Skip to main content
main-content
Top

Hint

Swipe to navigate through the articles of this issue

22-03-2019 | Issue 8/2019

Journal of Materials Science: Materials in Electronics 8/2019

CO2 gas sensor based on macro porous silicon modified with trimetallic nanoparticles

Journal:
Journal of Materials Science: Materials in Electronics > Issue 8/2019
Authors:
Alwan M. Alwan, Duaa A. Hashim, Muslim F. Jawad
Important notes

Publisher’s Note

Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Abstract

Two kinds of modified macro porous silicon (maPsi) layer with trimetallic nanoparticles surface alloying and core–shell forms CO2 gas sensors were fabricated and tested successfully. Trimetallic Au–Ag–Pd nanoparticles were prepared by an ion reduction process of different metallic salts on maPsi layer by a simple immersion process. As-formed maPsi layer was fabricated by a laser assisted etching (LAE) process with laser power density illumination, current density and etching time of about: 25 mW/cm2, 20 mA/cm2 and 20 min, respectively. Immersion process with different immersion times were carried out at a fixed concentration 1 mM of HAuCl4, AgNO3 and PdCl2 to synthesize Au–Ag–PdNPs/maPsi hybrid structures. Trimetallic core–shell nanoparticles form was prepared at (6, 8) min immersion times, while for surface alloying nanoparticles form was prepared at (2, 4) min immersion times in a mixed solution with a fixed ratio 1:1:1 at room temperature. The structural aspects of the as-formed maPsi layer and trimetallic Au–Ag–Pd nanoparticles were demonstrated by field emission-scanning electron microscopy (FE-SEM), X-ray diffraction (XRD) and energy dispersive X-ray analysis (EDS). The electrical properties of the modified maPsi layers with trimetallic nanoparticles with and without CO2 gas sensor were found at room temperature. A specific enhancement in gas sensitivity for trimetallic surface alloying nanoparticles form compared with that of the core–shell nanoparticles form was obtained due to the higher specific area to volume ratio.

Please log in to get access to this content

To get access to this content you need the following product:

Springer Professional "Wirtschaft+Technik"

Online-Abonnement

Mit Springer Professional "Wirtschaft+Technik" erhalten Sie Zugriff auf:

  • über 69.000 Bücher
  • über 500 Zeitschriften

aus folgenden Fachgebieten:

  • Automobil + Motoren
  • Bauwesen + Immobilien
  • Business IT + Informatik
  • Elektrotechnik + Elektronik
  • Energie + Umwelt
  • Finance + Banking
  • Management + Führung
  • Marketing + Vertrieb
  • Maschinenbau + Werkstoffe
  • Versicherung + Risiko

Testen Sie jetzt 30 Tage kostenlos.

Springer Professional "Technik"

Online-Abonnement

Mit Springer Professional "Wirtschaft" erhalten Sie Zugriff auf:

  • über 50.000 Bücher
  • über 380 Zeitschriften

aus folgenden Fachgebieten:

  • Automobil + Motoren
  • Bauwesen + Immobilien
  • Business IT + Informatik
  • Elektrotechnik + Elektronik
  • Energie + Umwelt
  • Maschinenbau + Werkstoffe




Testen Sie jetzt 30 Tage kostenlos.

Springer Professional "Wirtschaft"

Online-Abonnement

Mit Springer Professional "Wirtschaft" erhalten Sie Zugriff auf:

  • über 58.000 Bücher
  • über 300 Zeitschriften

aus folgenden Fachgebieten:

  • Bauwesen + Immobilien
  • Business IT + Informatik
  • Finance + Banking
  • Management + Führung
  • Marketing + Vertrieb
  • Versicherung + Risiko




Testen Sie jetzt 30 Tage kostenlos.

Literature
About this article

Other articles of this Issue 8/2019

Journal of Materials Science: Materials in Electronics 8/2019 Go to the issue