I-Titanium dioxide (i-TiO2) i-pigment emhlophe esetshenziswa kabanzi ezimbonini ezihlukahlukene, okuhlanganisa upende, okokuhlanganisa, amapulasitiki nezimonyo. Itholakala ezinhlakeni ezihlukene zekristalu, izinhlobo ezimbili ezivame kakhulu i-anatase ne-rutile. Ukuqonda umehluko phakathi kwalezi zinhlobo ezimbili ze-TiO2 kubalulekile ekukhetheni umbala olungile wohlelo oluthile.
I-Anatase ne-rutile ama-polymorphs e-TiO2, okusho ukuthi anokwakheka kwamakhemikhali okufanayo kodwa izakhiwo zekristalu ezihlukene, okuholela ezicini ezihlukahlukene nezici zokusebenza. Omunye umehluko omkhulu phakathii-TiO2futhi i-rutile TiO2 iyisakhiwo sabo sekristalu. I-Anatase inokwakheka kwe-tetragonal, kuyilapho i-rutile inesakhiwo esiminyene se-tetragonal. Lo mehluko wesakhiwo uholela ekushintsheni kwezakhiwo zabo zomzimba namakhemikhali.
Ngokuya ngezindawo zokubona, i-rutile TiO2 inenkomba ephezulu yokuphinda iphinde ikhanye futhi icace kakhulu kune-anatase TiO2. Lokhu kwenza i-rutile TiO2 ibe yinketho yokuqala yezinhlelo zokusebenza ezidinga ukukhanya okuphezulu nokuba mhlophe, njengopende nama-coatings. I-Anatase titanium dioxide, ngakolunye uhlangothi, yaziwa ngomsebenzi wayo omuhle kakhulu we-photocatalytic, ukuyenza ifanelekele okokuvikela imvelo nokuzihlanza kanye nezinhlelo zokusebenza zokuvikela i-UV.
Esinye isici esibalulekile okufanele sicatshangelwe lapho uqhathanisa i-anatase ne-rutile TiO2 ubukhulu bezinhlayiyana zabo nendawo engaphezulu. I-Anatase TiO2 ivamise ukuba nendawo enkulu kanye nosayizi wezinhlayiyana ezincane, okunikela ekusebenzeni kwayo okuphakeme nokusebenza kwe-photocatalytic.I-Rutile TiO2, ngakolunye uhlangothi, inokusabalalisa usayizi wezinhlayiyana ezifanayo kanye nendawo engaphansi, okwenza ifaneleke kakhulu izinhlelo zokusebenza lapho ukuhambisana kosayizi wezinhlayiyana kubaluleke kakhulu, njengamapulasitiki nezimonyo.
Kuyafaneleka futhi ukuqaphela ukuthi izinqubo zokukhiqiza ze-anatase ne-rutile TiO2 zingase zibangele izinguquko ekuhlanzekeni kwazo kwamakhemikhali kanye nokwelashwa kwendawo. Lezi zici zithinta ukuhlakazeka kwazo, ukuhambisana nezinye izithako, kanye nokusebenza kukonke ekwakhekeni okuhlukile.
Kafushane, kuyilapho kokubilianatase futhi rutile TiO2ziyimibala emhlophe eyigugu enezakhiwo eziyingqayizivele, ukuqonda umehluko wabo kubalulekile ekukhetheni uhlobo olufanele lohlelo oluthile. Kungakhathaliseki ukuthi isidingo sokucwala okuphezulu nokuba mhlophe kumapende nama-coatings noma isidingo somsebenzi ophakeme we-photocatalytic kuma-coatings ahambisana nemvelo, ukukhetha phakathi kwe-anatase ne-rutile TiO2 kungathinta kakhulu ukusebenza nokusebenza komkhiqizo wokugcina . Ngokucabangela isakhiwo se-crystal, izakhiwo ze-optical, usayizi wezinhlayiya kanye nezindawo ezingaphezulu zefomu ngalinye, abakhiqizi nabakhi bangenza izinqumo ezinolwazi ukuze bafinyelele imiphumela oyifunayo ekubunjweni kwabo.
Isikhathi sokuthumela: Sep-10-2024