Carbon nanosphere templates for the preparation of inverse opal titania photonic crystals by atomic layer deposition

László Péter Bakos, Dániel Karajz, András Katona, Klara Hernadi, Bence Parditka, Zoltán Erdélyi, István Lukács, Zoltán Hórvölgyi, Géza Szitási, Imre Miklós Szilágyi

Research output: Article

Abstract

Carbon nanospheres were used as templates for the first time to prepare titania inverse opal photonic crystal. From the spheres, opal colloid crystals were made by vertical deposition on microscope slides, and TiO2 was grown on them using atomic layer deposition (ALD). For this technique, the relatively high thermal stability and the presence of oxygen containing functional groups on the surface of the carbon spheres are beneficial. Subsequent annealing burned out the template spheres, leaving behind the inverse opal structures. The upper solid TiO2 layer was removed with argon ion sputtering. The samples were characterized with SEM, Raman spectroscopy, XRD, EDX, UV–Vis diffuse reflectance spectroscopy and their photocatalytic activity was investigated in decomposing organic dyes under UV and visible illumination. A new approach was used to test photocatalysis on the surface by utilizing UV–Vis reflectance and Raman spectroscopy in conjunction.

Original languageEnglish
Article number144443
JournalApplied Surface Science
DOIs
Publication statusAccepted/In press - jan. 1 2019

Fingerprint

Atomic layer deposition
Nanospheres
atomic layer epitaxy
Photonic crystals
templates
Carbon
titanium
Titanium
photonics
preparation
Raman spectroscopy
carbon
crystals
reflectance
conjunction
Photocatalysis
Argon
Colloids
chutes
Functional groups

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Physics and Astronomy(all)
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

Cite this

Carbon nanosphere templates for the preparation of inverse opal titania photonic crystals by atomic layer deposition. / Bakos, László Péter; Karajz, Dániel; Katona, András; Hernadi, Klara; Parditka, Bence; Erdélyi, Zoltán; Lukács, István; Hórvölgyi, Zoltán; Szitási, Géza; Szilágyi, Imre Miklós.

In: Applied Surface Science, 01.01.2019.

Research output: Article

Bakos, László Péter ; Karajz, Dániel ; Katona, András ; Hernadi, Klara ; Parditka, Bence ; Erdélyi, Zoltán ; Lukács, István ; Hórvölgyi, Zoltán ; Szitási, Géza ; Szilágyi, Imre Miklós. / Carbon nanosphere templates for the preparation of inverse opal titania photonic crystals by atomic layer deposition. In: Applied Surface Science. 2019.
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AU - Hernadi, Klara

AU - Parditka, Bence

AU - Erdélyi, Zoltán

AU - Lukács, István

AU - Hórvölgyi, Zoltán

AU - Szitási, Géza

AU - Szilágyi, Imre Miklós

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