Leilung mineral zau tak, α-iron-(III) oxyhydroxide chu carbon dioxide chu formic acid-a photoreduction-na atana recyclable catalyst a nih thu hmuhchhuah a ni.Credit: Prof. Kazuhiko Maeda
CO2 chu formic acid (HCOOH) ang chi transportable fuel-a photoreduction hi boruak a CO2 level sang chho zel dona atana hmanraw tha tak a ni.He hna thawhpui tur hian Tokyo Institute of Technology-a research team chuan iron-based mineral awlsam taka hmuh theih tur an thlang a, alumina support-ah an load a, CO2 chu HCOOH-ah efficient takin a chantir thei tur catalyst an siam a, chu chu 90% vel selectivity a ni!
Electric lirthei hi mi tam tak tan chuan duhthlan tur hmuhnawm tak a ni a, a chhan ber chu carbon emission a neih loh vang a ni.Mahse, mi tam tak tan chuan a chhiatna lian tak chu range an neih loh vang leh charging hun rei tak an neih vang a ni.Hetah hian gasoline ang chi liquid fuel te hian advantage lian tak an nei a ni.An energy density sang tak hian range hla tak leh refueling rang tak a nei tihna a ni.
Gasoline emaw diesel emaw atanga liquid fuel dang a thlak chuan liquid fuel thatna chu vawng reng chungin carbon emission a ti bo thei a ni.Entirnan fuel cell-ah chuan formic acid hian engine a tichak thei a, chutih rualin tui leh carbon dioxide a paih chhuak thei bawk.Amaherawhchu, formic acid hi boruak atanga CO2 tihhniam atanga HCOOH-a tihtlem atanga siam a nih chuan net output awmchhun chu tui a ni.
Kan boruakah carbon dioxide level sang chho zel leh khawvel lumna tichhe thei tura an thawhhlawkzia chu tunah chuan thuthang tlanglawn tak a ni ta a ni.Hriselna lama zirchiangtute’n he buaina chinfel dan hrang hrang an enchhin lai hian, a chinfel dan tha tak a lo chhuak ta a ni—thil boruaka carbon dioxide tam lutuk chu energy tamna chemical-ah a chantir ta a ni.
Ni ênga CO2 photoreduction hmanga formic acid (HCOOH) ang chi fuel siam chhuah hian tun hnaiah ngaihven a hlawh hle a, a chhan chu he kalphung hian hlawkna pahnih a nei a ni: CO2 emission tam lutuk a tihtlem bakah tuna kan hmachhawn mek energy tihtlem nan a pui bawk. shortage.Energy density sang tak nei hydrogen carrier tha tak a nih angin HCOOH hian combustion hmangin energy a pe thei a, chutih rualin by-product atan tui chauh a chhuah tir thei bawk.
He solution hlawk tak hi a tak takah siam turin scientist-te chuan ni êng puihnain carbon dioxide tihtlem thei photocatalytic system an siam a.He system hi light-absorbing substrate (chu chu photosensitizer) leh CO2 HCOOH-a tihtlem nana electron transfer tam tak mamawh theihna tur catalyst a awm a ni.Tin, chutiang chuan catalysts tling leh tangkai tak tak an zawng tan ta a ni!
Compound infographics hman tlanglawn hmanga carbon dioxide photocatalytic reduction.Credit: Professor Kazuhiko Maeda
An efficiency leh recyclability theihna avang hian solid catalyst te hi he hna thawk tur hian candidate tha ber nia ngaih an ni a, kum tam tak chhung chu cobalt, manganese, nickel leh iron-based metal-organic framework (MOF) tam tak catalytic theihna chu zirchian a ni a, chung zingah chuan The latter has some advantages over other metals.However, most iron-based catalysts reported so far only produce carbon monoxide as the main product, HCOOH ni lovin.
Mahse, he harsatna hi Tokyo Institute of Technology (Tokyo Tech)-a zirchiangtu team pakhatin Professor Kazuhiko Maeda kaihhruaiin rang takin an chinfel sak ta a ni.Tun hnaia chemical journal Angewandte Chemie-a zirchianna an tihchhuahah chuan he team hian alumina (Al2O3)-supported iron-based catalyst α-iron(III) oxyhydroxide (α-FeO ​​OH geothite).The novel α-FeO ​​OH/Al2O3 catalyst hian CO2 to HCOOH conversion performance tha tak leh recyclability tha tak a lantir a ni.An catalyst thlan chungchang zawhna chhangin Professor Maeda chuan, “CO2 photoreduction system-a catalyst atan element tam zawk chhui kan duh a, solid catalyst active, recyclable, non-toxic leh inexpensive.Chuvang chuan kan experiment atan goethite ang chi leia mineral zau taka sem darh kan thlang a ni.”
He team hian an catalyst siam nan impregnation method awlsam tak an hmang a.Chumi hnuah iron-supported Al2O3 materials hmangin room temperature-ah ruthenium-based (Ru) photosensitizer, electron donor, leh visible light nanometer 400 aia sang wavelength awmnaah CO2 chu photocatalytically-in an tihtlem a ni.
A result chu a fuh hle.An system selectivity chu main product HCOOH atan 80–90% a ni a, quantum yield chu 4.3% a ni (system efficiency a tarlang).
He zirchianna hian iron-based solid catalyst hmasa ber a rawn tarlang a, chu chuan photosensitizer tha tak nena paih a nih chuan HCOOH a siam thei a ni.Support material dik tak (Al2O3) pawimawhna leh photochemical reduction reaction-a a nghawng dan te pawh a sawiho bawk.
He zirchianna atanga hriatna kan neihte hian carbon dioxide chu chemical tangkai dangtea photoreduction-na atana noble metal-free catalyst thar siamchhuahna kawngah a pui thei ang.”Kan zirchianna hian green energy economy panna kawng hi a buaithlak lo tih a tarlang a, catalyst siam dan awlsam tak pawhin result ropui tak a chhuah thei a, leia tamna compound te hi alumina ang chi compound hmanga thlawp a nih chuan CO2 tana selective catalyst atan hman theih a ni tih pawh hriat lar tak a ni tihtlem,” tiin Prof. Maeda chuan a sawi chhunzawm a ni.
Thuziak: “Alumina-Supported Alpha-Iron (III) Oxyhydroxide chu Visible Light hnuaia CO2 Photoreduction atana Recyclable Solid Catalyst atan” Daehyeon An, Dr. Shunta Nishioka, Dr. Shuhei Yasuda, Dr. Tomoki Kanazawa, Dr. Yoshinobu Kamakura, Prof .. Toshiyuki Yokoi, Prof. Shunsuke Nozawa, Prof. A rilru a hah lutuk chuan a rilru a buai em em a, a rilru a hah lutuk chuan a rilru a buai em em bawk a. DOI: 10.1002 / anie.202204948
“Chutah chuan gasoline ang chi liquid fuel te hian advantage lian tak an nei a, an energy density sang tak hian long range leh quick refueling tihna a ni.”
Number thenkhat chu engtin nge ni ang?Formic acid energy density hi gasoline nen engtin nge a tehkhin?Chemical formula-ah hian carbon atom pakhat chauh a awm a nih chuan gasoline nen pawh a hnaih ngei ang tih ka ringhlel.
Chu bakah chuan a rim hi a toxic hle a, acid a nih angin gasoline aiin a tichhe zawk bawk.Hengte hi engineering lama harsatna chinfel theih loh a ni lo a, mahse formic acid hian range tihpun leh battery fuel hun tihtlem kawngah hlawkna nasa tak a neih loh chuan a hlawk lo mai thei.
Lei aṭanga goethite lakchhuah an tum a nih chuan energy hmanga lungalhthei laihchhuah hna thawh a ni ang a, boruak tichhe thei a ni ang.
Leiah hian goethite tam tak an sawi mai thei a, a chhan chu raw material mamawh hmuh theih nan leh goethite siam chhuah nan react turin chakna tam zawk a mamawh dawn niin ka ring.
A kalphung nun chhung zawng zawng thlir a, engkim energy senso chhut chhuah a ngai a ni.NASA chuan free launch tih hi an hmu lo.Midangte chuan hei hi an ngaihtuah reng a ngai a ni.
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BBQ-a smoky leh intoxicating flavors ngaihtuah mai mai chuan mi tam zawk chu salivate tir turin a tawk.Summer is here, and for many...