Ua hōʻike nā kānaka ʻepekema ma Tokyo Institute of Technology e ʻoi aku ka ikaika o nā ʻāpana keleawe keleawe ma ka sub-nanoscale ma mua o nā mea ma ka nanoscale.Hiki i kēia mau subnanoparticles ke hoʻopololei i ka hopena o ka oxidation o nā hydrocarbons aromatic i ʻoi aku ka maikaʻi ma mua o nā catalysts i hoʻohana ʻia i ka ʻoihana.Hāʻawi kēia haʻawina i ke ala e ʻoi aku ka maikaʻi a ʻoi aku ka maikaʻi o ka hoʻohana ʻana i nā hydrocarbons aromatic, he mau mea koʻikoʻi no ka noiʻi a me ka ʻoihana.

He mea koʻikoʻi ka koho ʻana o ka hydrocarbons i nā ʻano hana kemika a me nā kaʻina hana ʻoihana, a no laila, ua ʻimi nā kānaka ʻepekema i nā ala ʻoi aku ka maikaʻi o ka hoʻokō ʻana i kēia oxidation.Ua ʻike ʻia nā nanoparticles Copper oxide (CunOx) i mea pono ma ke ʻano he catalyst no ka hana ʻana i nā hydrocarbons aromatic, akā ua hoʻomau ʻia ka ʻimi ʻana i nā pūhui ʻoi aku ka maikaʻi.

I kēia mau lā i hala iho nei, ua hoʻohana nā kānaka ʻepekema i nā catalysts i hoʻokumu ʻia metala maikaʻi i loko o nā ʻāpana ma ka pae sub-nano.Ma kēia pae, ana ʻia nā ʻāpana liʻiliʻi ma mua o ka nanometer a ke kau ʻia ma luna o nā substrate kūpono, hiki iā lākou ke hāʻawi i nā wahi ʻoi aku ka kiʻekiʻe ma mua o ka nanoparticle catalysts e hāpai i ka reactivity.

Ma kēia ʻano, ua noiʻi kekahi pūʻulu ʻepekema me Prof. Kimihisa Yamamoto a me Kauka Makoto Tanabe mai Tokyo Institute of Technology (Tokyo Tech) i nā hopena kemika i hoʻopaʻa ʻia e CunOx subnanoparticles (SNPs) e loiloi i kā lākou hana i ka oxidation o nā hydrocarbons aromatic.Ua hana ʻia nā CunOx SNP o ʻekolu mau nui kikoʻī (me 12, 28, a me 60 mau ʻātoma keleawe) i loko o nā ʻano kumu lāʻau i kapa ʻia nā dendrimers.Kākoʻo ʻia ma kahi substrate zirconia, ua hoʻopili ʻia lākou i ka hoʻoheheʻe aerobic o kahi hui organik me kahi apo benzene ʻala.

X-ray photoelectron spectroscopy (XPS) a me infrared spectroscopy (IR) ua hoʻohana 'ia e kālailai i ka synthesized SNP' hale, a ua kākoʻo 'ia nā hualoaʻa e ka density functionality theory (DFT) helu.

Ua hōʻike ʻia ka helu XPS a me ka helu DFT i ka piʻi ʻana o ka ionicity o nā paʻa keleawe-oxygen (Cu-O) i ka emi ʻana o ka nui o SNP.ʻOi aku ka nui o kēia polarization paʻa ma mua o ka mea i ʻike ʻia ma ka nui o nā paʻa Cu-O, a ʻo ka polarization nui ke kumu o ka hoʻoikaika catalytic hana o nā CunOx SNPs.

Ua ʻike ʻo Tanabe a me nā lālā o ka hui ua hoʻolalelale nā ​​CunOx SNPs i ka oxidation o nā pūʻulu CH3 i hoʻopili ʻia i ke apo ʻala, a laila alakaʻi i ka hoʻokumu ʻana i nā huahana.Ke hoʻohana ʻole ʻia ka CunOx SNP catalyst, ʻaʻohe huahana i hana ʻia.ʻO ka catalyst me nā CunOx SNP liʻiliʻi loa, ʻo Cu12Ox, loaʻa ka hana catalytic maikaʻi loa a hōʻike ʻia ʻo ia ka mea lōʻihi loa.

E like me ka wehewehe ʻana o Tanabe, "ʻo ka hoʻonui ʻana i ka ionicity o nā paʻa Cu-O me ka emi ʻana o ka nui o nā CunOx SNPs e hiki ai i kā lākou hana catalytic ʻoi aku ka maikaʻi no ka hoʻonā ʻana o ka hydrocarbon aromatic."

Kākoʻo kā lākou noiʻi ʻana i ka hoʻopaʻapaʻa he nui ka mana no ka hoʻohana ʻana i ka copper oxide SNPs ma ke ʻano he catalysts i nā noi ʻoihana."ʻOi aku ka maikaʻi o ka hana catalytic a me ka mīkini o kēia mau CunOx SNP i hoʻopaʻa ʻia i ka nui ma mua o nā catalysts metala hanohano, i hoʻohana pinepine ʻia i ka ʻoihana i kēia manawa," wahi a Yamamoto, e hōʻike ana i ka mea e hiki ai i nā CunOx SNP ke hoʻokō i ka wā e hiki mai ana.

Nā mea i hāʻawi ʻia e Tokyo Institute of Technology.Nānā: Hiki ke hoʻoponopono ʻia ka ʻike no ke ʻano a me ka lōʻihi.

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