Platinum vaega metals e aofia ai le platinum (Pt), rhodium (Rh), palladium (Pd), ruthenium (Ru), osmium (Os), ma iridium (Ir), lea e patino i metala taua e pei o auro (Au) ma siliva (Ag) . O lo'o i ai so'otaga atomika malosi tele, ma o lo'o i ai le malosi fa'atasi fa'atasi ma le tele o le mamafa. O le numera fa'amaopoopo atomic o metali vaega uma o le platinum e 6, lea e fuafua ai o latou tulaga fa'aletino ma vaila'au. Platinum vaega metals e maualuga le liusuavai, conductivity lelei eletise ma corrosion teteʻe, maualuga vevela malosi ma maualuga vevela fetolofi tetee, ma lelei maualuga mautu vevela. O nei uiga e avea ai i latou ma mea taua mo alamanuia faʻaonaponei ma le fausiaina o le puipuiga a le atunuʻu, faʻaaogaina lautele i vaalele, aerospace, rockets, atomic energy, microelectronics technology, chemical, glass, gas purification ma metallurgical alamanuia, ma o latou matafaioi i alamanuia maualuga-tech ua faateleina. O le mea lea, ua lauiloa o le "vitamini" ma le "mea fou fou" o pisinisi faʻaonapo nei.
I tausaga talu ai nei, o metals vaega o le platinum ua faʻateleina le faʻaaogaina i pisinisi e pei o le taʻavale ma le uila afi faʻamamaina, suauʻu suauu, eletise ma eletise, mea nifo ma teuteuga. I le luʻitau 21st seneturi, o le atinaʻeina o mea uʻamea vaega o le platinum e faʻasaʻo saʻo ai le saoasaoa o le atinaʻeina o nei fanua maualuga-tech, ma e aʻafia ai foi se tulaga faʻavaomalo i le tamaoaiga o le lalolagi.
Mo se faʻataʻitaʻiga, o le suʻesuʻega i le electrocatalytic oxidation amio o tamaʻi molelaʻau olaola e pei ole methanol, formaldehyde, ma formic acid, lea e mafai ona faʻaaogaina e fai ma suauʻu suauʻu e nano platinum catalysts o loʻo i ai uma le taua o suʻesuʻega faʻavae autu ma faʻamoemoega lautele. O suʻesuʻega ua faʻaalia ai o faʻamaʻi autu e iai ni gaioiga faʻamaʻi faʻamaʻi electrocatalytic mo mole molelaʻau laiti o le tele lava o metals mamalu vaega o le platinum.
Hongwu Nano e faʻapitoa i le gaosiga o mea uʻamea taua nano i luga o le 15 tausaga, e aofia ai ae le gata i le nano platinum, iridium, ruthenium, rhodium, siliva, palladium, auro. E masani lava ona tuʻuina atu i totonu o le paʻu, e mafai foi ona faʻapipiʻiina le faʻasalalau, ma e mafai ona fetuunai le lapopoa e tusa ai ma manaoga faʻapitoa.
Platinum nanoparticles, 5nm, 10nm, 20nm, …
Platinum carbon Pt/C, Pt 10%, 20%, 50%, 75%…
Taimi meli: Iuni-14-2023