Synthesis of novel mesoporous ZnO/SiO2 composites for the photodegradation of organic dyes

Research output: Contribution to journalArticle

Abstract

In this work, a novel class of mesoporous ZnO/SiO2 mixed composites was prepared from different amounts of zinc oxide nanoparticles, tetraethyl orthosilicate and a structure directing agent. An interesting transition in the morphology has been observed when increasing the nanoparticles loading. Silicon nuclear magnetic resonance and infrared spectroscopy were employed to prove the presence of Zn-O-Si bonds and energy dispersive X-ray spectroscopy revealed a good dispersion of zinc in all materials. All the materials were tested for the photodegradation of Rhodamine B with good results, the best catalysts being represented by the composites containing 10 and 20 wt% nanoparticle loading. Both catalysts display a higher turnover number than unstructured ZnO nanoparticles and commercial ZnO nanopowder.

Original languageEnglish
Pages (from-to)90-96
Number of pages7
JournalMicroporous and Mesoporous Materials
Volume184
DOIs
Publication statusPublished - 1 Jan 2014

Fingerprint

Photodegradation
Coloring Agents
Dyes
dyes
Nanoparticles
nanoparticles
rhodamine B
composite materials
Composite materials
synthesis
Zinc Oxide
catalysts
tetraethyl orthosilicate
Catalysts
magnetic resonance spectroscopy
Silicon
rhodamine
Zinc oxide
zinc oxides
Nuclear magnetic resonance spectroscopy

Keywords

  • Mesoporous materials
  • Photodegradation
  • Rhodamine B
  • Zinc oxide/silica composites

Cite this

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title = "Synthesis of novel mesoporous ZnO/SiO2 composites for the photodegradation of organic dyes",
abstract = "In this work, a novel class of mesoporous ZnO/SiO2 mixed composites was prepared from different amounts of zinc oxide nanoparticles, tetraethyl orthosilicate and a structure directing agent. An interesting transition in the morphology has been observed when increasing the nanoparticles loading. Silicon nuclear magnetic resonance and infrared spectroscopy were employed to prove the presence of Zn-O-Si bonds and energy dispersive X-ray spectroscopy revealed a good dispersion of zinc in all materials. All the materials were tested for the photodegradation of Rhodamine B with good results, the best catalysts being represented by the composites containing 10 and 20 wt{\%} nanoparticle loading. Both catalysts display a higher turnover number than unstructured ZnO nanoparticles and commercial ZnO nanopowder.",
keywords = "Mesoporous materials, Photodegradation, Rhodamine B, Zinc oxide/silica composites",
author = "Xavier Collard and {El Hajj}, Mouhammed and Su, {Bao Lian} and Carmela Aprile",
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language = "English",
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AU - Collard, Xavier

AU - El Hajj, Mouhammed

AU - Su, Bao Lian

AU - Aprile, Carmela

PY - 2014/1/1

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N2 - In this work, a novel class of mesoporous ZnO/SiO2 mixed composites was prepared from different amounts of zinc oxide nanoparticles, tetraethyl orthosilicate and a structure directing agent. An interesting transition in the morphology has been observed when increasing the nanoparticles loading. Silicon nuclear magnetic resonance and infrared spectroscopy were employed to prove the presence of Zn-O-Si bonds and energy dispersive X-ray spectroscopy revealed a good dispersion of zinc in all materials. All the materials were tested for the photodegradation of Rhodamine B with good results, the best catalysts being represented by the composites containing 10 and 20 wt% nanoparticle loading. Both catalysts display a higher turnover number than unstructured ZnO nanoparticles and commercial ZnO nanopowder.

AB - In this work, a novel class of mesoporous ZnO/SiO2 mixed composites was prepared from different amounts of zinc oxide nanoparticles, tetraethyl orthosilicate and a structure directing agent. An interesting transition in the morphology has been observed when increasing the nanoparticles loading. Silicon nuclear magnetic resonance and infrared spectroscopy were employed to prove the presence of Zn-O-Si bonds and energy dispersive X-ray spectroscopy revealed a good dispersion of zinc in all materials. All the materials were tested for the photodegradation of Rhodamine B with good results, the best catalysts being represented by the composites containing 10 and 20 wt% nanoparticle loading. Both catalysts display a higher turnover number than unstructured ZnO nanoparticles and commercial ZnO nanopowder.

KW - Mesoporous materials

KW - Photodegradation

KW - Rhodamine B

KW - Zinc oxide/silica composites

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DO - 10.1016/j.micromeso.2013.09.040

M3 - Article

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