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Controlled Photocatalytic Synthesis of Core–Shell SiC/Polyaniline Hybrid Nanostructures
Hybrid materials of electrically conducting polymers and inorganic semiconductors form an exciting class of functional materials. To fully exploit the potential synergies of the hybrid formation, however, sophisticated synthetic methods are required that allow for the fine-tuning of the nanoscale st...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2016
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5456665/ https://www.ncbi.nlm.nih.gov/pubmed/28773325 http://dx.doi.org/10.3390/ma9030201 |
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author | Kormányos, Attila Endrődi, Balázs Ondok, Róbert Sápi, András Janáky, Csaba |
author_facet | Kormányos, Attila Endrődi, Balázs Ondok, Róbert Sápi, András Janáky, Csaba |
author_sort | Kormányos, Attila |
collection | PubMed |
description | Hybrid materials of electrically conducting polymers and inorganic semiconductors form an exciting class of functional materials. To fully exploit the potential synergies of the hybrid formation, however, sophisticated synthetic methods are required that allow for the fine-tuning of the nanoscale structure of the organic/inorganic interface. Here we present the photocatalytic deposition of a conducting polymer (polyaniline) on the surface of silicon carbide (SiC) nanoparticles. The polymerization is facilitated on the SiC surface, via the oxidation of the monomer molecules by ultraviolet-visible (UV-vis) light irradiation through the photogenerated holes. The synthesized core–shell nanostructures were characterized by UV-vis, Raman, and Fourier Transformed Infrared (FT-IR) Spectroscopy, thermogravimetric analysis, transmission and scanning electron microscopy, and electrochemical methods. It was found that the composition of the hybrids can be varied by simply changing the irradiation time. In addition, we proved the crucial importance of the irradiation wavelength in forming conductive polyaniline, instead of its overoxidized, insulating counterpart. Overall, we conclude that photocatalytic deposition is a promising and versatile approach for the synthesis of conducting polymers with controlled properties on semiconductor surfaces. The presented findings may trigger further studies using photocatalysis as a synthetic strategy to obtain nanoscale hybrid architectures of different semiconductors. |
format | Online Article Text |
id | pubmed-5456665 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-54566652017-07-28 Controlled Photocatalytic Synthesis of Core–Shell SiC/Polyaniline Hybrid Nanostructures Kormányos, Attila Endrődi, Balázs Ondok, Róbert Sápi, András Janáky, Csaba Materials (Basel) Article Hybrid materials of electrically conducting polymers and inorganic semiconductors form an exciting class of functional materials. To fully exploit the potential synergies of the hybrid formation, however, sophisticated synthetic methods are required that allow for the fine-tuning of the nanoscale structure of the organic/inorganic interface. Here we present the photocatalytic deposition of a conducting polymer (polyaniline) on the surface of silicon carbide (SiC) nanoparticles. The polymerization is facilitated on the SiC surface, via the oxidation of the monomer molecules by ultraviolet-visible (UV-vis) light irradiation through the photogenerated holes. The synthesized core–shell nanostructures were characterized by UV-vis, Raman, and Fourier Transformed Infrared (FT-IR) Spectroscopy, thermogravimetric analysis, transmission and scanning electron microscopy, and electrochemical methods. It was found that the composition of the hybrids can be varied by simply changing the irradiation time. In addition, we proved the crucial importance of the irradiation wavelength in forming conductive polyaniline, instead of its overoxidized, insulating counterpart. Overall, we conclude that photocatalytic deposition is a promising and versatile approach for the synthesis of conducting polymers with controlled properties on semiconductor surfaces. The presented findings may trigger further studies using photocatalysis as a synthetic strategy to obtain nanoscale hybrid architectures of different semiconductors. MDPI 2016-03-16 /pmc/articles/PMC5456665/ /pubmed/28773325 http://dx.doi.org/10.3390/ma9030201 Text en © 2016 by the authors; Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC-BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Kormányos, Attila Endrődi, Balázs Ondok, Róbert Sápi, András Janáky, Csaba Controlled Photocatalytic Synthesis of Core–Shell SiC/Polyaniline Hybrid Nanostructures |
title | Controlled Photocatalytic Synthesis of Core–Shell SiC/Polyaniline Hybrid Nanostructures |
title_full | Controlled Photocatalytic Synthesis of Core–Shell SiC/Polyaniline Hybrid Nanostructures |
title_fullStr | Controlled Photocatalytic Synthesis of Core–Shell SiC/Polyaniline Hybrid Nanostructures |
title_full_unstemmed | Controlled Photocatalytic Synthesis of Core–Shell SiC/Polyaniline Hybrid Nanostructures |
title_short | Controlled Photocatalytic Synthesis of Core–Shell SiC/Polyaniline Hybrid Nanostructures |
title_sort | controlled photocatalytic synthesis of core–shell sic/polyaniline hybrid nanostructures |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5456665/ https://www.ncbi.nlm.nih.gov/pubmed/28773325 http://dx.doi.org/10.3390/ma9030201 |
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