Piny moko ma nyai ma nyai, α-iron-(III) oxyhydroxide, junwange ni etiye piny ma jucopo tiyo kudu pi dwoko piny pa carbon dioxide ni formic acid. Credit: Prof. Kazuhiko Maeda
Photoreduction pa CO2 ni piny ma jucwalo calu formic acid (HCOOH) ubedo yore maber mi lwinyu ikum rwom pa CO2 ma ube medere in yamu. Pi konyo tic eni, dul pa ju ma timo sayusac i Tokyo Institute of Technology oyero piny moko ma nwangre yot man uketho i kum alumina support pi yubu catalyst ma copo loko CO2 maber i HCOOH ma romo 90%!
Mutukari ma tiyu ku mac ubedo piny ma dhanu mapol maru, man the lembe madit utiye nia epe ku yamo ma rac. Peko madit ni dhanu mapol, kadi ango, utiye bedu migi ma rwinyo man kare malac mi charging. Kae ma pii ma tiyo ku mac calu gasoline utiye ku bero madit. Teko migi ma malu nyuthu rwom mabor man pong pa mac pio pio.
Lokruok kud i gasoline nyo diesel ni piny mange ma pii copo jwigo lyethu ma rac man egwoko bero pa pii ma pii. I fuel cell, calu labol, formic acid copo mio kero ni injin man ewodho pii man carbon dioxide. Ento, ka formic acid juyubu ku dwoko piny CO2 mi yamu ni HCOOH, ci piny ma wok kende kende utiye pii.
Medu pa rwom pa carbon dioxide i yamu man kony migi i lyethu pa ng'om dong ubedo lembe ma dhanu zo ungiyu. Calu ju ma timo sayusac gibe temo yore matung tung mi cobo peko eni, yore maber uwok—loko carbon dioxide ma ukadhu i yamu ni kemikol ma tiyo ku tego.
Yubu piny ma calu formic acid (HCOOH) ku photoreduction pa CO2 i lero pa ceng ukelo nen pa dhanu madwong kawoni eni kum tic eni utiye ku bero ario: edwoko piny CO2 ma ukadhu man ekonyo ni dwoko piny kero ma watiye kudu kawoni. nok. Calu piny maber ma tingo hydrogen ku tego ma lee, HCOOH copo mio tego nikadhu kud i wango man eweko pii kende calu piny ma wok kud i iye.
Mi ketho yore maber eni doko lemandha, ju ma gisomo lembe mi ngec gi goyo yore mi photocatalytic ma dwoko piny carbon dioxide ku kony pa lero pa ceng. Yore eni utiye ku piny ma mako ler (niwacu, photosensitizer) man catalyst ma ketho electron mapol ma mitere pi dwoko piny pa CO2 ni HCOOH. Man ecaku sayu yore maber man maber!
Fotocatalytic reduction of carbon dioxide using commonly used compound infographics.Credit: Professor Kazuhiko Maeda
Ni kum tic migi maber man copo migi mi dwoko piny manyen, catalysts ma tek nen calu piny maber uloyu pi tic eni, man pi oro madwong, copo mi catalytic pa cobalt, manganese, nickel man iron-based metal-organic frameworks (MOFs) jubedu ka ngiyo, ikindgi The latter utiye ku bero moku ikum cuma mange, ento iron-based catalysts pol pa catalys kende re ma juyubu. monoxide calu piny madit, epe HCOOH.
Ento, peko eni judaru timo nyathotho ku dul pa ju ma timo sayusac i Tokyo Institute of Technology (Tokyo Tech) ma telo wigi ku Professor Kazuhiko Maeda. I lembe ma jutimo kawoni ma juwodho i gazeti mi kemikol Angewandte Chemie, dul ne unyutho alumina (Al2O3)-supported iron-based catalyst ma tiyo ku α-iron (IIIF-oxide) OH; geothite). The novel α-FeO�OH/Al2O3 catalyst nyutho tic maber mi loko CO2 ni HCOOH man dwoko piny maber. Kinde ma jupenje ikum yero pa catalyst, Japonji Maeda uwacu: “Wamito ni sayu piny madwong ma calu catalyts in photoduction system ma wamito. ma tiyo, ma juromo tiyo kudu kendu, ma rac ungo man ma wel pare lapiny. Eno re m'uketho wayero piny ma jupoko i ngom ma tung tung calu goethite pi timo lembe mwa.
Udul ne otiyo ku yore mayot mi ketho piny ma nyayu kero migi. I ngeye gitiyo ku piny ma juyiko ku cuma ma julwongo ni Al2O3 pi dwoko piny CO2 i lyethu pa ot i bedo pa ruthenium-based (Ru) photosensitizer, electron donor, man lero ma nen ku wavelengths ma kadhu 400 nanometers.
Adwogi ne ber mandha. Yero pa yub migi pi piny madit HCOOH ubedo 80-90% ku quantum yield pa 4.3% (ma nyutho tic pa yub ne).
Somu eni nyuthu piny ma kwong ma tiyo ku cuma ma copo nyayu HCOOH ka juporo ku piny ma tiyo maber. Eweco bende ikum beru pa piny maber (Al2O3) man adwogi pare ikum dwoko piny pa ler.
Lembe ma wanwango kud i sayu lembe eni copo konyo ni yubu jam tic manyen ma ber ma epe ku cuma pi dwoko piny pa carbon dioxide ni kemikol mange ma pire tek. Somo mwa nyutho nia yo mi kelo kero ma leng epe. Kadi yore mayot mi yiko jam tic copo mio adwogi maber, man ungeyere nia piny ma dongo dongo ma nwangre i ngom, ka jukonyo ku alumina, jucopo tiyu kudu ku alumina piny ma juyero pi dwoko piny CO2,” Prof. Maeda uketho.
Lembe ma jukwanu: "Alumina-Supported Alpha-Iron (III) Oxyhydroxide as a Recyclable Solid Catalyst for CO2 Photoreduction under Visible Light" pa Daehyeon An, Dr. Shunta Nishioka, Dr. Shuhei Yasuda, Dr. Tomoki Kanazawa, Dr. Yoshinobu Kamakura, Yoshikof. Shunsuke Nozawa, Prof. Kazuhiko Maeda, 12 mi dwi mir abic 2022, Angewandte Chemie.DOI: 10.1002 / anie.202204948
"Eni kama moo ma pii calo gasoline utiye ku bero madit. Teko migi ma malu nyuthu rwom mabor man pongu moo pio pio."
Ka namba moko nen ango? Teko pa formic acid uporo ku gasoline nenedi? Ku atom acel kende mi carbon i formula pa chemical, ageno nya ecopu bedu kago ku gasoline.
Mi medo ikum meno, nguce utiye marac man, calu acid, etiye rac uloyu ma sagu gasoline. Eni epe peko mi engineering ma juromo cobo ngo, ento tek formic acid utiye ku bero madit mi medo bor man dwoko piny sawa mi pongu mac pa battery, ecopo bedu ber ungo.
Ka giparu mi kwanyu goethite kud i ngom, ecopo bedu tic mi golo piny ma tiyo ku tego ma lee man copo nyayu peko ikum kabedu.
Gicopo wacu nia goethite madwong utiye i ngom calu ma ageno nya ebi mito kero madwong mi nwangu piny ma mitire man mi timo goethite.
Etie ber ni neno kwo pa tic eni man ni kwanu wel pa kero pa piny moko ci. NASA unwangu ngo piny moko ma julwongo ni free launch. Jumange umitu giketh lembe eni i wigi.
SciTechDaily: Kabedo pa lembe maber mi ngec mi cing nicaku i 1998. Bed ku ngec manyen mi ngec mi cing nikadhu kud i email nyo kabedo mi wecu ikind dhanu.
Paru kende ikum ngec ma leng man ma nyayu anyonga pa BBQ copo ketho dhanu mapol cwer. Cwir utuc, man pi dhanu mapol...