Effect of RGO-Y2O3 and RGO-Y2O3:Cr3+ nanocomposite sensor for dopamine

Abstract The RGO-Y2O3 and RGO-Y2O3: Cr3+ (5 mol %) nanocomposite (NC) synthesized by hydrothermal technique. The structure and morphology of the synthesized NCs were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). Y2O3:Cr3+ di...

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Autores principales:	J. K. Shashikumara, Bhimanagouda Kalaburgi, B. E. Kumara Swamy, H. Nagabhushana, S. C. Sharma, P. Lalitha
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/692159f0c88a4c5f9274a6602050f06c
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spelling	oai:doaj.org-article:692159f0c88a4c5f9274a6602050f06c2021-12-02T17:39:23ZEffect of RGO-Y2O3 and RGO-Y2O3:Cr3+ nanocomposite sensor for dopamine10.1038/s41598-021-87749-z2045-2322https://doaj.org/article/692159f0c88a4c5f9274a6602050f06c2021-04-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-87749-zhttps://doaj.org/toc/2045-2322Abstract The RGO-Y2O3 and RGO-Y2O3: Cr3+ (5 mol %) nanocomposite (NC) synthesized by hydrothermal technique. The structure and morphology of the synthesized NCs were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). Y2O3:Cr3+ displays spherical-shaped particles. Conversely, the surface of the RGO displays a wrinkly texture connecting with the existence of flexible and ultrathin graphene sheets. The photoluminescence (PL) emission spectra showed series of sharp peaks at 490, 591, and 687 nm which corresponding to 4F9/2 → 6H15/2, 4F9/2 → 6H13/2, and 4F9/2 → 6H11/2 transitions and lies in the blue, orange, and red region. The prepared NCs were used for the preparation of modified carbon paste electrodes (MCPE) in the electrochemical detection of dopamine (DA) at pH 7.4. Both modified electrodes provide a good current response towards voltammetric detection of DA. Doping is an effective method to improve the conductivity of Y2O3:Cr3+ and developed a method for the sensor used in analytical applications.J. K. ShashikumaraBhimanagouda KalaburgiB. E. Kumara SwamyH. NagabhushanaS. C. SharmaP. LalithaNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-11 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q J. K. Shashikumara Bhimanagouda Kalaburgi B. E. Kumara Swamy H. Nagabhushana S. C. Sharma P. Lalitha Effect of RGO-Y2O3 and RGO-Y2O3:Cr3+ nanocomposite sensor for dopamine
description	Abstract The RGO-Y2O3 and RGO-Y2O3: Cr3+ (5 mol %) nanocomposite (NC) synthesized by hydrothermal technique. The structure and morphology of the synthesized NCs were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). Y2O3:Cr3+ displays spherical-shaped particles. Conversely, the surface of the RGO displays a wrinkly texture connecting with the existence of flexible and ultrathin graphene sheets. The photoluminescence (PL) emission spectra showed series of sharp peaks at 490, 591, and 687 nm which corresponding to 4F9/2 → 6H15/2, 4F9/2 → 6H13/2, and 4F9/2 → 6H11/2 transitions and lies in the blue, orange, and red region. The prepared NCs were used for the preparation of modified carbon paste electrodes (MCPE) in the electrochemical detection of dopamine (DA) at pH 7.4. Both modified electrodes provide a good current response towards voltammetric detection of DA. Doping is an effective method to improve the conductivity of Y2O3:Cr3+ and developed a method for the sensor used in analytical applications.
format	article
author	J. K. Shashikumara Bhimanagouda Kalaburgi B. E. Kumara Swamy H. Nagabhushana S. C. Sharma P. Lalitha
author_facet	J. K. Shashikumara Bhimanagouda Kalaburgi B. E. Kumara Swamy H. Nagabhushana S. C. Sharma P. Lalitha
author_sort	J. K. Shashikumara
title	Effect of RGO-Y2O3 and RGO-Y2O3:Cr3+ nanocomposite sensor for dopamine
title_short	Effect of RGO-Y2O3 and RGO-Y2O3:Cr3+ nanocomposite sensor for dopamine
title_full	Effect of RGO-Y2O3 and RGO-Y2O3:Cr3+ nanocomposite sensor for dopamine
title_fullStr	Effect of RGO-Y2O3 and RGO-Y2O3:Cr3+ nanocomposite sensor for dopamine
title_full_unstemmed	Effect of RGO-Y2O3 and RGO-Y2O3:Cr3+ nanocomposite sensor for dopamine
title_sort	effect of rgo-y2o3 and rgo-y2o3:cr3+ nanocomposite sensor for dopamine
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/692159f0c88a4c5f9274a6602050f06c
work_keys_str_mv	AT jkshashikumara effectofrgoy2o3andrgoy2o3cr3nanocompositesensorfordopamine AT bhimanagoudakalaburgi effectofrgoy2o3andrgoy2o3cr3nanocompositesensorfordopamine AT bekumaraswamy effectofrgoy2o3andrgoy2o3cr3nanocompositesensorfordopamine AT hnagabhushana effectofrgoy2o3andrgoy2o3cr3nanocompositesensorfordopamine AT scsharma effectofrgoy2o3andrgoy2o3cr3nanocompositesensorfordopamine AT plalitha effectofrgoy2o3andrgoy2o3cr3nanocompositesensorfordopamine
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Effect of RGO-Y2O3 and RGO-Y2O3:Cr3+ nanocomposite sensor for dopamine

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