A novel 1D/2D Bi2S3/g-C3N4 core–shell nanocomposite as a highly performing H2O2 non-enzymatic electrochemical sensor

We report the synthesis of a new non-enzymatic H2O2 electrochemical sensor based on the Bi2S3/g-C3N4 core–shell nanocomposite. The Bi2S3/g-C3N4 nanocomposite was synthesized via the solvothermal process. It was characterized by XRD and TEM to identify its phase and to determine its morphology. The r...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Abdelhak Othmani, Maram Derbali, Rafik Kalfat, Fathi Touati, Hassouna Dhaouadi
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Non-enzymatic sensors Nanocomposite Core-shell Bi2S3/g-C3N4 H2O2 Mining engineering. Metallurgy TN1-997
Acceso en línea:	https://doaj.org/article/231121a1b8a5474e80982a9f647d5651
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:231121a1b8a5474e80982a9f647d5651
record_format	dspace
spelling	oai:doaj.org-article:231121a1b8a5474e80982a9f647d56512021-11-26T04:30:50ZA novel 1D/2D Bi2S3/g-C3N4 core–shell nanocomposite as a highly performing H2O2 non-enzymatic electrochemical sensor2238-785410.1016/j.jmrt.2021.10.140https://doaj.org/article/231121a1b8a5474e80982a9f647d56512021-11-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2238785421012771https://doaj.org/toc/2238-7854We report the synthesis of a new non-enzymatic H2O2 electrochemical sensor based on the Bi2S3/g-C3N4 core–shell nanocomposite. The Bi2S3/g-C3N4 nanocomposite was synthesized via the solvothermal process. It was characterized by XRD and TEM to identify its phase and to determine its morphology. The response of Bi2S3/g-C3N4 nanocomposite to hydrogen peroxide was investigated using the cyclic voltammetry and amperometry techniques. The obtained results show that the association of g-C3N4 nanosheets with Bi2S3 nanorods enhances the electrochemical behavior and the overall performance of the sensor. Indeed, we noted an enhanced electrochemical signal of the Bi2S3/g-C3N4 core–shell nanocomposite shown by the appearance of a H2O2 oxidation peak at around 0.26 V. Moreover, the modified Bi2S3/g-C3N4 electrode sensor demonstrated a wide linear range for H2O2 from 0.5 to 950 μM with a sensitivity of 1011 μA mM−1cm−2 and a detection limit of 78 nM. These performances are much better than those for Bi2S3 and g-C3N4 taken separately. The improved electrocatalytic activity of the sensor towards hydrogen peroxide oxidation is mainly attributed to the morphology of the core–shell nanostructure leading to the enrichment of electroactive sites for the catalytic reaction of H2O2. Additionally, the proposed sensor was successfully tested in skimmed milk and human urine samples. The novelty of this work is the simple way to synthesis Bi2S3/g-C3N4 core–shell nanostructure and its use as a H2O2 sensor, which paves the way for the synthesis of new nanomaterial heterostructures used as electrochemical sensors for detecting other molecules.Abdelhak OthmaniMaram DerbaliRafik KalfatFathi TouatiHassouna DhaouadiElsevierarticleNon-enzymatic sensorsNanocompositeCore-shellBi2S3/g-C3N4H2O2Mining engineering. MetallurgyTN1-997ENJournal of Materials Research and Technology, Vol 15, Iss , Pp 5762-5775 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Non-enzymatic sensors Nanocomposite Core-shell Bi2S3/g-C3N4 H2O2 Mining engineering. Metallurgy TN1-997
spellingShingle	Non-enzymatic sensors Nanocomposite Core-shell Bi2S3/g-C3N4 H2O2 Mining engineering. Metallurgy TN1-997 Abdelhak Othmani Maram Derbali Rafik Kalfat Fathi Touati Hassouna Dhaouadi A novel 1D/2D Bi2S3/g-C3N4 core–shell nanocomposite as a highly performing H2O2 non-enzymatic electrochemical sensor
description	We report the synthesis of a new non-enzymatic H2O2 electrochemical sensor based on the Bi2S3/g-C3N4 core–shell nanocomposite. The Bi2S3/g-C3N4 nanocomposite was synthesized via the solvothermal process. It was characterized by XRD and TEM to identify its phase and to determine its morphology. The response of Bi2S3/g-C3N4 nanocomposite to hydrogen peroxide was investigated using the cyclic voltammetry and amperometry techniques. The obtained results show that the association of g-C3N4 nanosheets with Bi2S3 nanorods enhances the electrochemical behavior and the overall performance of the sensor. Indeed, we noted an enhanced electrochemical signal of the Bi2S3/g-C3N4 core–shell nanocomposite shown by the appearance of a H2O2 oxidation peak at around 0.26 V. Moreover, the modified Bi2S3/g-C3N4 electrode sensor demonstrated a wide linear range for H2O2 from 0.5 to 950 μM with a sensitivity of 1011 μA mM−1cm−2 and a detection limit of 78 nM. These performances are much better than those for Bi2S3 and g-C3N4 taken separately. The improved electrocatalytic activity of the sensor towards hydrogen peroxide oxidation is mainly attributed to the morphology of the core–shell nanostructure leading to the enrichment of electroactive sites for the catalytic reaction of H2O2. Additionally, the proposed sensor was successfully tested in skimmed milk and human urine samples. The novelty of this work is the simple way to synthesis Bi2S3/g-C3N4 core–shell nanostructure and its use as a H2O2 sensor, which paves the way for the synthesis of new nanomaterial heterostructures used as electrochemical sensors for detecting other molecules.
format	article
author	Abdelhak Othmani Maram Derbali Rafik Kalfat Fathi Touati Hassouna Dhaouadi
author_facet	Abdelhak Othmani Maram Derbali Rafik Kalfat Fathi Touati Hassouna Dhaouadi
author_sort	Abdelhak Othmani
title	A novel 1D/2D Bi2S3/g-C3N4 core–shell nanocomposite as a highly performing H2O2 non-enzymatic electrochemical sensor
title_short	A novel 1D/2D Bi2S3/g-C3N4 core–shell nanocomposite as a highly performing H2O2 non-enzymatic electrochemical sensor
title_full	A novel 1D/2D Bi2S3/g-C3N4 core–shell nanocomposite as a highly performing H2O2 non-enzymatic electrochemical sensor
title_fullStr	A novel 1D/2D Bi2S3/g-C3N4 core–shell nanocomposite as a highly performing H2O2 non-enzymatic electrochemical sensor
title_full_unstemmed	A novel 1D/2D Bi2S3/g-C3N4 core–shell nanocomposite as a highly performing H2O2 non-enzymatic electrochemical sensor
title_sort	novel 1d/2d bi2s3/g-c3n4 core–shell nanocomposite as a highly performing h2o2 non-enzymatic electrochemical sensor
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/231121a1b8a5474e80982a9f647d5651
work_keys_str_mv	AT abdelhakothmani anovel1d2dbi2s3gc3n4coreshellnanocompositeasahighlyperformingh2o2nonenzymaticelectrochemicalsensor AT maramderbali anovel1d2dbi2s3gc3n4coreshellnanocompositeasahighlyperformingh2o2nonenzymaticelectrochemicalsensor AT rafikkalfat anovel1d2dbi2s3gc3n4coreshellnanocompositeasahighlyperformingh2o2nonenzymaticelectrochemicalsensor AT fathitouati anovel1d2dbi2s3gc3n4coreshellnanocompositeasahighlyperformingh2o2nonenzymaticelectrochemicalsensor AT hassounadhaouadi anovel1d2dbi2s3gc3n4coreshellnanocompositeasahighlyperformingh2o2nonenzymaticelectrochemicalsensor AT abdelhakothmani novel1d2dbi2s3gc3n4coreshellnanocompositeasahighlyperformingh2o2nonenzymaticelectrochemicalsensor AT maramderbali novel1d2dbi2s3gc3n4coreshellnanocompositeasahighlyperformingh2o2nonenzymaticelectrochemicalsensor AT rafikkalfat novel1d2dbi2s3gc3n4coreshellnanocompositeasahighlyperformingh2o2nonenzymaticelectrochemicalsensor AT fathitouati novel1d2dbi2s3gc3n4coreshellnanocompositeasahighlyperformingh2o2nonenzymaticelectrochemicalsensor AT hassounadhaouadi novel1d2dbi2s3gc3n4coreshellnanocompositeasahighlyperformingh2o2nonenzymaticelectrochemicalsensor
_version_	1718409828272963584

A novel 1D/2D Bi2S3/g-C3N4 core–shell nanocomposite as a highly performing H2O2 non-enzymatic electrochemical sensor

Ejemplares similares