda Umehluko Phakathi kwe-TiO2 Rutile ne-Anatase

 I-Titanium dioxide(TiO2) i-pigment eguquguqukayo esetshenziswa ezimbonini ezahlukahlukene, kufaka phakathi amapende, ama-coatings, amapulasitiki nezimonyo. Itholakala ngezindlela ezimbili eziyinhloko zekristalu: i-rutile ne-anatase. Ukuqonda umehluko phakathi kwalawa mafomu amabili kubalulekile ekukhetheni uhlobo olulungile lwe-TiO2 kuhlelo lokusebenza oluthile.

I-Rutile ne-anatase zombili izinhlobo ze-titanium dioxide, kodwa zinezakhiwo ezihlukene ezizenza zifanelekele ukusetshenziswa okuhlukile. I-Rutile yaziwa ngokumelana kwayo ne-UV okuhle kakhulu kanye nokumelana nesimo sezulu, okuyenza ibe yinketho ethandwayo ezinhlelweni zangaphandle ezinjengamapende angaphandle nama-coatings. I-Anatase, ngakolunye uhlangothi, ihlonishwa ngomsebenzi wayo ophezulu we-photocatalytic, okwenza ilungele izinhlelo zokusebenza ezifana nezingubo zokuzihlanza kanye nezinhlelo zokuhlanza umoya.

Omunye umehluko omkhulu phakathi kwe-rutile ne-anatase isakhiwo sabo se-crystal. I-Rutile ine-tetragonal crystal structure, kuyilapho i-anatase inokwakheka kwekristalu ye-orthorhombic eyinkimbinkimbi. Lo mehluko wesakhiwo uholela ekushintsheni kwezakhiwo zabo ezingokomzimba namakhemikhali, ekugcineni kuthinte ukusebenza kwazo ezinhlelweni ezahlukene.

Mayelana nezakhiwo ze-optical,i-rutile TiO2inenkomba ye-refractive ephakeme kanye ne-opacity kune-anatase. Lokhu kwenza i-rutile ibe inketho yokuqala yezinhlelo zokusebenza lapho ukufiphala nokukhanya kubaluleke kakhulu, njengamapende amhlophe nama-coatings. I-Anatase, ngakolunye uhlangothi, inenkomba ephansi ye-refractive futhi ivame ukusetshenziswa ezinhlelweni lapho kudingekile ukucaca nokucaca, njengama-coatings acacile nama-sunscreens.

Enye into ebalulekile okufanele icatshangelwe lapho ukhetha phakathi kwe-rutile ne-anatase TiO2 umsebenzi wabo we-photocatalytic. I-Anatase inokusebenza kahle okuphezulu kwe-photocatalytic kune-rutile, iyenza ifaneleke izinhlelo zokusebenza ezidinga izakhiwo zokuzihlanza kanye nezokwehlisa ukungcoliswa komhlaba. Le ndawo iholele ekusetshenzisweni kwe-anatase titanium dioxide emikhiqizweni efana nezingilazi ezizihlanzayo, izinhlelo zokuhlanza umoya kanye nezingubo zokulwa namagciwane.

Kuyaphawuleka ukuthi izinqubo zokukhiqiza rutile TiO2 futhii-TiO2zingahluka, okuholela ekwehlukeni kosayizi wabo wezinhlayiyana, indawo engaphezulu, kanye nezici ze-agglomeration. Lezi zici zingathinta ukusakazeka, ukuzinza kanye nokusebenza kwe-TiO2 ekwenziweni okuhlukile, kuphinde kugcizelele ukubaluleka kokukhetha uhlobo olulungile lohlelo lokusebenza oluthile.

Kafushane, umehluko phakathi kwe-rutile TiO2 ne-anatase TiO2 udlulela ngalé kwezinhlaka zazo zekristalu ukuya ezimpahleni zazo zokubona, ze-photocatalytic, nezokucubungula. Ukuqonda lo mehluko kubalulekile ekwenzeni izinqumo ezinolwazi lapho ukhetha i-TiO2 yezinhlelo zokusebenza ezihlukahlukene. Ngokukhetha uhlobo olufanele lwe-titanium dioxide, abakhiqizi bangathuthukisa ukusebenza nokusebenza kwemikhiqizo yabo, ekugcineni bahlangabezane nezimfuneko ezithile zabasebenzisi bokugcina.