Customized In Situ Functionalization of Nanodiamonds with Nanoparticles for Composite Carbon-Paste Electrodes
The incorporation of nanomaterials on (bio)sensors based on composite materials has led to important advances in the analytical chemistry field due to the extraordinary properties that these materials offer. Nanodiamonds (NDs) are a novel type of material that has raised much attention, as they have...
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doaj-a0cffa0b023a47ed8ec6403daae18adb2020-11-25T03:11:29ZengMDPI AGNanomaterials2079-49912020-06-01101179117910.3390/nano10061179Customized In Situ Functionalization of Nanodiamonds with Nanoparticles for Composite Carbon-Paste ElectrodesRaquel Montes0Gerard Sánchez1Jingjing Zhao2Cristina Palet3Mireia Baeza4Julio Bastos-Arrieta5GENOCOV Research Group, Department of Chemical, Biological and Environmental Engineering, School of Engineering, Universitat Autònoma de Barcelona, Carrer de les Sitges, 08193 Bellaterra (Cerdanyola del Vallès), SpainGENOCOV Research Group, Department of Chemistry, Faculty of Science, Edifici C-Nord, Universitat Autònoma de Barcelona, Carrer dels Til·lers, 08193 Bellaterra (Cerdanyola del Vallès), SpainGrup de Tècniques de Separació en Química, Department of Chemistry, Facultat de Ciències, Universitat Autònoma de Barcelona, Carrer dels Til·lers, 08193 Cerdanyola del Vallès, SpainGrup de Tècniques de Separació en Química, Department of Chemistry, Facultat de Ciències, Universitat Autònoma de Barcelona, Carrer dels Til·lers, 08193 Cerdanyola del Vallès, SpainGENOCOV Research Group, Department of Chemistry, Faculty of Science, Edifici C-Nord, Universitat Autònoma de Barcelona, Carrer dels Til·lers, 08193 Bellaterra (Cerdanyola del Vallès), SpainPhysical Chemistry TU Dresden, Zellescher Weg 19, 01069 Dresden, GermanyThe incorporation of nanomaterials on (bio)sensors based on composite materials has led to important advances in the analytical chemistry field due to the extraordinary properties that these materials offer. Nanodiamonds (NDs) are a novel type of material that has raised much attention, as they have the possibility of being produced on a large scale by relatively inexpensive synthetic methodologies. Moreover, NDs can present some other interesting features, such as fluorescence, due to surface functionalization and proved biocompatibility, which makes them suitable for biomedical applications. In addition, NDs can be customized with metallic nanoparticles (NPs), such as silver or gold, in order to combine the features of both. Raw NDs were used as modifiers of sensors due to the electrocatalytic effect of the sp<sup>2</sup> and oxygenated species present on their surface. The aim of this research work is evaluating the applicability of NDs modified with silver (Ag@NDs) and gold (Au@NDs) nanoparticles for the development of a suitable (bio)sensing platform. A complete morphological and electrochemical characterization as a function of the prepared nanocomposite composition was performed in order to improve the electroanalytical properties of the developed (bio)sensors. In the present work, the optimal composition for Au@NDs present on the nanocomposite matrix is 3.5% and the one for Ag@NDs is 1%. Good results were obtained in the evaluation of the optimal composition towards hydrogen peroxide and glucose as a model analyte using a (bio)sensor based on graphite-epoxy-Ag@NDs (17:82:1).https://www.mdpi.com/2079-4991/10/6/1179carbon nanostructuresnanodiamondsgraphiteoptimal compositionmetal nanoparticleselectrochemical (bio)sensor |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Raquel Montes Gerard Sánchez Jingjing Zhao Cristina Palet Mireia Baeza Julio Bastos-Arrieta |
spellingShingle |
Raquel Montes Gerard Sánchez Jingjing Zhao Cristina Palet Mireia Baeza Julio Bastos-Arrieta Customized In Situ Functionalization of Nanodiamonds with Nanoparticles for Composite Carbon-Paste Electrodes Nanomaterials carbon nanostructures nanodiamonds graphite optimal composition metal nanoparticles electrochemical (bio)sensor |
author_facet |
Raquel Montes Gerard Sánchez Jingjing Zhao Cristina Palet Mireia Baeza Julio Bastos-Arrieta |
author_sort |
Raquel Montes |
title |
Customized In Situ Functionalization of Nanodiamonds with Nanoparticles for Composite Carbon-Paste Electrodes |
title_short |
Customized In Situ Functionalization of Nanodiamonds with Nanoparticles for Composite Carbon-Paste Electrodes |
title_full |
Customized In Situ Functionalization of Nanodiamonds with Nanoparticles for Composite Carbon-Paste Electrodes |
title_fullStr |
Customized In Situ Functionalization of Nanodiamonds with Nanoparticles for Composite Carbon-Paste Electrodes |
title_full_unstemmed |
Customized In Situ Functionalization of Nanodiamonds with Nanoparticles for Composite Carbon-Paste Electrodes |
title_sort |
customized in situ functionalization of nanodiamonds with nanoparticles for composite carbon-paste electrodes |
publisher |
MDPI AG |
series |
Nanomaterials |
issn |
2079-4991 |
publishDate |
2020-06-01 |
description |
The incorporation of nanomaterials on (bio)sensors based on composite materials has led to important advances in the analytical chemistry field due to the extraordinary properties that these materials offer. Nanodiamonds (NDs) are a novel type of material that has raised much attention, as they have the possibility of being produced on a large scale by relatively inexpensive synthetic methodologies. Moreover, NDs can present some other interesting features, such as fluorescence, due to surface functionalization and proved biocompatibility, which makes them suitable for biomedical applications. In addition, NDs can be customized with metallic nanoparticles (NPs), such as silver or gold, in order to combine the features of both. Raw NDs were used as modifiers of sensors due to the electrocatalytic effect of the sp<sup>2</sup> and oxygenated species present on their surface. The aim of this research work is evaluating the applicability of NDs modified with silver (Ag@NDs) and gold (Au@NDs) nanoparticles for the development of a suitable (bio)sensing platform. A complete morphological and electrochemical characterization as a function of the prepared nanocomposite composition was performed in order to improve the electroanalytical properties of the developed (bio)sensors. In the present work, the optimal composition for Au@NDs present on the nanocomposite matrix is 3.5% and the one for Ag@NDs is 1%. Good results were obtained in the evaluation of the optimal composition towards hydrogen peroxide and glucose as a model analyte using a (bio)sensor based on graphite-epoxy-Ag@NDs (17:82:1). |
topic |
carbon nanostructures nanodiamonds graphite optimal composition metal nanoparticles electrochemical (bio)sensor |
url |
https://www.mdpi.com/2079-4991/10/6/1179 |
work_keys_str_mv |
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