Uphononongo kwi-synthesis kunye nokuguqulwaI-Cerium oxide nanomaterials
Udibaniso lwei-ceria nanomatadiumibandakanya imvula, i-coprecipitation, i-hydrothermal, i-mechanical synthesis, i-combustion synthesis, i-sol gel, i-micro lotion kunye ne-pyrolysis, phakathi kwazo iindlela eziphambili ze-synthesis yimvula kunye ne-hydrothermal. Indlela yeHydrothermal ithathwa njengeyona ndlela ilula, eyona qoqosho, kunye neyongezelelweyo yasimahla. Umngeni oyintloko wendlela ye-hydrothermal kukulawula i-nanoscale morphology, efuna ukulungiswa ngokucophelela ukulawula iimpawu zayo.
Ukuguqulwa kweceriainokuphuculwa ngeendlela ezininzi: (1) ukudopa ezinye iiyoni zetsimbi ngamaxabiso aphantsi okanye ubungakanani obuncinci kwileti yeceria. Le ndlela ayinakuphucula kuphela ukusebenza kwee-oxide zetsimbi ezibandakanyekayo, kodwa kwakhona zenze izinto ezintsha ezizinzile kunye neempawu ezintsha zomzimba kunye neekhemikhali. (2) Ukusasaza i-ceria okanye i-analogues yayo edibeneyo kwizinto ezifanelekileyo zokuthwala, ezifana nekhabhoni esebenzayo, igraphene, njl.I-Cerium oxideinokuphinda isebenze njengesixhobo sokusasaza iintsimbi ezinjengegolide, iplatinam, kunye nepalladium. Ukuguqulwa kwezinto ezisekelwe kwi-cerium dioxide ikakhulu kusetyenziswa iintsimbi eziguqukayo, iintsimbi ezinqabileyo zealkali/alkali zomhlaba, iintsimbi ezinqabileyo zomhlaba, kunye neentsimbi ezixabisekileyo, ezinomsebenzi ongcono kunye nokuzinza kwe-thermal.
Ukusetyenziswa kweI-Cerium oxidekunye ne-Composite Catalysts
1, Ukusetyenziswa kweemorphologies ezahlukeneyo ze-ceria
ULaura et al. ingxelo ngokumiselwa kweentlobo ezintathu zesigaba se-ceria morphology diagrams, ezinxibelelanisa iziphumo zokuxinana kwealkali kunye nobushushu bonyango lwe-hydrothermal ukuya ekugqibeleni.CeO2i-nanostructure morphology. Iziphumo zibonisa ukuba umsebenzi we-catalytic unxulumene ngokuthe ngqo nomlinganiselo we-Ce3+/Ce4+ kunye noxinzelelo lwesithuba se-oxygen emphezulu. Wei et al. iPt ezintathu ezidityanisiweyo/CeO2I-catalysts ene-morphology ye-carriers eyahlukeneyo (intonga efana ne-CeO2-R), cubic (CeO2-C), kunye ne-octahedral (CeO2-O), ezifanelekileyo ngokukodwa kwi-low-temperature catalytic oxidation yeC2H4. UBian et al. ulungiselele uthotho lweCeO2 nanomatadiumenemilo yentonga, cubic, granular, kunye ne-octahedral morphology, kwaye yafumanisa ukuba izinto ezincedisayo zilayishiweCeO2 nanoparticles(I-5Ni/NPs) ibonise umsebenzi ophezulu kakhulu wokuvuselela kunye nozinzo olungcono kunezinye iifom ze-catalysts kunye nezinye iindlelaCeO2inkxaso.
2.I-Catalytic degradation yezinto ezingcolisa amanzi
I-Cerium oxideiye yaqatshelwa njenge-ozone oxidation catalyst esebenzayo yokususwa kwezinto ezikhethiweyo zezinto eziphilayo. Xiao et al. yafumanisa ukuba i-Pt nanoparticles inxibelelana ngokusondeleyoCeO2kwi-catalyst surface kwaye ungene kwintsebenziswano enamandla, ngaloo ndlela kuphuculwe umsebenzi wokubola kwe-ozone kunye nokuvelisa iintlobo ze-oksijini ezisebenzayo, ezinegalelo kwi-oxidation ye-toluene. UZhang Lanhe kunye nabanye balungiselela i-dopedCeO2/Al2O3 catalysts. Iioksidi zesinyithi ezifakwe emanzini zibonelela ngesithuba sokusabela phakathi kweekhompawundi zezinto eziphilayo kunye ne-O3, okukhokelela ekusebenzeni okuphezulu kwe-catalytic.CeO2/ Al2O3 kunye nokwanda kweendawo ezisebenzayo kwindawo ye-catalyst
Ngoko ke, izifundo ezininzi ziye zabonisa ukubai-cerium oxideiicatalysts eziyintlanganisela azinakwandisa kuphela ukuthotywa kwezinto ezingcolisa i-recalcitrant organic micro pollutants kwintsimi yecatalytic ozone unyango lwamanzi amdaka, kodwa zineziphumo ezithintelayo kwibromate eveliswe ngexesha lenkqubo ye-ozone catalytic. Banemibono ebanzi yokusetyenziswa kunyango lwamanzi e-ozone.
I-3, ukuthotywa kweCatalytic yeekhompawundi eziguquguqukayo zezinto eziphilayo
CeO2, njenge-oxide yomhlaba enqabileyo eqhelekileyo, ifundwe kwi-multiphase catalysis ngenxa yomthamo wayo ophezulu wokugcina i-oxygen.
Wang et al. i-synthesized a Ce Mn composite oxide kunye ne-morphology enentonga (i-Ce / Mn molar ratio ye-3: 7) usebenzisa indlela ye-hydrothermal. IiMn ion zafakwa kwiCeO2isakhelo sokuthatha indawo ye-Ce, ngokwenjenjalo sandise ukuxinana kwezithuba zeoksijini. Njengoko i-Ce4 + ithathelwa indawo yi-Mn ion, izithuba ezininzi ze-oksijini zenziwe, esi sizathu somsebenzi wayo ophezulu. Du et al. i-Mn Ce oxide catalysts eyenziweyo isebenzisa indlela entsha yokudibanisa imvula ye-redox kunye neendlela ze-hydrothermal. Bafumanisa ukuba umlinganiselo wemanganese kunyei-ceriumidlale indima ebalulekileyo ekuyilweni kwe-catalyst kwaye ichaphazele ngokubonakalayo ukusebenza kwayo kunye nomsebenzi wokuvuselela.Ceriumkwimanganesei-cerium oxideidlala indima ebalulekileyo ekufakweni kwe-toluene, kwaye imanganese ibonakaliswe ukuba idlala indima ebalulekileyo kwi-oxidation ye-toluene. Ulungelelwaniso phakathi kwe-manganese kunye ne-cerium luphucula inkqubo ye-catalytic reaction.
4.Photocatalyst
Sun et al. ilungiswe ngempumelelo i-Ce Pr Fe-0 @ C isebenzisa indlela ye-co yemvula. Indlela ekhethekileyo kukuba inani le-doping ye-Pr, Fe, kunye ne-C idlala indima ebalulekileyo kumsebenzi we-photocatalytic. Ukwazisa isixa esifanelekileyo sePr, Fe, kunye noC kwiCeO2inokuphucula kakhulu ukusebenza kakuhle kwe-photocatalytic yesampulu efunyenweyo, kuba ine-adsorption engcono yezinto ezingcolisayo, ukufunxa okusebenzayo ngakumbi kokukhanya okubonakalayo, izinga eliphezulu lokwakheka kweebhanti zekhabhoni, kunye nezithuba ezininzi zeoksijini. Umsebenzi ophuculweyo wefotocatalytic weCeO2-GO nanocomposites elungiswe nguGanesan et al. kubalelwa kummandla ophuculweyo womphezulu, ukuqina kokufunxa, ibhendi emxinwa, kunye neziphumo zokuphendula kwefoto yomphezulu. ULiu et al. ifumanise ukuba i-Ce/CoWO4 i-catalyst edibeneyo yi-photocatalyst esebenza kakhulu enexabiso lesicelo. Petrovic et al. ilungisiweCeO2ii-catalysts zisebenzisa indlela ye-electrodeposition eqhubekayo yangoku kwaye ihlengahlengiswe ngoxinzelelo lwe-atmospheric olungelulo olushushu lwe-corona plasma. Zombini iplasma eguquliweyo kunye nezixhobo ezingaguquguqukiyo zibonisa isakhono esihle sokwenza i-plasma kunye nenkqubo yokuthotywa kwefotocatalytic.
Ukuqukumbela
Eli nqaku liphonononga impembelelo yeendlela zokudibanisai-cerium oxidekwi-particle morphology, indima ye-morphology kwiipropati zomphezulu kunye nomsebenzi we-catalytic, kunye nefuthe le-synergistic kunye nokusetyenziswa phakathii-cerium oxidekunye nee-dopants kunye nabathwali. Nangona i-cerium oxide esekelwe kwi-catalysts ifundwe ngokubanzi kwaye isetyenziswe kwintsimi ye-catalysis, kwaye yenza inkqubela phambili enkulu ekusombululeni iingxaki zendalo ezifana nokunyangwa kwamanzi, kusekho iingxaki ezininzi eziphathekayo, ezifana nokungacaci.i-cerium oxidei-morphology kunye nendlela yokulayisha yee-catalysts ezixhaswayo ze-cerium. Uphando olongezelelweyo luyafuneka kwindlela yokudibanisa ye-catalysts, ukuphucula umphumo we-synergistic phakathi kwamacandelo, kunye nokufunda indlela yokwenza imithwalo eyahlukeneyo.
Umbhali wejenali
Shandong Ceramics 2023 Umba 2: 64-73
Ababhali: uZhou Bin, uWang Peng, uMeng Fanpeng, njl
Ixesha lokuposa: Nov-29-2023