The effect of surface charge on photocatalytic degradation of methylene blue dye using chargeable titania nanoparticles

Abstract Herein, a simple approach based on tailoring the surface charge of nanoparticles, NPs, during the preparation to boost the electrostatic attraction between NPs and the organic pollutant was investigated. In this study, chargeable titania nanoparticles (TiΟ2 NPs) were synthesized via a hydro...

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Autores principales:	Fadhel Azeez, Entesar Al-Hetlani, Mona Arafa, Yasser Abdelmonem, Ahmed Abdel Nazeer, Mohamed O. Amin, Metwally Madkour
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2018
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/b174e6136af84358a6b4732c357885b6
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spelling	oai:doaj.org-article:b174e6136af84358a6b4732c357885b62021-12-02T12:31:56ZThe effect of surface charge on photocatalytic degradation of methylene blue dye using chargeable titania nanoparticles10.1038/s41598-018-25673-52045-2322https://doaj.org/article/b174e6136af84358a6b4732c357885b62018-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-018-25673-5https://doaj.org/toc/2045-2322Abstract Herein, a simple approach based on tailoring the surface charge of nanoparticles, NPs, during the preparation to boost the electrostatic attraction between NPs and the organic pollutant was investigated. In this study, chargeable titania nanoparticles (TiΟ2 NPs) were synthesized via a hydrothermal route under different pH conditions (pH = 1.6, 7.0 and 10). The prepared TiΟ2 NPs were fully characterized via various techniques including; transmission electron microscopy (TEM), X-ray diffraction (XRD), N2 adsorption/desorption, X-ray photoelectron spectroscopy (XPS), Ultraviolet–visible spectroscopy (UV-Vis) and dynamic light scattering (DLS). The influence of the preparation pH on the particle size, surface area and band gap was investigated and showed pH-dependent behavior. The results revealed that upon increasing the pH value, the particle size decreases and lead to larger surface area with less particles agglomeration. Additionally, the effect of pH on the surface charge was monitored by XPS to determine the amount of hydroxyl groups on the TiO2 NPs surface. Furthermore, the photocatalytic activity of the prepared TiΟ2 NPs towards methylene blue (MB) photodegradation was manifested. The variation in the preparation pH affected the point of zero charge (pHPZC) of TiO2 NPs, subsequently, different photocatalytic activities based on electrostatic interactions were observed. The optimum efficiency obtained was 97% at a degradation rate of 0.018 min−1 using TiO2 NPs prepared at pH 10.Fadhel AzeezEntesar Al-HetlaniMona ArafaYasser AbdelmonemAhmed Abdel NazeerMohamed O. AminMetwally MadkourNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 8, Iss 1, Pp 1-9 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Fadhel Azeez Entesar Al-Hetlani Mona Arafa Yasser Abdelmonem Ahmed Abdel Nazeer Mohamed O. Amin Metwally Madkour The effect of surface charge on photocatalytic degradation of methylene blue dye using chargeable titania nanoparticles
description	Abstract Herein, a simple approach based on tailoring the surface charge of nanoparticles, NPs, during the preparation to boost the electrostatic attraction between NPs and the organic pollutant was investigated. In this study, chargeable titania nanoparticles (TiΟ2 NPs) were synthesized via a hydrothermal route under different pH conditions (pH = 1.6, 7.0 and 10). The prepared TiΟ2 NPs were fully characterized via various techniques including; transmission electron microscopy (TEM), X-ray diffraction (XRD), N2 adsorption/desorption, X-ray photoelectron spectroscopy (XPS), Ultraviolet–visible spectroscopy (UV-Vis) and dynamic light scattering (DLS). The influence of the preparation pH on the particle size, surface area and band gap was investigated and showed pH-dependent behavior. The results revealed that upon increasing the pH value, the particle size decreases and lead to larger surface area with less particles agglomeration. Additionally, the effect of pH on the surface charge was monitored by XPS to determine the amount of hydroxyl groups on the TiO2 NPs surface. Furthermore, the photocatalytic activity of the prepared TiΟ2 NPs towards methylene blue (MB) photodegradation was manifested. The variation in the preparation pH affected the point of zero charge (pHPZC) of TiO2 NPs, subsequently, different photocatalytic activities based on electrostatic interactions were observed. The optimum efficiency obtained was 97% at a degradation rate of 0.018 min−1 using TiO2 NPs prepared at pH 10.
format	article
author	Fadhel Azeez Entesar Al-Hetlani Mona Arafa Yasser Abdelmonem Ahmed Abdel Nazeer Mohamed O. Amin Metwally Madkour
author_facet	Fadhel Azeez Entesar Al-Hetlani Mona Arafa Yasser Abdelmonem Ahmed Abdel Nazeer Mohamed O. Amin Metwally Madkour
author_sort	Fadhel Azeez
title	The effect of surface charge on photocatalytic degradation of methylene blue dye using chargeable titania nanoparticles
title_short	The effect of surface charge on photocatalytic degradation of methylene blue dye using chargeable titania nanoparticles
title_full	The effect of surface charge on photocatalytic degradation of methylene blue dye using chargeable titania nanoparticles
title_fullStr	The effect of surface charge on photocatalytic degradation of methylene blue dye using chargeable titania nanoparticles
title_full_unstemmed	The effect of surface charge on photocatalytic degradation of methylene blue dye using chargeable titania nanoparticles
title_sort	effect of surface charge on photocatalytic degradation of methylene blue dye using chargeable titania nanoparticles
publisher	Nature Portfolio
publishDate	2018
url	https://doaj.org/article/b174e6136af84358a6b4732c357885b6
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The effect of surface charge on photocatalytic degradation of methylene blue dye using chargeable titania nanoparticles

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