1. Gịnị bụ a nanoporous metal ihe?
Nanoporous metals (NPM) bụ otu klas nke ihe igwe nwere njikọ jikọrọ ọnụ (nke ọma curvature) na ọwa nanoporous (na-adịghị mma curvature), nke porosity nke na-erughị 50%, na submicron pores (Gụnyere micropores, mesopores na macropores na dayameta. nke 50-1000 nm) nwere nnukwu onyinye na mpaghara elu nke ụfụfụ ahụ. Dịka egosiri na eserese 1, nha pore ga-abụrịrị nha nanometer!
Nkewa nke ihe porous nke nha dị iche iche (site n'aka ekpe gaa n'aka nri, na-abawanye nha)
N'ikwu okwu n'ozuzu, njikọ nke nanometals porous bụ tumadi site na n'elu-ala free chemical corrosion dealloying na electrochemical dealloy, na nwekwara ike kwadebere site ala-elu synthesis iji template usoro. Ebe a, anyị tumadi okwu banyere nkwadebe usoro dealloying iji kwadebe porous ọla. Maka ụfọdụ ihe ndị a na-ejikarị eme ihe ma na-arụ ọrụ, akụkụ abụọ / ọtụtụ ihe nwere ike iji mee ihe maka ịzụ ahịa ga-ezute isi ihe ndị a: 1. Ike nha n'etiti ihe ndị ahụ ga-adị nnọọ iche; 2. The ọdịnaya ruru nke components E nwere ọnụ ụzọ; 3. Enwere ike ịmepụta otu usoro ngwọta siri ike.
IUPAC Tebụl nke ihe, igbe na-acha uhie uhie na na-acha anụnụ anụnụ ka a na-ejikarị ihe ọla arụrụ arụ ọrụ
Tụkwasị na nke ahụ, nkesa nanopore nke ọla nanaporous nwere ike ịbụ otu ma ọ bụ na-abụghị nke uwe, n'ezie, ha abụọ dị n'ọtụtụ ọnọdụ. Ka ọ dị ugbu a, ntụgharị kristal na ntụpọ kristal nke ọla nanoporous na-adabere na microstructure nke ihe mmalite alloy na usoro nke ịzụ ahịa. N'ihi microstructure pụrụ iche, ọla nanoporous nwere ike n'otu oge na-egosipụta njirimara nke ọla na ihe nanostructured, na ihe owuwu ha nwere njikọ chiri anya na eletriki, magnetik, ngwa anya, igwe, catalytic na electrocatalytic Njirimara.
a). TEM nke np-AuAg, b) Ihe nrụgharị 3D
2. The microscopic e ji mara nke nanoporous ọla?
Na tiori, otu ma ọ bụ karịa n'ime usoro atọ ndị a nwere ike ịdị na-arụ ọrụ mgbe igwe gbazere nke ọma.
(1) A na-eme ka ọla abụọ ahụ ionized, ma mgbe ahụ, a na-atụgharị ígwè ahụ dị oké ọnụ ahịa;
(2) Naanị ihe mgbakwasị ụkwụ bụ ionized wee banye na ngwọta, ebe atom nke metal dị mma na-agbakọta site na mgbasa ozi elu;
(3) Naanị isi metal ionizes na-abanye na ngwọta, na atom nke ọla abụọ na-agagharị na usoro siri ike site na mgbasa ozi buru ibu.
Oge nzipu: Feb-14-2022
