Funda mayelana nokuhlanganisa kanye nokuguqulwaI-Cerium oxide nanomatadium
Ukuhlanganiswa kweceria nanomatadiumihlanganisa imvula, i-coprecipitation, i-hydrothermal, i-mechanical synthesis, i-combustion synthesis, i-sol gel, i-micro lotion ne-pyrolysis, phakathi kwayo izindlela eziyinhloko zokuhlanganiswa imvula kanye ne-hydrothermal.Indlela ye-Hydrothermal ithathwa njengendlela yamahhala elula, eyonga kakhulu, futhi engezayo.Inselele enkulu yendlela ye-hydrothermal ukulawula i-nanoscale morphology, edinga ukulungiswa ngokucophelela ukulawula izici zayo.
Ukuguqulwa kweceriaingathuthukiswa ngezindlela ezimbalwa: (1) ukudopha amanye ama-ion ensimbi ngamanani aphansi noma osayizi abancane ku-ceria lattice.Le ndlela ayikwazi nje ukuthuthukisa ukusebenza kwama-oxide ensimbi ahilelekile, kodwa futhi yakha izinto ezintsha ezizinzile ezinezakhiwo ezintsha zomzimba namakhemikhali.(2) Hlakaza i-ceria noma ama-analogue ayo ane-doped ezintweni zokuthwala ezifanele, njengekhabhoni ecushiwe, i-graphene, njll.I-Cerium oxideingasebenza futhi njengesithwali sokuhlakaza izinsimbi njengegolide, iplatinamu, ne-palladium.Ukuguqulwa kwezinto ezisekelwe ku-cerium dioxide kusetshenziswa ikakhulukazi izinsimbi eziguqukayo, izinsimbi zomhlaba ze-alkali/alkali ezingandile, izinsimbi zomhlaba ezingavamile, nezinsimbi eziyigugu, ezinomsebenzi ongcono nokuzinza kokushisa.
Isicelo seI-Cerium oxidekanye nama-Catalyst Ahlanganisiwe
1, Ukusetshenziswa kwe-morphology ehlukene ye-ceria
ULaura et al.ibike ukunqunywa kwezinhlobo ezintathu zemidwebo yesigaba se-ceria morphology, ehlobene nemiphumela yokuhlushwa kwe-alkali kanye nezinga lokushisa lokwelashwa kwe-hydrothermal ekugcineni.CeO2i-nanostructure morphology.Imiphumela ibonisa ukuthi umsebenzi we-catalytic uhlobene ngokuqondile nesilinganiso se-Ce3+/Ce4+ kanye nokugxiliswa kwesikhala somoya-mpilo ongaphezulu.Wei et al.kuhlanganiswe ezintathu Pt/CeO2ama-catalyst anezinhlobo ezahlukene ze-carrier morphology (induku efana (CeO2-R), cubic (CeO2-C), kanye ne-octahedral (CeO2-O), ezifaneleke ikakhulukazi i-oxidation ye-catalytic yezinga eliphansi lokushisa le-C2H4.UBian et al.walungisa uchungechunge lweI-CeO2 nanomatadiumenomumo wenduku, i-cubic, granular, ne-octahedral morphology, futhi yathola ukuthi ama-catalysts alayishiweI-CeO2 nanoparticles(I-5Ni/NPs) ibonise umsebenzi ophezulu kakhulu we-catalytic kanye nokuzinza okungcono kune-catalysts nezinye izinhloboCeO2ukusekela.
2.Ukucekelwa phansi kwezinto ezingcolisa amanzi emanzini
I-Cerium oxideiye yaqashelwa njengesisusa esisebenzayo se-ozone oxidation ekususweni kwezinhlanganisela zezinto eziphilayo ezikhethiwe.U-Xiao et al.ithole ukuthi i-Pt nanoparticles isondelene kakhulu nayoCeO2endaweni ye-catalyst futhi ibhekane nokusebenzelana okuqinile, ngaleyo ndlela ithuthukise umsebenzi wokubola kwe-ozone futhi ikhiqize izinhlobo ze-oksijini ezisebenzayo, ezinomthelela ekufakweni kwe-toluene.U-Zhang Lanhe nabanye balungiselele i-dopedCeO2/Al2O3 ama-catalysts.I-Doped metal oxides inikeza isikhala sokusabela sokusabela phakathi kwezinhlanganisela eziphilayo ne-O3, okuholela ekusebenzeni okuphezulu kwe-catalytic.CeO2/Al2O3 kanye nokwanda kwamasayithi asebenzayo endaweni ye-catalyst
Ngakho-ke, ucwaningo oluningi luye lwabonisa lokhoi-cerium oxideama-catalyst ayinhlanganisela awakwazi nje ukuthuthukisa ukucekelwa phansi kwezinto ezingcolisa umoya ze-organic recalcitrant emkhakheni wokwelashwa kwe-ozone okunamandla kwamanzi angcolile, kodwa futhi abe nemiphumela evimbelayo ku-bromate ekhiqizwa ngesikhathi senqubo ye-ozone catalytic.Banamathemba okusebenza abanzi ekwelashweni kwamanzi e-ozone.
3, Ukucekelwa phansi kwe-Catalytic kwezinhlanganisela eziphilayo eziguquguqukayo
CeO2, njenge-earth oxide evamile engavamile, iye yacutshungulwa ku-multiphase catalysis ngenxa yomthamo wayo omkhulu wokugcina umoya-mpilo.
Wang et al.kuhlanganiswe i-Ce Mn eyinhlanganisela ye-oxide ene-morphology emise okwenduku (i-Ce/Mn molar ratio engu-3:7) kusetshenziswa indlela ye-hydrothermal.Ama-Mn ions afakwe ngaphakathiCeO2uhlaka oluzongena esikhundleni sika-Ce, ngaleyo ndlela andise ukugcwala kwezikhala ze-oxygen.Njengoba i-Ce4 + ithathelwa indawo yi-Mn ions, kwakhiwa izikhala eziningi ze-oxygen, okuyisizathu somsebenzi wayo ophezulu.Du et al.kuhlanganiswe ama-catalysts e-Mn Ce oxide kusetshenziswa indlela entsha ehlanganisa imvula ye-redox nezindlela ze-hydrothermal.Bathola ukuthi isilinganiso semanganese kanyei-ceriumidlale indima ebalulekile ekwakhekeni kwe-catalyst futhi yaba nomthelela omkhulu ekusebenzeni kwayo kanye nomsebenzi wayo wokuvuselela amandla.I-Ceriumku-manganesei-cerium oxideidlala indima ebalulekile ekufakweni kwe-toluene, futhi i-manganese ikhonjiswe ukuthi idlala indima ebalulekile ekufakweni kwe-toluene.Ukuxhumana phakathi kwe-manganese ne-cerium kuthuthukisa inqubo yokusabela kwe-catalytic.
4.Photocatalyst
Ilanga et al.ilungiswe ngempumelelo i-Ce Pr Fe-0 @ C kusetshenziswa indlela ye-co.Indlela eqondile ukuthi inani le-doping lika-Pr, Fe, no-C lidlala indima ebalulekile emsebenzini we-photocatalytic.Sethula inani elifanele le-Pr, Fe, kanye no-C kuCeO2ingathuthukisa kakhulu ukusebenza kahle kwe-photocatalytic yesampula etholiwe, ngenxa yokuthi ine-adsorption engcono yezinto ezingcolisayo, ukumuncwa okuphumelelayo kakhudlwana kokukhanya okubonakalayo, izinga eliphezulu lokwakheka kwamabhendi ekhabhoni, kanye nezikhala ze-oxygen eyengeziwe.Umsebenzi othuthukisiwe we-photocatalytic weCeO2-GO nanocomposites elungiswe Ganesan et al.kubalulwe endaweni engaphezulu ethuthukisiwe, ukushuba kokumunca, ibhande elincane, kanye nemiphumela yokusabela kwesithombe.Liu et al.ithole ukuthi i-Ce/CoWO4 eyinhlanganisela ye-catalyst iyi-photocatalyst esebenza kahle kakhulu enevelu yohlelo lokusebenza engaba khona.Petrovic et al.ilungisiweCeO2ama-catalysts asebenzisa indlela yamanje yokubeka i-electrodeposition futhi aziguqule ngomfutho womoya ongashisi oshisayo ophehla i-corona plasma.Zombili izinto eziguquliwe ze-plasma nezingashintshiwe zibonisa ikhono elihle le-catalytic kuzo zombili izinqubo zokuwohloka kwe-plasma ne-photocatalytic.
Isiphetho
Lesi sihloko sibuyekeza umthelela wezindlela zokuhlanganisa zei-cerium oxideku-particle morphology, indima ye-morphology ezindaweni ezingaphezulu kanye nomsebenzi we-catalytic, kanye nomphumela we-synergistic kanye nokusebenza phakathii-cerium oxidekanye nama-dopants nabathwali.Nakuba ama-catalysts asekelwe ku-cerium oxide aye acwaningwa kabanzi futhi asetshenziswa emkhakheni we-catalysis, futhi enze inqubekelaphambili ebalulekile ekuxazululeni izinkinga zemvelo ezifana nokwelashwa kwamanzi, kusenezinkinga eziningi ezisebenzayo, njengokungacacile.i-cerium oxidei-morphology kanye nendlela yokulayisha yama-catalysts asekelwa yi-cerium.Ucwaningo olwengeziwe luyadingeka endleleni yokuhlanganiswa kwama-catalyst, okuthuthukisa umphumela we-synergistic phakathi kwezingxenye, nokufunda indlela yokwenza imithwalo ehlukene.
Umbhali wejenali
I-Shandong Ceramics yango-2023 Ikhishwe 2: 64-73
Ababhali: uZhou Bin, uWang Peng, uMeng Fanpeng, njll
Isikhathi sokuthumela: Nov-29-2023