Njengamanje, kokubili ukukhiqizwa kanye nokusetshenziswa kwama-nanomaterials kudonse ukunaka kwamazwe ahlukahlukene. I-nanotechnology yaseChina iyaqhubeka nokuthuthuka, futhi ukukhiqizwa kwezimboni noma ukukhiqizwa kwesilingo kwenziwe ngempumelelo ku-nanoscale SiO2, TiO2, Al2O3, ZnO2, Fe2O3 nezinye izinto zempushana. Kodwa-ke, inqubo yamanje yokukhiqiza kanye nezindleko eziphezulu zokukhiqiza ubuthakathaka bayo obubulalayo, obuzothinta ukusetshenziswa okubanzi kwama-nanomaterials. Ngakho-ke, ukuthuthukiswa okuqhubekayo kuyadingeka.
Ngenxa yesakhiwo esikhethekile se-elekthronikhi kanye ne-athomu enkulu ye-athomu yezakhi zomhlaba ezingavamile, izakhiwo zabo zamakhemikhali zihluke kakhulu kwezinye izakhi. Ngakho-ke, indlela yokulungiselela kanye nobuchwepheshe bangemva kokwelashwa kwe-nano oxides yomhlaba engavamile nayo ihlukile kwezinye izakhi. Izindlela zocwaningo eziyinhloko zihlanganisa:
1. Indlela yemvula: kufaka phakathi i-oxalic acid precipitation, i-carbonate precipitation, i-hydroxide precipitation, i-homogeneous precipitation, i-complexation precipitation, njll. Isici esikhulu kunazo zonke sale ndlela ukuthi isixazululo se-nucleates ngokushesha, kulula ukulawula, imishini ilula, futhi ingakhiqiza imikhiqizo ehlanzekile kakhulu. Kodwa kunzima ukuhlunga futhi kulula ukuhlanganisa.
2. Indlela ye-Hydrothermal: Sheshisa futhi uqinise ukusabela kwe-hydrolysis yama-ion ngaphansi kwezimo eziphakeme zokushisa nezingcindezi, futhi wenze ama-nanocrystalline nuclei ahlakazekile. Le ndlela ingathola ama-nanometer powders ngokuhlakazeka okufanayo kanye nokusabalalisa usayizi wezinhlayiyana ezincane, kodwa kudinga izinga lokushisa eliphezulu kanye nemishini yokucindezela okukhulu, ebizayo futhi engaphephile ukusebenza.
3. Indlela yejeli: Iyindlela ebalulekile yokulungiselela izinto ezingaphili, futhi idlala indima ebalulekile ekuhlanganiseni izinto ezingaphili. Emazingeni okushisa aphansi, ama-organometallic compounds noma ama-organic complexes angakha i-sol ngokusebenzisa i-polymerization noma i-hydrolysis, futhi yakhe ijeli ngaphansi kwezimo ezithile. Ukwelashwa okwengeziwe kokushisa kungakhiqiza ama-noodle Elayisi e-ultrafine anendawo enkulu ethize kanye nokuhlakazeka okungcono. Le ndlela ingenziwa ngaphansi kwezimo ezithambile, okuholela ekubeni impushana enendawo enkulu kanye ne-dispersibility engcono. Nokho, isikhathi sokusabela side futhi kuthatha izinsuku ezimbalwa ukuqeda, okwenza kube nzima ukuhlangabezana nezidingo zemboni.
4. Indlela yesigaba esiqinile: ukubola kwezinga lokushisa eliphezulu kwenziwa ngokusebenzisa izinhlanganisela eziqinile noma ukusabela kwesigaba esiqinile esimaphakathi. Isibonelo, i-earth nitrate ne-oxalic acid zixutshwa ukugaya kwebhola lesigaba esiqinile ukuze kwakheke indawo emaphakathi ye-oxalate yomhlaba eyivelakancane, ebese iboliswa ngezinga lokushisa eliphezulu ukuze kutholwe impushana ye-ultrafine. Le ndlela inezinga eliphezulu lokusabela kahle, okokusebenza okulula, nokusebenza okulula, kodwa impushana ewumphumela ine-morphology engavamile kanye nokufana okungekuhle.
Lezi zindlela azihlukile futhi zingase zingasebenzi ngokugcwele ekuthuthukisweni kwezimboni. Kukhona nezindlela eziningi zokulungiselela, njenge-organic microemulsion method, i-alcoalysis, njll.
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Isikhathi sokuthumela: Apr-06-2023