Ithute ka ho kopanya le ho fetolaCerium oxide nanomatadium
The synthesis ofceria nanomatadiume kenyelletsa pula, ho nyenyefatsa, ho futhumatsa metsi, ho kopanya ha mechine, motsoako oa ho tuka, sol gel, micro lotion le pyrolysis, tseo har'a tsona mekhoa e meholo ea ho kopanya e leng pula le hydrothermal. Mokhoa oa Hydrothermal o nkuoa e le mokhoa o bonolo ka ho fetisisa, o nang le chelete e ngata ebile o tlatselletsa. Bothata bo boholo ba mokhoa oa hydrothermal ke ho laola morphology ea nanoscale, e hlokang phetoho e hlokolosi ho laola litšobotsi tsa eona.
Phetoho eaceriae ka ntlafatsoa ka mekhoa e 'maloa: (1) doping li-ion tse ling tsa tšepe ka theko e tlase kapa boholo bo nyane ka har'a ceria lattice. Mokhoa ona o ke ke oa ntlafatsa feela ts'ebetso ea li-oxide tsa tšepe tse amehang, empa hape o theha lisebelisoa tse ncha tse tsitsitseng tse nang le lisebelisoa tse ncha tsa 'mele le lik'hemik'hale. (2) Hlakola ceria kapa li-analogue tsa eona tse nang le doped holim'a lisebelisoa tse tsamaisang tse loketseng, joalo ka khabone e kentsoeng, graphene, jj.Cerium oxidee ka boela ea sebetsa e le sesebelisoa sa ho qhalakanya litšepe tse kang khauta, platinum le palladium. Phetoho ea thepa e thehiloeng ho cerium dioxide haholo-holo e sebelisa litšepe tsa phetoho, litšepe tse sa tloaelehang tsa alkali / alkali ea lefats'e, lirafshoa tse sa tloaelehang tsa lefatše, le lirafshoa tsa bohlokoa, tse nang le ts'ebetso e ntle le botsitso ba mocheso.
Kopo eaCerium oxidele Composite Catalysts
1, Ts'ebeliso ea li-morphology tse fapaneng tsa ceria
Laura le ba bang. e tlalehile boikemisetso ba mefuta e meraro ea ceria morphology phase diagrams, e amanang le liphello tsa mahloriso a alkali le mocheso oa phekolo ea hydrothermal ho fihlela qetellong.CeO2nanostructure morpholoji. Liphetho li bonts'a hore ts'ebetso ea catalytic e amana ka kotloloho le karo-karolelano ea Ce3+/Ce4+ le mahloriso a sebaka sa oksijene ea holim'a metsi. Wei et al. synthesized tse tharo Pt/CeO2li-catalysts tse nang le li-morphology tse fapaneng tsa carrier (molamu joalo ka)CeO2-R), likhubiki (CeO2-C), le octahedral (CeO2-O), tse loketseng ka ho khetheha bakeng sa mocheso o tlase oa catalytic oxidation ea C2H4. Bian le ba bang. lokisetsa letoto laCeO2 nanomatadiume nang le sebopeho sa molamu, cubic, granular, le octahedral morphology, mme e fumane hore li-catalyst li kentsoeCeO2 nanoparticles(5Ni/NPs) e bonts'itse ts'ebetso e phahameng haholo le botsitso bo betere ho feta li-catalysts le mefuta e meng eaCeO2tshehetso.
2. Ho senyeha ha lintho tse silafatsang metsing
Cerium oxidee 'nile ea hlokomeloa e le mohloli o sebetsang oa ozone oxidation bakeng sa ho tlosoa ha metsoako ea tlhaho e khethiloeng. Xiao et al. e fumane hore Pt nanoparticles e amana haufi-ufi leCeO2ka holim'a li-catalyst le ho sebelisana ka matla, ka hona ho ntlafatsa ts'ebetso ea ho bola ea ozone le ho hlahisa mefuta e mengata ea oksijene e sebetsang, e tlatsetsang ho oxidation ea toluene. Zhang Lanhe le ba bang ba lokiselitse dopedCeO2/Al2O3 li-catalysts. Li-oxide tsa tšepe tse entsoeng ka tšepe li fana ka sebaka sa karabelo pakeng tsa metsoako ea manyolo le O3, e leng se bakang ts'ebetso e phahameng ea ts'ebetso.CeO2/Al2O3 le keketseho ea libaka tse sebetsang sebakeng sa catalyst
Ka hona, liphuputso tse ngata li bontšitse seocerium oxideli-catalyst tse kopantsoeng li ke ke tsa ntlafatsa feela ho senyeha ha lintho tse silafatsang tsa organic tse recalcitrant tšimong ea catalytic ozone kalafo ea metsi a litšila, empa hape li na le litlamorao tse thibelang bromate e hlahisoang nakong ea ts'ebetso ea ozone. Ba na le menyetla e pharaletseng ea ts'ebeliso ea phekolo ea metsi a ozone.
3, Ho senyeha ho hoholo ha metsoako ea lintho tse phelang
CeO2, e le oxide e tloaelehileng e sa tloaelehang ea lefats'e, e 'nile ea ithutoa ka multiphase catalysis ka lebaka la matla a eona a phahameng a ho boloka oksijene.
Wang et al. e entsoeng Ce Mn composite oxide e nang le morphology ea sebōpeho sa molamu (Ce/Mn molar ratio ea 3:7) e sebelisa mokhoa oa hydrothermal. Li-ion tse limilione li ile tsa kenngoa ka har'aCeO2moralo oa ho nkela Ce sebaka, ka hona ho eketsa bongata ba likheo tsa oksijene. Ha Ce4 + e nkeloa sebaka ke Mn ions, likheo tse ngata tsa oksijene li thehoa, e leng lebaka la ts'ebetso ea eona e phahameng. Du et al. li-catalysts tsa Mn Ce oxide tse entsoeng ka mokhoa o mocha o kopanyang pula ea redox le mekhoa ea hydrothermal. Ba fumane hore karo-karolelano ea manganese leceriume phethile karolo ea bohlokoa ho thehoeng ha catalyst mme ea ama ts'ebetso ea eona le ts'ebetso ea eona haholo.Ceriumka manganesecerium oxidee bapala karolo ea bohlokoa ho kenyelletsong ea toluene, 'me manganese e bonts'itsoe e bapala karolo ea bohlokoa ho oxidation ea toluene. Khokahano lipakeng tsa manganese le cerium e ntlafatsa ts'ebetso ea karabelo ea catalytic.
4.Photocatalyst
Letsatsi le al. ho lokisitsoe ka katleho Ce Pr Fe-0 @ C ho sebelisa mokhoa oa co precipitation. Mokhoa o khethehileng ke hore palo ea doping ea Pr, Fe, le C e phetha karolo ea bohlokoa mosebetsing oa photocatalytic. Ho hlahisa palo e nepahetseng ea Pr, Fe, le C hoCeO2e ka ntlafatsa haholo ts'ebetso ea photocatalytic ea sampole e fumanoeng, hobane e na le mokhoa o betere oa ho monyela litšila tse silafatsang, ho monya leseli le bonoang ka katleho, sekhahla se phahameng sa sebopeho sa lihlopha tsa khabone, le likheo tse ngata tsa oksijene. Ts'ebetso e ntlafalitsoeng ea photocatalytic eaCeO2-GO nanocomposites e lokisitsoeng ke Ganesan et al. e amahanngoa le sebaka se ntlafetseng, matla a ho monya, lekhalo le moqotetsane, le litlamorao tsa photoresponse. Liu et al. e fumane hore Ce/CoWO4 composite catalyst ke photocatalyst e sebetsang hantle haholo e nang le boleng ba kopo. Petrovic le ba bang. lokisitsoeCeO2li-catalysts tse sebelisang mokhoa oa hajoale oa electrodeposition le ho li fetola ka khatello ea sepakapaka e seng ea mocheso e pulsating corona plasma. Lisebelisoa ka bobeli tsa plasma tse fetotsoeng le tse sa fetoloang li bonts'a bokhoni bo botle ba ho thusa ho plasma le lits'ebetsong tsa ho senyeha ha photocatalytic.
Qetello
Sehlooho sena se hlahloba tšusumetso ea mekhoa ea ho kopanya eacerium oxidemabapi le particle morphology, karolo ea morpholoji holim'a thepa ea bokaholimo le ts'ebetso ea matla, hammoho le phello ea synergistic le ts'ebeliso lipakeng tsacerium oxidele li-dopants le bajari. Le hoja li-catalysts tse thehiloeng ho cerium oxide li 'nile tsa ithutoa ka ho pharaletseng le ho sebelisoa tšimong ea catalysis,' me li entse tsoelo-pele e kholo ho rarolla mathata a tikoloho a kang ho hloekisa metsi, ho ntse ho e-na le mathata a mangata a sebetsang, a kang a sa hlakang.cerium oxidemorphology le mokhoa oa ho kenya li-catalysts tse tšehetsoeng ke cerium. Ho hlokahala lipatlisiso tse ling mabapi le mokhoa oa ho kopanya li-catalysts, ho ntlafatsa phello ea synergistic lipakeng tsa likarolo, le ho ithuta mokhoa oa catalytic oa meroalo e fapaneng.
Mongoli oa koranta
Shandong Ceramics 2023 Taba ea 2: 64-73
Bangoli: Zhou Bin, Wang Peng, Meng Fanpeng, joalo-joalo
Nako ea poso: Nov-29-2023