Sustainable fabrication of silver-titania nanocomposites using goji berry (Lycium barbarum L.) fruit extract and their photocatalytic and antibacterial applications

Silver-titania nanocomposites (Ag-TiO2 NCs) have unique functional attributes due to their photocatalytic and antibacterial properties. In this study, titania nanoparticles (TiO2-NPs) were successfully in-situ decorated with silver nanoparticles (Ag-NPs) using the aqueous extract of goji berries (Ly...

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Autores principales:	Abdulrahman Ahmed Sharwani, Kannan Badri Narayanan, Mohammad Ehtisham Khan, Sung Soo Han
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Nanocomposites Silver Titania Goji berries Antibacterial Photocatalyst Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/5b0306c9d32d4caab3ff074f6c086fa0
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spelling	oai:doaj.org-article:5b0306c9d32d4caab3ff074f6c086fa02021-11-20T04:58:13ZSustainable fabrication of silver-titania nanocomposites using goji berry (Lycium barbarum L.) fruit extract and their photocatalytic and antibacterial applications1878-535210.1016/j.arabjc.2021.103456https://doaj.org/article/5b0306c9d32d4caab3ff074f6c086fa02021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S1878535221004718https://doaj.org/toc/1878-5352Silver-titania nanocomposites (Ag-TiO2 NCs) have unique functional attributes due to their photocatalytic and antibacterial properties. In this study, titania nanoparticles (TiO2-NPs) were successfully in-situ decorated with silver nanoparticles (Ag-NPs) using the aqueous extract of goji berries (Lycium barbarum L.) as a bioreducing and stabilizing agent. Different Ag-TiO2 NCs were synthesized by treating different concentrations of silver nitrate with a specific concentration of TiO2-NPs in the presence of fruit extract. The green-synthesized NCs were characterized using several techniques viz., ultraviolet–visible spectrophotometry, X-ray diffractometry (XRD), scanning electron microscopy, field-emission transmission electron microscopy (FE-TEM), Fourier transform infrared spectroscopy, and X-ray photoelectron spectroscopy. XRD analysis revealed the formation of face-centered cubic (fcc) crystals, and FE-TEM analysis revealed the embedment of Ag-NPs throughout the surface of TiO2-NPs. The average size of Ag-NPs on TiO2-NPs increased from 11.2 ± 3.05 nm to 16.4 ± 4.5 nm with an increase in the concentration of silver ions, and the morphology of Ag-NPs was predominantly quasi-spherical and hexagonal. These NCs exhibited an excellent photocatalytic degradation of an azo dye, methylene blue (MB). The synthesized Ag-TiO2 NCs (3:1) showed higher photocatalytic degradation efficiency of ∼ 93.4% for MB in 130 min under visible light irradiation. Ag-TiO2 NCS also exhibited good antibacterial activities towards Staphylococcus aureus (Gram-positive) and Escherichia coli (Gram-negative). Therefore, the formation of Ag-NPs on the surface of TiO2-NPs to form Ag-TiO2 NCs exhibits eco-friendly photocatalytic degradation of azo dye contaminants as well as antibacterial activity.Abdulrahman Ahmed SharwaniKannan Badri NarayananMohammad Ehtisham KhanSung Soo HanElsevierarticleNanocompositesSilverTitaniaGoji berriesAntibacterialPhotocatalystChemistryQD1-999ENArabian Journal of Chemistry, Vol 14, Iss 12, Pp 103456- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Nanocomposites Silver Titania Goji berries Antibacterial Photocatalyst Chemistry QD1-999
spellingShingle	Nanocomposites Silver Titania Goji berries Antibacterial Photocatalyst Chemistry QD1-999 Abdulrahman Ahmed Sharwani Kannan Badri Narayanan Mohammad Ehtisham Khan Sung Soo Han Sustainable fabrication of silver-titania nanocomposites using goji berry (Lycium barbarum L.) fruit extract and their photocatalytic and antibacterial applications
description	Silver-titania nanocomposites (Ag-TiO2 NCs) have unique functional attributes due to their photocatalytic and antibacterial properties. In this study, titania nanoparticles (TiO2-NPs) were successfully in-situ decorated with silver nanoparticles (Ag-NPs) using the aqueous extract of goji berries (Lycium barbarum L.) as a bioreducing and stabilizing agent. Different Ag-TiO2 NCs were synthesized by treating different concentrations of silver nitrate with a specific concentration of TiO2-NPs in the presence of fruit extract. The green-synthesized NCs were characterized using several techniques viz., ultraviolet–visible spectrophotometry, X-ray diffractometry (XRD), scanning electron microscopy, field-emission transmission electron microscopy (FE-TEM), Fourier transform infrared spectroscopy, and X-ray photoelectron spectroscopy. XRD analysis revealed the formation of face-centered cubic (fcc) crystals, and FE-TEM analysis revealed the embedment of Ag-NPs throughout the surface of TiO2-NPs. The average size of Ag-NPs on TiO2-NPs increased from 11.2 ± 3.05 nm to 16.4 ± 4.5 nm with an increase in the concentration of silver ions, and the morphology of Ag-NPs was predominantly quasi-spherical and hexagonal. These NCs exhibited an excellent photocatalytic degradation of an azo dye, methylene blue (MB). The synthesized Ag-TiO2 NCs (3:1) showed higher photocatalytic degradation efficiency of ∼ 93.4% for MB in 130 min under visible light irradiation. Ag-TiO2 NCS also exhibited good antibacterial activities towards Staphylococcus aureus (Gram-positive) and Escherichia coli (Gram-negative). Therefore, the formation of Ag-NPs on the surface of TiO2-NPs to form Ag-TiO2 NCs exhibits eco-friendly photocatalytic degradation of azo dye contaminants as well as antibacterial activity.
format	article
author	Abdulrahman Ahmed Sharwani Kannan Badri Narayanan Mohammad Ehtisham Khan Sung Soo Han
author_facet	Abdulrahman Ahmed Sharwani Kannan Badri Narayanan Mohammad Ehtisham Khan Sung Soo Han
author_sort	Abdulrahman Ahmed Sharwani
title	Sustainable fabrication of silver-titania nanocomposites using goji berry (Lycium barbarum L.) fruit extract and their photocatalytic and antibacterial applications
title_short	Sustainable fabrication of silver-titania nanocomposites using goji berry (Lycium barbarum L.) fruit extract and their photocatalytic and antibacterial applications
title_full	Sustainable fabrication of silver-titania nanocomposites using goji berry (Lycium barbarum L.) fruit extract and their photocatalytic and antibacterial applications
title_fullStr	Sustainable fabrication of silver-titania nanocomposites using goji berry (Lycium barbarum L.) fruit extract and their photocatalytic and antibacterial applications
title_full_unstemmed	Sustainable fabrication of silver-titania nanocomposites using goji berry (Lycium barbarum L.) fruit extract and their photocatalytic and antibacterial applications
title_sort	sustainable fabrication of silver-titania nanocomposites using goji berry (lycium barbarum l.) fruit extract and their photocatalytic and antibacterial applications
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/5b0306c9d32d4caab3ff074f6c086fa0
work_keys_str_mv	AT abdulrahmanahmedsharwani sustainablefabricationofsilvertitaniananocompositesusinggojiberrylyciumbarbarumlfruitextractandtheirphotocatalyticandantibacterialapplications AT kannanbadrinarayanan sustainablefabricationofsilvertitaniananocompositesusinggojiberrylyciumbarbarumlfruitextractandtheirphotocatalyticandantibacterialapplications AT mohammadehtishamkhan sustainablefabricationofsilvertitaniananocompositesusinggojiberrylyciumbarbarumlfruitextractandtheirphotocatalyticandantibacterialapplications AT sungsoohan sustainablefabricationofsilvertitaniananocompositesusinggojiberrylyciumbarbarumlfruitextractandtheirphotocatalyticandantibacterialapplications
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Sustainable fabrication of silver-titania nanocomposites using goji berry (Lycium barbarum L.) fruit extract and their photocatalytic and antibacterial applications

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