1. Application of intense pulsed light in the development of metal and carbon materials
- Author
-
Džanko, Domagoj and Kassal, Petar
- Subjects
intenzivna pulsirajuća svjetlost ,carbon nanoparticles ,graphene ,graphene oxide ,grafenov oksid ,metalne nanočestice ,ugljikove nanočestice ,grafen ,PRIRODNE ZNANOSTI. Kemija ,metal nanoparticles ,NATURAL SCIENCES. Chemistry ,intense pulsed light - Abstract
Uobičajena metoda korištena za post-sintetsku obradu nanomaterijala, žarenje, nije povoljna za obradu nanomaterijala zbog dugog trajanja procesa i velike količine utrošene energije. Stoga je bilo potrebno razviti bržu i efikasniju metodu pri kojoj neće doći do oštećenja plastičnih podloga prilikom obrade nanomaterijala. U ovom radu opisan je utjecaj intenzivne pulsirajuće svjetlosti u razvoju metalnih i ugljikovih materijala. Tehnologijom intenzivne pulsirajuće svjetlosti (Intense pulsed light, IPL) sinterirani su bakrovi i srebrovi materijali (nanočestice, nanožice, soli) i ugljikovi materijali (nanocijevi i grafen oksid) te su promatrani utjecaji IPL zračenja na morfološka i električna svojstva navedenih materijala. Srebrove i bakrove nanočestice pod utjecajem IPL-a aglomeriraju i stvaraju vodljive puteve dok IPL nanožičane vodiče čvrsto zavari za podlogu u točki kontakta. IPL obradom ugljikovih nanocjevčica povećava se vodljivost, a obradom grafenovog oksida, uz njegovu redukciju u reducirani grafen oksid (rGO) i povećanje vodljivosti, dobivene su kvalitetne anode za litij-ionske baterije i promotori paljenja plina u gorivima. IPL-om obrađeni nanomaterijali pokazali su poboljšanja u električnoj vodljivosti i stabilnosti, dok su se površinski otpor i električne otpornosti smanjile. Metoda IPL sinteriranja pokazala se kao budućnost obrade ugljikovih i metalnih nanomaterijala zbog svoje visoke iskoristivosti, jednostavnosti i kratkog vremena trajanja. The usual method used for post-synthetic processing of nanomaterials, annealing, is not favorable for processing nanomaterials due to the long duration of the process and the large amount of energy consumed. Therefore, it was necessary to develop a faster and more efficient method that will not damage plastic substrates during the processing of nanomaterials. This work describes the influence of intense pulsed light (IPL) in the development of metal and carbon based materials. Copper and silver materials (nanoparticles, nanowires, salts) and carbon materials (nanotubes and graphene oxide) were sintered with IPL technology and the effects of IPL radiation on these materials were observed. Silver and copper nanoparticles under the influence of IPL agglomerate and create conductive pathways while the nanowire conductors are firmly welded to the substrate at the point of contact. IPL treatment of carbon nanotubes increases their conductivity, and processing of graphene oxide, with its reduction to rGO and increase in conductivity, quality anodes were obtained for Lithium-ion batteries and gas ignition promoters in fuels. IPL-treated nanomaterials showed improvement in electrical conductivity and stability, while surface resistance and electrical resistivity decreased. The IPL sintering method has proven to be the future of carbon and metal nanomaterial processing due to its high efficiency, simplicity and short processing duration.
- Published
- 2021