Nazari akan haɗawa da gyarawaCerium oxide nanomaterials
Haɗin kai naceria nanomaterialsya hada da hazo, kwafi, hydrothermal, inji kira, konewa kira, sol gel, micro ruwan shafa fuska da kuma pyrolysis, daga cikin abin da babban kira hanyoyin su ne hazo da hydrothermal. Ana ɗaukar hanyar Hydrothermal hanya mafi sauƙi, mafi tattali, da ƙari kyauta. Babban ƙalubalen hanyar hydrothermal shine sarrafa tsarin halittar nanoscale, wanda ke buƙatar daidaitawa a hankali don sarrafa halayensa.
A gyara naceriyaza a iya inganta ta hanyoyi da yawa: (1) doping sauran karfe ions tare da ƙananan farashi ko ƙananan girma a cikin ceria lattice. Wannan hanya ba za ta iya inganta aikin ƙarfe oxides kawai ba, amma har ma da samar da sababbin kayan barga tare da sababbin kayan jiki da sinadarai. (2) Watsa ceria ko kwatankwacinsa na doped akan kayan jigilar kaya masu dacewa, kamar carbon da aka kunna, graphene, da sauransu.Cerium oxideHakanan zai iya zama mai ɗaukar nauyi don tarwatsa karafa kamar zinariya, platinum, da palladium. Gyaran kayan tushen cerium dioxide galibi yana amfani da karafa na canzawa, ƙarancin alkali / alkali ƙasa karafa, ƙarancin ƙasa, da karafa masu daraja, waɗanda ke da mafi kyawun aiki da kwanciyar hankali.
Aikace-aikace naCerium oxideda Combosite Catalysts
1, Aikace-aikacen nau'ikan nau'ikan halittu daban-daban na ceria
Laura et al. An ruwaito da ƙuduri na nau'ikan nau'ikan zane na Ceria Morphology, waɗanda ke danganci sakamakon maganin alkalimal da hydrothermal magani zuwa ƙarsheCeO2nanostructure ilimin halittar jiki. Sakamakon ya nuna cewa aikin catalytic yana da alaƙa kai tsaye da rabon Ce3+/Ce4+ da sararin sararin samaniyar oxygen. Wei et al. hada uku Pt/CeO2castysts tare da morin dillali daban-daban (sanda kamar (CeO2-R), cubic (CeO2-C), da kuma octahedral (CeO2-O), waɗanda suka dace musamman don ƙarancin zafin jiki na catalytic oxidation na C2H4. Bian et al. shirya jerinCeO2 nanomaterialstare da siffar sanda, cubic, granular, da octahedral morphology, kuma an gano cewa masu kara kuzari sun ɗora akan su.CeO2 nanoparticles(5Ni/NPs) sun nuna mafi girman aiki mai ƙarfi da kwanciyar hankali fiye da masu haɓakawa tare da sauran nau'ikanCeO2goyon baya.
2.Catalytic deradaration na gurɓataccen ruwa a cikin ruwa
Cerium oxidean gane shi azaman ingantacciyar iskar oxygen mai kara kuzari don kawar da zaɓaɓɓun mahadi. Xiao et al. gano cewa Pt nanoparticles suna cikin kusanci daCeO2a saman mai kara kuzari kuma ana yin mu'amala mai ƙarfi, ta haka ne ke haɓaka ayyukan ruɗuwar sararin samaniya da kuma samar da ƙarin nau'ikan iskar oxygen, waɗanda ke ba da gudummawa ga iskar oxygenation na toluene. Zhang Lanhe da sauran su sun shirya maganin kara kuzariCeO2/Al2O3 masu kara kuzari. Doped karfe oxides suna ba da sararin amsawa don amsawa tsakanin mahaɗan kwayoyin halitta da O3, yana haifar da mafi girman aikin haɓakawaCeO2/Al2O3 da karuwa a cikin shafuka masu aiki akan farfajiyar mai kara kuzari
Don haka, bincike da yawa ya nuna hakancerium oxideAbubuwan da ke tattare da kuzari ba wai kawai suna iya haɓaka lalata ƙwayoyin micro gurɓataccen gurɓataccen yanayi ba a fagen kula da ruwan lemun tsami na catalytic, amma kuma suna da tasirin hanawa akan bromate da aka samar a lokacin tsarin katalin sararin samaniya. Suna da fa'idodin aikace-aikace masu fa'ida a cikin maganin ruwan ozone.
3, Catalytic lalacewa na maras tabbas Organic mahadi
CeO2, a matsayin oxide na duniya na yau da kullun, an yi nazari a cikin catalysis multiphase saboda yawan ƙarfin ajiyar iskar oxygen.
Wang et al. hada wani Ce Mn composite oxide tare da siffa mai siffar sanda (Ce/Mn molar ratio na 3:7) ta amfani da hanyar hydrothermal. Mn ions an yi amfani da su a cikinCeO2tsarin don maye gurbin Ce, ta haka yana ƙara yawan guraben oxygen. Kamar yadda Ce4+ aka maye gurbinsu da Mn ions, ana samun ƙarin guraben oxygen, wanda shine dalilin haɓakar ayyukansa. Du et al. haɗewar Mn Ce oxide mai haɓakawa ta amfani da sabuwar hanya ta haɗa hazo redox da hanyoyin hydrothermal. Sun gano cewa rabon manganese daceriumya taka muhimmiyar rawa wajen samuwar mai kara kuzari kuma ya shafi aikinta sosai da ayyukan sa.Ceriuma cikin manganesecerium oxideYana taka muhimmiyar rawa wajen tallata toluene, kuma an nuna manganese yana taka muhimmiyar rawa a cikin iskar oxygenation na toluene. Haɗin kai tsakanin manganese da cerium yana inganta tsarin ɗaukar hoto.
4.Photocatalyst
Sun et al. An yi nasarar shirya Ce Pr Fe-0 @ C ta amfani da hanyar hazo. Ƙayyadaddun tsari shine cewa adadin doping na Pr, Fe, da C suna taka muhimmiyar rawa a ayyukan photocatalytic. Gabatar da adadin da ya dace na Pr, Fe, da C cikinCeO2zai iya inganta ingantaccen aikin photocatalytic na samfurin da aka samu, saboda yana da mafi kyawun adsorption na gurɓataccen abu, mafi inganci sha na hasken da ake iya gani, mafi girman samuwar maɗaurin carbon, da ƙarin guraben oxygen. Ingantattun ayyukan photocatalytic naCeO2-GO nanocomposites shirya ta Ganesan et al. ana danganta shi da ingantaccen yanki mai haɓaka, ƙarfin sha, kunkuntar bandgap, da tasirin amsawar hoto. Liu et al. gano cewa Ce/CoWO4 composite catalyst shine ingantaccen photocatalyst tare da yuwuwar ƙimar aikace-aikacen. Petrovic et al. shiryaCeO2masu kara kuzari ta hanyar amfani da madaidaiciyar hanyar electrodeposition na yanzu kuma an canza su tare da matsa lamba na yanayi mara zafi mai bugun jini na corona. Dukansu gyare-gyaren plasma da kayan da ba a canza su ba suna nuna kyakkyawan ikon haɓakawa a cikin tsarin lalata plasma da photocatalytic.
Kammalawa
Wannan labarin yayi nazari akan tasirin hanyoyin haɗin gwiwarcerium oxidea kan barbashi ilimin halittar jiki, da muhimmancin ilimin halittar jiki a kan surface Properties da catalytic aiki, kazalika da synergistic sakamako da aikace-aikace tsakanincerium oxideda dopants da dillalai. Ko da yake an yi nazari da yawa kuma an yi amfani da sinadarin cerium oxide a fagen katange, kuma an sami ci gaba sosai wajen magance matsalolin muhalli kamar yadda ake kula da ruwa, har yanzu akwai matsaloli masu yawa a aikace, kamar ba a fayyace ba.cerium oxideilmin halittar jiki da tsarin lodawa na cerium yana tallafawa masu kara kuzari. Ana buƙatar ƙarin bincike akan hanyar haɗin gwiwar masu haɓakawa, haɓaka tasirin haɗin gwiwa tsakanin abubuwan haɗin gwiwa, da kuma nazarin tsarin haɓakar kaya daban-daban.
Marubucin jarida
Shandong Ceramics 2023 Fitowa ta 2: 64-73
Marubuta: Zhou Bin, Wang Peng, Meng Fanpeng, da dai sauransu
Lokacin aikawa: Nuwamba-29-2023