1. Chii chinonzi nanoporous metal material?
Nanoporous Metals (NPM) ikirasi yezvigadzirwa zvesimbi zvine akabatana ligaments (positive curvature) uye nanoporous chiteshi (negative curvature), iyo porosity isiri pasi pe50%, uye submicron pores (Kusanganisira micropores, mesopores uye macropores ane madhayamita. ye50-1000 nm) ine mupiro wakakura kune chaiyo nzvimbo yefuro. Sezvinoratidzwa muMufananidzo 1, saizi yepore inofanira kunge iri nanometer saizi!
Kurongeka kwezvinhu zvine porous zvehukuru hwakasiyana (kubva kuruboshwe kuenda kurudyi, kuwedzera muhukuru)
Kazhinji kutaura, kuumbwa kweporous nanometals kunonyanya kuburikidza nepamusoro-pasi yemahara kemikari corrosion dealloying uye electrochemical dealloying, uye inogona zvakare kugadzirwa nepasi-kumusoro synthesis uchishandisa template nzira. Pano isu tinonyanya kutaura nezve nzira yekugadzirira yekubata kugadzirira porous simbi. Kune zvimwe zvinhu zvinonyanya kushandiswa uye kufambiswa, zvikamu zviviri/zvizhinji zvinogona kushandiswa pakutengesa zvinofanirwa kusangana nezvinotevera: 1. Kuenzana pakati pezvikamu kunofanirwa kunge kwakasiyana; 2. Chiyero chemukati chezvikamu Pane chikumbaridzo; 3. Chikamu chimwe chete chakasimba chekugadzirisa chinogona kuumbwa.
IUPAC Periodic Tafura yeElements, mabhokisi matsvuku uye ebhuruu anowanzo shandiswa dealloyed metal elements
Mukuwedzera, iyo nanopore kugoverwa kwesimbi nanoporous inogona kuva yunifomu kana isiri-uniform, hongu, zvose zviri zviviri zviripo muzviitiko zvakawanda. Zvichakadaro, iyo crystallographic kutaridzika uye kukanganisa kwekristaro kwesimbi nanoporous kunoenderana neiyo microstructure yealloy precursors uye maitiro ekugadzirisa. Nekuda kweiyo yakasarudzika microstructure, nanoporous simbi dzinogona panguva imwe chete kuratidza zvimiro zvesimbi uye nanostructured zvinhu, uye zvimiro zvadzo zvine hukama nemagetsi, magineti, optical, mechanical, catalytic uye electrocatalytic properties.
a). TEM ye np-AuAg, b) 3D yekuvaka patsva modhi
2. The microscopic maitiro e nanoporous simbi?
Muchirevo, imwe kana kupfuura yenzira nhatu dzinotevera dzinogona kunge dziri kushanda kana simbi inonyungudika zvakanyanya.
(1) Masimbi ese ari maviri anoiswa ionized, uye ipapo simbi inokosha inoiswa patsva;
(2) Chete simbi yepasi ndiyo inoiswa ionized uye inopinda mumhinduro, nepo maatomu esimbi inokudzwa akaunganidzwa nekupararira kwepamusoro;
(3) Simbi yepasi chete ndiyo inoaonisa yopinda mumushonga, uye maatomu emasimbi maviri anofamba muchikamu chakasimba nekuwanda kwehuwandu.
Nguva yekutumira: Feb-14-2022
