Ọmụmụ na njikọ na mgbanweCerium oxide nanomaterials
Njikọ nkeceria nanomaterialsgụnyere mmiri ozuzo, nchikota, hydrothermal, n'ibu njikọ, combustion synthesis, sol gel, micro ude mmiri na pyrolysis, n'ime ndị bụ isi synthesis ụzọ bụ mmiri ozuzo na hydrothermal. A na-ahụta usoro hydrothermal dị ka ụzọ kachasị mfe, nke kacha baa uru na nke enweghị mgbakwunye. Isi ihe ịma aka nke usoro hydrothermal bụ ijikwa nanoscale morphology, nke chọrọ ngbanwe nke ọma iji chịkwaa njirimara ya.
The mgbanwe nkeceriaenwere ike ịkwalite site na ụzọ dị iche iche: (1) doping ion metal ndị ọzọ nwere ọnụ ala dị ala ma ọ bụ nha pere mpe na ceria lattice. Usoro a nwere ike ọ bụghị naanị melite arụmọrụ nke metal oxides gụnyere, ma na-etolite ọhụrụ kwụsiri ike ihe na ọhụrụ anụ ahụ na chemical Njirimara. (2) Gbasaa ceria ma ọ bụ analogues doped ya n'elu ihe ndị na-ebu ebu, dị ka carbon arụ ọrụ, graphene, wdg.Cerium oxidenwekwara ike ije ozi dị ka onye na-ebufe ọla dị ka ọla edo, platinum, na palladium. Mgbanwe nke ihe ndị dabere na cerium dioxide na-ejikarị ọla mgbanwe, ọla alkali / alkali na-adịghị ahụkebe, ọla ụwa na-adịghị ahụkebe, na ọla dị oke ọnụ ahịa, nke nwere ọrụ ka mma yana nkwụsi ike ọkụ.
Ngwa nkeCerium oxidena ihe mgbagwoju anya mejupụtara
1, Ngwa nke dị iche iche morphologies nke ceria
Laura et al. kọrọ mkpebi nke ụdị atọ nke ceria morphology usoro eserese, nke metụtara mmetụta nke ịta alkali na okpomọkụ ọgwụgwọ hydrothermal na ikpeazụ.CeO2nanostructure morphology. Nsonaazụ na-egosi na ọrụ catalytic nwere njikọ chiri anya na oke Ce3+/Ce4+ yana itinye uche ohere ikuku oxygen. Wei et al. synthesized atọ Pt/CeO2ihe na-akpali akpali nwere ụdị ọdịdị dị iche iche nke ebu (mkpanaka dị ka (CeO2-R), cubic (CeO2-C), na octahedral (CeO2-O), nke dabara adaba maka obere okpomọkụ catalytic oxidation nke C2H4. Bian et al. kwadebere usoroCeO2 nanomaterialsnwere ụdị mkpara, cubic, granular, na octahedral morphology, wee chọpụta na ihe na-eme ka ọ dị elu.CeO2 nanoparticles(5Ni/NPs) gosipụtara ọrụ catalytic dị elu yana nkwụsi ike ka mma karịa ihe na-akpali akpali na ụdị ndị ọzọ.CeO2nkwado.
2.Catalytic mmebi nke mmetọ na mmiri
Cerium oxidea matala dị ka ihe na-eme ka ozone oxidation dị irè maka iwepụ ogige organic ahọpụtara. Xiao et al. chọpụtara na Pt nanoparticles na-akpachi anyaCeO2n'elu ihe na-akpali akpali ma na-enwe mmekọrịta siri ike, si otú ahụ na-emeziwanye ọrụ nkwụsị nke ozone ma na-emepụta ụdị oxygen ọzọ na-arụ ọrụ, nke na-enye aka na oxidation nke toluene. Zhang Lanhe na ndị ọzọ kwadebere dopedCeO2/ Al2O3 na-eme ka ọ pụta ìhè. Doped metal oxides na-enye ohere mmeghachi omume maka mmeghachi omume n'etiti ogige organic na O3, na-ebute arụmọrụ catalytic dị elu.CeO2/Al2O3 na mmụba na saịtị ndị na-arụ ọrụ n'elu ihe na-akpali akpali
Ya mere, ọtụtụ nnyocha gosiri nacerium oxideIhe na-eme ka ihe mejupụtara ya nwere ike ọ bụghị naanị ịkwalite mmebi nke ihe ndị na-eme ka ihe ndị na-eme ihe na-eme ihe na-eme ka ihe ndị na-eme ihe na-eme ihe na-eme ka mmiri dị na mmiri na-ekpo ọkụ na-eme ka ozone, ma na-enwekwa mmetụta mgbochi na bromate nke emepụtara n'oge usoro catalytic ozone. Ha nwere atụmanya ngwa ngwa na ọgwụgwọ ozone.
3, Catalytic mmebi nke ogige organic na-adịghị agbanwe agbanwe
CeO2, dị ka ihe na-adịghị ahụkebe ụwa oxide, a mụọla na multiphase catalysis n'ihi nnukwu ike nchekwa oxygen ya.
Wang et al. synthesized a Ce Mn composite oxide nwere usoro mkpara dị ka morphology (Ce/Mn molar ratio nke 3:7) site na iji usoro hydrothermal. A na-etinye ion ndị mmadụ n'imeCeO2kpuchie iji dochie Ce, si otú ahụ na-amụba ịta nke ohere oxygen. Ka Ce4+ na-anọchi anya Mn ions, a na-emepụta ọtụtụ ohere ikuku oxygen, nke bụ ihe kpatara ọrụ ya dị elu. Du et al. synthesized Mn Ce oxide catalysts na-eji usoro ọhụrụ na-ejikọta mmiri ozuzo redox na ụzọ hydrothermal. Ha chọpụtara na oke nke manganese naceriumkeere òkè dị oke mkpa n'ịmepụta ihe na-eme ihe ma na-emetụta arụmọrụ ya na ọrụ catalytic.Ceriumna manganesecerium oxidena-arụ ọrụ dị oke mkpa na mgbasa ozi nke toluene, na manganese egosila na ọ na-ekere òkè dị mkpa na oxidation nke toluene. Nchikota n'etiti manganese na cerium na-eme ka usoro mmeghachi omume catalytic dịkwuo mma.
4. Onye na-ese foto
Sun et al. Ce Pr Fe-0 @ C kwadoro nke ọma site na iji usoro mmiri ozuzo. Usoro a kapịrị ọnụ bụ na ọnụọgụ doping nke Pr, Fe, na C na-arụ ọrụ dị mkpa na ọrụ photocatalytic. Na-ewebata ego kwesịrị ekwesị nke Pr, Fe, na C n'imeCeO2nwere ike imeziwanye arụmọrụ fotocatalytic nke ihe nlele enwetara nke ọma, n'ihi na ọ na-enwe mgbasawanye nke mmetọ nke ọma, nnabata ọkụ a na-ahụ anya nke ọma, ọnụ ọgụgụ dị elu nke ikuku carbon, yana ohere ikuku oxygen. Ọrụ photocatalytic emelitere nkeCeO2-GO nanocomposites kwadebere site Ganesan et al. a na-ekwu na ọ bụ n'elu ebe a na-emewanyewanyewanye, ike nke absorption, bandgap dị warara, na mmetụta nzaghachi nke elu. Liu et al. chọpụtara na Ce/CoWO4 composite catalyst bụ fotocatalyst na-arụ ọrụ nke ọma nke nwere uru ngwa nwere ike. Petrovic et al. kwadebereCeO2ihe na-akpali akpali na-eji usoro electrodeposition dị ugbu a mgbe niile wee gbanwee ha site na nrụgide ikuku na-adịghị ekpo ọkụ na-akụda plasma corona. Ma ihe ndị emezigharịrị na plasma na-agbanweghị agbanwe na-egosipụta ikike dị mma na ma plasma na usoro mmebi fotocatalytic.
Mmechi
Isiokwu a na-enyocha mmetụta nke usoro njikọ nkecerium oxideon urughuru morphology, ọrụ nke morphology na elu Njirimara na catalytic ọrụ, nakwa dị ka synergistic mmetụta na ngwa n'etiti.cerium oxidena dopants na ndị na-ebu. Ọ bụ ezie na a mụọla ihe ndị na-eme ka cerium oxide dabeere n'ọtụtụ ebe ma tinye ya n'ọrụ na ngalaba nke catalysis, ma nwee ọganihu dị ukwuu n'ịkwụsị nsogbu gburugburu ebe obibi dị ka ọgwụgwọ mmiri, a ka nwere ọtụtụ nsogbu bara uru, dị ka edoghị anya.cerium oxidemorphology na usoro ntinye nke cerium na-akwado ihe mkpali. Achọkwu nyocha ọzọ na usoro njikọ nke ndị na-emepụta ihe, na-eme ka mmetụta synergistic dị n'etiti ihe ndị dị na ya, na-amụ usoro catalytic nke ibu dị iche iche.
Onye ode akwụkwọ akụkọ
Shandong Ceramics 2023 Isi 2: 64-73
Ndị odee: Zhou Bin, Wang Peng, Meng Fanpeng, wdg
Oge nzipu: Nov-29-2023