1. O le a le mea uamea nanoporous?
Nanoporous Metals (NPM) o se vasega o mea uʻamea faʻatasi ai ma ligaments fesoʻotaʻi (curvature lelei) ma nanoporous channels (curvature le lelei), o le porosity e le itiiti ifo i le 50%, ma le submicron pores ( E aofia ai micropores, mesopores ma macropores ma diameters. o le 50-1000 nm) o loʻo i ai se sao taua i le vaega faʻapitoa o le foam. E pei ona faʻaalia i le Ata 1, o le tele o le pore e tatau ona tutusa le nanometer!
Fa'avasegaga o mea porous o lapopo'a eseese (mai le agavale i le taumatau, fa'ateleina le tele)
I le tulaga lautele, o le fa'aogaina o nanometals porous e masani lava e ala i luga-lalo free chemical corrosion dealloying ma electrochemical dealloying, ma e mafai foi ona saunia e ala i lalo-i luga synthesis e faʻaaoga metotia faʻataʻitaʻiga. O iinei e masani ona tatou talanoa e uiga i le auala sauniuni o le dealloying e saunia metals porous. Mo nisi elemene e masani ona faʻaaogaina ma fefaʻasoaaʻi, o vaega e lua / vaega e tele e mafai ona faʻaaogaina mo le fefaʻatauaʻiga e tatau ona fetaui ma mea nei: 1. O le tulaga paleni i le va o vaega e tatau ona matua ese; 2. Le fua fa'atatau o mea o lo'o iai E iai le fa'ailoga; 3. E mafai ona fausia se vaega vaifofo se tasi.
IUPAC Periodic Table of Elements, pusa mumu ma lanumoana e masani ona faʻaaogaina elemene uʻamea
E le gata i lea, o le tufatufaina atu o nanopore o metals nanoporous e mafai ona toniga pe leai foi, ioe, o loʻo i ai uma i le tele o tulaga. I le taimi nei, o le faʻataʻitaʻiga tioata ma faʻaletonu tioata o metals nanoporous e faʻalagolago i le microstructure o mea faʻapipiʻi uʻamea ma le faagasologa o fefaʻatauaiga. Ona o le microstructure tulaga ese, nanoporous metals e mafai ona faʻaalia i le taimi lava e tasi ia meatotino o metala ma mea faʻapipiʻi, ma o latou fausaga e fesoʻotaʻi vavalalata ma le eletise, mageta, opitika, masini, catalytic ma electrocatalytic meatotino.
a). TEM o np-AuAg, b) Fa'ata'ita'iga toe fausia 3D
2. O uiga microscopic o metals nanoporous?
I le talitonuga, o se tasi pe sili atu o auala nei e tolu e mafai ona galue pe a faʻafefeteina se uamea.
(1) O u'amea uma e lua e fa'aioni, ona toe fa'aputuina lea o le uamea taua;
(2) Na'o le u'amea faavae e fa'a'ona ma ulu i totonu o le vaifofo, a'o fa'auma o le u'amea mamalu o lo'o fa'apotopotoina e ala i le fa'asalalauina o luga;
(3) E na'o le u'amea faavae e fa'a'ona ma ulu atu i le vaifofo, ma fa'agaoioi i totonu o le vaega maumea e lua i le fa'asalalauga tele.
Taimi meli: Feb-14-2022
