E aʻo i ka synthesis a me ka hoʻololiNā mea nano cerium oxide
ʻO ka hui ʻana onā mea nano ceriae komo pū me ka ua, coprecipitation, hydrothermal, mechanical synthesis, combustion synthesis, sol gel, micro lotion a me ka pyrolysis, ma waena o nā ʻano hana synthesis nui ka ua a me ka hydrothermal.Manaʻo ʻia ke ʻano hydrothermal ʻo ke ʻano maʻalahi loa, ʻoi aku ka maikaʻi, a me ka hoʻohui manuahi.ʻO ka luʻi nui o ke ʻano hydrothermal ka mālama ʻana i ka morphology nanoscale, kahi e pono ai ka hoʻoponopono pono ʻana e kāohi i kāna mau hiʻohiʻona.
ʻO ka hoʻololi ʻana oceriaHiki ke hoʻonui ʻia ma o kekahi mau ʻano: (1) doping i nā iona metala ʻē aʻe me nā kumu kūʻai haʻahaʻa a i ʻole nā liʻiliʻi liʻiliʻi ma ka lattice ceria.ʻAʻole hiki i kēia ʻano hana ke hoʻomaikaʻi wale i ka hana o nā oxides metala e pili ana, akā hana pū kekahi i nā mea paʻa hou me nā waiwai kino a me nā kemika hou.(2) E hoʻopuehu i ka ceria a i ʻole kona mau analogues doped ma luna o nā mea lawe kūpono, e like me ke kalapona hoʻōla, graphene, etc.Cerium oxidehiki ke lawelawe ma ke ʻano he mea lawe no ka hoʻopuehu ʻana i nā metala e like me ke gula, platinum, a me ka palladium.ʻO ka hoʻololi ʻana i nā mea i hoʻokumu ʻia i ka cerium dioxide e hoʻohana nui i nā metala hoʻololi, nā metala lepo alkali/alkali honua, nā metala honua ʻole, a me nā metala makamae, ʻoi aku ka maikaʻi o ka hana a me ke kūpaʻa wela.
Noi oCerium Oxidea me nā mea hoʻohuihui
1, ʻO ka hoʻohana ʻana i nā morphologies like ʻole o ka ceria
Laura et al.hōʻike i ka hoʻoholo ʻana o ʻekolu ʻano o ka ceria morphology phase diagram, e pili ana i nā hopena o ka neʻe ʻana o ka alkali a me ka mahana mālama hydrothermal i ka hopena hope.CeO2nanostructure morphology.Hōʻike nā hualoaʻa e pili pono ana ka hana catalytic i ka Ce3 +/Ce4 + ratio a me ka ʻili o ka oxygen vacancy concentration.Wei et al.ʻekolu Pt/CeO2nā mea hoʻoheheʻe me nā morphologies halihali like ʻole (koʻokoʻo like (CeO2-R), cubic (CeO2-C), a me ka octahedral (CeO2-O), kūpono loa ia no ka haʻahaʻa haʻahaʻa catalytic oxidation o C2H4.ʻO Bian et al.hoʻomākaukau i ka moʻo oNā mea nano CeO2me ke ʻano koʻokoʻo, cubic, granular, a me octahedral morphology, a ʻike ʻia ua hoʻouka ʻia nā catalysts maCeO2 nanoparticles(5Ni/NPs) i hōʻike i ka hana catalytic kiʻekiʻe aʻe a ʻoi aku ka maikaʻi ma mua o nā catalysts me nā ʻano ʻanoCeO2kākoʻo.
2. Catalytic degradation o pollutants i loko o ka wai
Cerium oxideua ʻike ʻia ma ke ʻano he catalyst ozone oxidation maikaʻi no ka wehe ʻana i nā pūhui organik i koho ʻia.Xiao et al.ua ʻike ʻia aia nā nanoparticles Pt i pili kokoke meCeO2ma ka ʻili o ka catalyst a hana i nā pilina ikaika, ma laila e hoʻomaikaʻi ai i ka hana decomposition ozone a hana i nā ʻano oxygen reactive hou aʻe, e kōkua ana i ka oxidation o toluene.Ua hoʻomākaukau ʻo Zhang Lanhe a me nā mea ʻē aʻe i dopedCeO2/Al2O3 mea hoʻolalelale.Hāʻawi nā ʻokikene metala doped i wahi pane no ka pane ʻana ma waena o nā pūhui organik a me O3, e hopena i ka hana catalytic kiʻekiʻe oCeO2/Al2O3 a me ka hoʻonui ʻana i nā wahi hana ma ka ʻili catalyst
No laila, nui nā haʻawina i hōʻike i kēlācerium oxideʻAʻole hiki i nā catalysts composite ke hoʻomaikaʻi wale i ka hoʻohaʻahaʻa ʻana o nā micro pollutants recalcitrant ma ke kahua o ka mālama ʻana o ka ozone catalytic o ka wai ʻino, akā loaʻa pū kekahi i nā hopena inhibitory i ka bromate i hana ʻia i ka wā o ka ozone catalytic kaʻina.Loaʻa iā lākou nā manaʻo hoʻohana ākea i ka mālama wai ozone.
3, Catalytic degradation o volatile mea hoʻohuihui
CeO2, ma ke ʻano he oxide honua laha ʻole, ua aʻo ʻia i ka multiphase catalysis ma muli o kona hiki ke mālama i ka oxygen kiʻekiʻe.
ʻO Wang et al.synthesized a Ce Mn composite oxide me ke kookoo morphology (Ce/Mn molar ratio o 3:7) me ka hoohana ana i ke ano hydrothermal.Mn ions ua doped i loko o kaCeO2e hoʻololi i ka Ce, ma laila e hoʻonui ai i ka neʻe ʻana o nā hakahaka oxygen.Ke pani ʻia nei ʻo Ce4 + e nā ion Mn, ua hoʻokumu ʻia nā hakahaka o ka oxygen, ʻo ia ke kumu o kāna hana kiʻekiʻe.ʻO Du et al.synthesized Mn Ce oxide catalysts me ka hoʻohana ʻana i kahi ala hou e hui pū ana i ka ua redox a me nā ʻano hydrothermal.Ua ʻike lākou i ka ratio o ka manganese a meceriumhe hana koʻikoʻi i ka hoʻokumu ʻana i ka catalyst a hoʻopilikia nui i kāna hana a me ka hana catalytic.Ceriumi ka manganesecerium oxideHe kuleana koʻikoʻi ia i ka adsorption o toluene, a ua hōʻike ʻia ka manganese i ke kuleana koʻikoʻi i ka oxidation o toluene.ʻO ka hui ʻana ma waena o ka manganese a me ka cerium e hoʻomaikaʻi i ke kaʻina hana catalytic.
4.Photocatalyst
ʻO Sun et al.Ua hoʻomākaukau maikaʻi ʻia ʻo Ce Pr Fe-0 @ C me ka hoʻohana ʻana i ke ʻano co precipitation.ʻO ka mīkini kikoʻī ʻo ka nui o ka doping o Pr, Fe, a me C he mea nui i ka hana photocatalytic.Hoʻokomo i ka nui kūpono o Pr, Fe, a me C i lokoCeO2hiki ke hoʻomaikaʻi nui i ka pono photocatalytic o ka laʻana i loaʻa, no ka mea, ʻoi aku ka maikaʻi o ka adsorption o nā pollutants, ʻoi aku ka maikaʻi o ka absorption o ka mālamalama ʻike ʻia, ʻoi aku ka nui o ka hoʻokumu ʻana o nā kaula kalapona, a me nā hakahaka o ka oxygen.Ka hoonui photocatalytic hana oCeO2-GO nanocomposites i hoomakaukauia e Ganesan et al.pili i ka ʻili o ka ʻili i hoʻonui ʻia, ka ikaika o ka absorption, ka bandgap haiki, a me ka hopena photoresponse.Liu et al.ʻike ʻia ʻo Ce/CoWO4 composite catalyst he photocatalyst maikaʻi loa me ka waiwai noi.Petrovic et al.hoomakaukauiaCeO2nā catalysts e hoʻohana ana i ke ʻano electrodeposition mau a hoʻololi iā lākou me ka puʻe ʻana o ka atmospheric ʻaʻole ka puʻuwai corona plasma.Hōʻike nā mea ʻelua plasma i hoʻololi ʻia a me nā mea i hoʻololi ʻole ʻia i ka mana catalytic maikaʻi i ka plasma a me nā kaʻina degradation photocatalytic.
Ka hopena
Hōʻike kēia ʻatikala i ka mana o nā ʻano synthesis ocerium oxidema ka morphology particle, ke kuleana o ka morphology ma luna o nā waiwai o ka ʻili a me ka hana catalytic, a me ka hopena synergistic a me ka noi ma waenacerium oxidea me nā dopants a me nā mea lawe.ʻOiai ua aʻo nui ʻia a hoʻohana ʻia nā catalysts cerium oxide ma ke kahua o ka catalysis, a ua holomua nui i ka hoʻoponopono ʻana i nā pilikia kūlohelohe e like me ka mālama ʻana i ka wai, aia nō nā pilikia kūpono, e like me ka maopopo ʻole.cerium oxidemorphology a me ka hoʻouka ʻana o ka cerium kākoʻo catalysts.Pono e noiʻi hou aku i ke ʻano synthesis o nā catalysts, hoʻonui i ka hopena synergistic ma waena o nā ʻāpana, a me ke aʻo ʻana i ka mīkini catalytic o nā ukana like ʻole.
Mea kākau moʻolelo
Shandong Ceramics 2023 Puka 2: 64-73
Nā mea kākau: Zhou Bin, Wang Peng, Meng Fanpeng, etc
Ka manawa hoʻouna: Nov-29-2023