Masana kimiyya a Cibiyar Fasaha ta Tokyo sun nuna cewa barbashi na jan karfe oxide a kan sub-nanoscale sun fi ƙarfin kuzari fiye da waɗanda ke kan nanoscale.Wadannan subnanoparticles kuma za su iya haifar da hadawan abu da iskar shaka halayen hydrocarbons kamshi da nisa fiye da yadda ya kamata fiye da catalysts a halin yanzu amfani a masana'antu.Wannan binciken yana buɗe hanya mafi inganci da ingantaccen amfani da iskar hydrocarbons, waɗanda ke da mahimmancin kayan bincike da masana'antu.

Zaɓin oxidation na hydrocarbons yana da mahimmanci a cikin halayen sinadarai da yawa da hanyoyin masana'antu, don haka, masana kimiyya sun kasance suna neman ƙarin ingantattun hanyoyin aiwatar da wannan iskar shaka.Copper oxide (CunOx) nanoparticles an samu da amfani a matsayin mai kara kuzari don sarrafa kamshi hydrocarbons, amma neman ma fi tasiri mahadi ya ci gaba.

A baya-bayan nan, masana kimiyya sun yi amfani da kayan aikin ƙarfe na ƙarfe mai daraja wanda ya ƙunshi barbashi a matakin sub-nano.A wannan matakin, barbashi suna auna ƙasa da nanometer kuma lokacin da aka sanya su akan abubuwan da suka dace, za su iya bayar da wuraren da suka fi girma fiye da nanoparticle catalysts don haɓaka reactivity.

A cikin wannan yanayin, ƙungiyar masana kimiyya ciki har da Farfesa Kimihisa Yamamoto da Dr. Makoto Tanabe daga Cibiyar Fasaha ta Tokyo (Tokyo Tech) sun binciki halayen sinadarai da CunOx subnanoparticles (SNPs) suka yi don kimanta aikinsu a cikin iskar gas na hydrocarbons.CunOx SNPs masu girma dabam uku (tare da 12, 28, da 60 atom na jan karfe) an samar dasu a cikin tsarin bishiya-kamar da ake kira dendrimers.An goyan bayan a kan wani ma'auni na zirconia, an yi amfani da su zuwa iskar oxygen na iska na kwayoyin halitta tare da zoben benzene na ƙanshi.

An yi amfani da X-ray photoelectron spectroscopy (XPS) da infrared spectroscopy (IR) don nazarin tsarin SNPs da aka haɗa, kuma sakamakon yana goyan bayan ƙididdige ka'idar aiki mai yawa (DFT).

Binciken XPS da ƙididdige DFT sun nuna ƙarar ionicity na haɗin jan ƙarfe-oxygen (Cu-O) yayin da girman SNP ya ragu.Wannan haɗin gwiwar haɗin gwiwa ya fi wanda aka gani a yawancin cu-O bonds, kuma mafi girman polarization shine sanadin ingantattun ayyukan catalytic na CunOx SNPs.

Tanabe da membobin tawagar sun lura cewa CunOx SNPs sun haɓaka oxidation na ƙungiyoyin CH3 da ke haɗe zuwa zoben aromatic, wanda hakan ya haifar da samar da kayayyaki.Lokacin da ba a yi amfani da mai kara kuzari na CunOx SNP ba, ba a samar da samfuran ba.Mai haɓakawa tare da mafi ƙarancin CunOx SNPs, Cu12Ox, yana da mafi kyawun aiki mai ƙarfi kuma ya tabbatar da zama mafi dawwama.

Kamar yadda Tanabe ya bayyana, "haɓaka haɓakar ionity na cu-O bond tare da raguwar girman CunOx SNPs yana ba da damar mafi kyawun aikin su don haɓakar iskar gas na hydrocarbon."

Binciken su yana goyan bayan hujjar cewa akwai babban yuwuwar yin amfani da jan karfe oxide SNPs azaman masu haɓakawa a aikace-aikacen masana'antu.Yamamoto ya ce, "Ayyukan haɓakawa da tsarin waɗannan nau'ikan CunOx SNPs masu sarrafa girman za su kasance mafi kyau fiye da na masu haɓaka ƙarfe masu daraja, waɗanda aka fi amfani da su a masana'antu a halin yanzu," in ji Yamamoto, yana nuna abin da CunOx SNPs zai iya cimma a nan gaba.

Kayayyakin da Cibiyar Fasaha ta Tokyo ta samar.Lura: Ana iya gyara abun ciki don salo da tsayi.

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