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Preparation and Application of Immobilized Surfactant-Modified PANi-CNT/TiO(2) under Visible-Light Irradiation

Hydrothermally and sol-gel-synthesized immobilized surfactant-modified polyaniline-carbon nanotubes/TiO(2) (PANi-CNT/TiO(2)) photocatalysts were prepared and their application in the degradation of diethyl phthalate (DEP) under visible light at 410 nm was investigated in this sturdy. To improve the...

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Autores principales: Yuan, Ching, Hung, Chung-Hsuang, Yuan, Chung-Shin, Li, Huei-Wen
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5578243/
https://www.ncbi.nlm.nih.gov/pubmed/28773238
http://dx.doi.org/10.3390/ma10080877
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author Yuan, Ching
Hung, Chung-Hsuang
Yuan, Chung-Shin
Li, Huei-Wen
author_facet Yuan, Ching
Hung, Chung-Hsuang
Yuan, Chung-Shin
Li, Huei-Wen
author_sort Yuan, Ching
collection PubMed
description Hydrothermally and sol-gel-synthesized immobilized surfactant-modified polyaniline-carbon nanotubes/TiO(2) (PANi-CNT/TiO(2)) photocatalysts were prepared and their application in the degradation of diethyl phthalate (DEP) under visible light at 410 nm was investigated in this sturdy. To improve the dispersion of nanoparticles and the transfer of electrons, the TiO(2) surface was modified with both sodium dodecyl sulfate (SDS) and functionalized carbon nanotubes (CNT-COOH and CNT-COCl). With the addition of PANi, which was increased from 1–5%, the adsorption edge of the prepared photocatalysts shifted to 442 nm. The SDS linked the PANi polymers to achieve a thickness of coating of the film of up to 314–400 nm and 1301–1600 nm for sol-gel hydrolysis and hydrothermally-synthesized photocatalysts, respectively. An appropriate film thickness would extend the transfer path of the electrons and inhibit the recombination of the electrons and the electron-holes. The photo-degradation performance of DEP by the hydrothermally-synthesized photocatalysts was better than those by sol-gel hydrolysis. The results revealed that the hydroxyl radicals were the key oxidant in the degradation of DEP using hydrothermally-synthesized PANi-CNT/TiO(2) photocatalysts. The morphology and functional groups of the raw materials of photocatalysts were characterized and a comparison of photocatalytic activity with other TiO(2)-based photocatalysts was also provided.
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spelling pubmed-55782432017-09-05 Preparation and Application of Immobilized Surfactant-Modified PANi-CNT/TiO(2) under Visible-Light Irradiation Yuan, Ching Hung, Chung-Hsuang Yuan, Chung-Shin Li, Huei-Wen Materials (Basel) Article Hydrothermally and sol-gel-synthesized immobilized surfactant-modified polyaniline-carbon nanotubes/TiO(2) (PANi-CNT/TiO(2)) photocatalysts were prepared and their application in the degradation of diethyl phthalate (DEP) under visible light at 410 nm was investigated in this sturdy. To improve the dispersion of nanoparticles and the transfer of electrons, the TiO(2) surface was modified with both sodium dodecyl sulfate (SDS) and functionalized carbon nanotubes (CNT-COOH and CNT-COCl). With the addition of PANi, which was increased from 1–5%, the adsorption edge of the prepared photocatalysts shifted to 442 nm. The SDS linked the PANi polymers to achieve a thickness of coating of the film of up to 314–400 nm and 1301–1600 nm for sol-gel hydrolysis and hydrothermally-synthesized photocatalysts, respectively. An appropriate film thickness would extend the transfer path of the electrons and inhibit the recombination of the electrons and the electron-holes. The photo-degradation performance of DEP by the hydrothermally-synthesized photocatalysts was better than those by sol-gel hydrolysis. The results revealed that the hydroxyl radicals were the key oxidant in the degradation of DEP using hydrothermally-synthesized PANi-CNT/TiO(2) photocatalysts. The morphology and functional groups of the raw materials of photocatalysts were characterized and a comparison of photocatalytic activity with other TiO(2)-based photocatalysts was also provided. MDPI 2017-07-29 /pmc/articles/PMC5578243/ /pubmed/28773238 http://dx.doi.org/10.3390/ma10080877 Text en © 2017 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
Yuan, Ching
Hung, Chung-Hsuang
Yuan, Chung-Shin
Li, Huei-Wen
Preparation and Application of Immobilized Surfactant-Modified PANi-CNT/TiO(2) under Visible-Light Irradiation
title Preparation and Application of Immobilized Surfactant-Modified PANi-CNT/TiO(2) under Visible-Light Irradiation
title_full Preparation and Application of Immobilized Surfactant-Modified PANi-CNT/TiO(2) under Visible-Light Irradiation
title_fullStr Preparation and Application of Immobilized Surfactant-Modified PANi-CNT/TiO(2) under Visible-Light Irradiation
title_full_unstemmed Preparation and Application of Immobilized Surfactant-Modified PANi-CNT/TiO(2) under Visible-Light Irradiation
title_short Preparation and Application of Immobilized Surfactant-Modified PANi-CNT/TiO(2) under Visible-Light Irradiation
title_sort preparation and application of immobilized surfactant-modified pani-cnt/tio(2) under visible-light irradiation
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5578243/
https://www.ncbi.nlm.nih.gov/pubmed/28773238
http://dx.doi.org/10.3390/ma10080877
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