Cargando…

Electrochemical preparation of monodisperse Pt nanoparticles on a grafted 4-aminothiophenol supporting layer for improving the MOR reaction

The methanol oxidation reaction (MOR) has recently gained a lot of attention due to its application in fuel cells and electrochemical sensors. To enhance the MOR, noble metal nanoparticles should be homogeneously dispersed on the electrode surface with the aid of one suitable support. In this work,...

Descripción completa

Detalles Bibliográficos
Autores principales: Hoang, Nguyen Tien, Thuan Nguyen, Pham Truong, Chung, Pham Do, Thu Ha, Vu Thi, Hung, Tran Quang, Nam, Pham Thi, Thu, Vu Thi
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8982339/
https://www.ncbi.nlm.nih.gov/pubmed/35424755
http://dx.doi.org/10.1039/d2ra00040g
_version_ 1784681788645310464
author Hoang, Nguyen Tien
Thuan Nguyen, Pham Truong
Chung, Pham Do
Thu Ha, Vu Thi
Hung, Tran Quang
Nam, Pham Thi
Thu, Vu Thi
author_facet Hoang, Nguyen Tien
Thuan Nguyen, Pham Truong
Chung, Pham Do
Thu Ha, Vu Thi
Hung, Tran Quang
Nam, Pham Thi
Thu, Vu Thi
author_sort Hoang, Nguyen Tien
collection PubMed
description The methanol oxidation reaction (MOR) has recently gained a lot of attention due to its application in fuel cells and electrochemical sensors. To enhance the MOR, noble metal nanoparticles should be homogeneously dispersed on the electrode surface with the aid of one suitable support. In this work, 4-aminothiophenol (4-ATP) molecules which contain simultaneously amine and thiol groups were electro-grafted onto the electrode surface to provide anchoring sites, limit aggregation and ensure good dispersion of metal nanoparticles. The results showed a high density of platinum nanoparticles (PtNPs) with an average size of 25 nm on the glassy electrode modified with a 4-ATP supporting layer. Consequently, the MOR was improved by 2.1 times with the aid of the grafted 4-ATP layer. The electrochemical sensor based on PtNPs/4-ATP/GCE is able to detect MeOH in a linear range from 1.26 to 21.42 mM with a detection limit of 1.21 mM.
format Online
Article
Text
id pubmed-8982339
institution National Center for Biotechnology Information
language English
publishDate 2022
publisher The Royal Society of Chemistry
record_format MEDLINE/PubMed
spelling pubmed-89823392022-04-13 Electrochemical preparation of monodisperse Pt nanoparticles on a grafted 4-aminothiophenol supporting layer for improving the MOR reaction Hoang, Nguyen Tien Thuan Nguyen, Pham Truong Chung, Pham Do Thu Ha, Vu Thi Hung, Tran Quang Nam, Pham Thi Thu, Vu Thi RSC Adv Chemistry The methanol oxidation reaction (MOR) has recently gained a lot of attention due to its application in fuel cells and electrochemical sensors. To enhance the MOR, noble metal nanoparticles should be homogeneously dispersed on the electrode surface with the aid of one suitable support. In this work, 4-aminothiophenol (4-ATP) molecules which contain simultaneously amine and thiol groups were electro-grafted onto the electrode surface to provide anchoring sites, limit aggregation and ensure good dispersion of metal nanoparticles. The results showed a high density of platinum nanoparticles (PtNPs) with an average size of 25 nm on the glassy electrode modified with a 4-ATP supporting layer. Consequently, the MOR was improved by 2.1 times with the aid of the grafted 4-ATP layer. The electrochemical sensor based on PtNPs/4-ATP/GCE is able to detect MeOH in a linear range from 1.26 to 21.42 mM with a detection limit of 1.21 mM. The Royal Society of Chemistry 2022-03-14 /pmc/articles/PMC8982339/ /pubmed/35424755 http://dx.doi.org/10.1039/d2ra00040g Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Hoang, Nguyen Tien
Thuan Nguyen, Pham Truong
Chung, Pham Do
Thu Ha, Vu Thi
Hung, Tran Quang
Nam, Pham Thi
Thu, Vu Thi
Electrochemical preparation of monodisperse Pt nanoparticles on a grafted 4-aminothiophenol supporting layer for improving the MOR reaction
title Electrochemical preparation of monodisperse Pt nanoparticles on a grafted 4-aminothiophenol supporting layer for improving the MOR reaction
title_full Electrochemical preparation of monodisperse Pt nanoparticles on a grafted 4-aminothiophenol supporting layer for improving the MOR reaction
title_fullStr Electrochemical preparation of monodisperse Pt nanoparticles on a grafted 4-aminothiophenol supporting layer for improving the MOR reaction
title_full_unstemmed Electrochemical preparation of monodisperse Pt nanoparticles on a grafted 4-aminothiophenol supporting layer for improving the MOR reaction
title_short Electrochemical preparation of monodisperse Pt nanoparticles on a grafted 4-aminothiophenol supporting layer for improving the MOR reaction
title_sort electrochemical preparation of monodisperse pt nanoparticles on a grafted 4-aminothiophenol supporting layer for improving the mor reaction
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8982339/
https://www.ncbi.nlm.nih.gov/pubmed/35424755
http://dx.doi.org/10.1039/d2ra00040g
work_keys_str_mv AT hoangnguyentien electrochemicalpreparationofmonodisperseptnanoparticlesonagrafted4aminothiophenolsupportinglayerforimprovingthemorreaction
AT thuannguyenphamtruong electrochemicalpreparationofmonodisperseptnanoparticlesonagrafted4aminothiophenolsupportinglayerforimprovingthemorreaction
AT chungphamdo electrochemicalpreparationofmonodisperseptnanoparticlesonagrafted4aminothiophenolsupportinglayerforimprovingthemorreaction
AT thuhavuthi electrochemicalpreparationofmonodisperseptnanoparticlesonagrafted4aminothiophenolsupportinglayerforimprovingthemorreaction
AT hungtranquang electrochemicalpreparationofmonodisperseptnanoparticlesonagrafted4aminothiophenolsupportinglayerforimprovingthemorreaction
AT namphamthi electrochemicalpreparationofmonodisperseptnanoparticlesonagrafted4aminothiophenolsupportinglayerforimprovingthemorreaction
AT thuvuthi electrochemicalpreparationofmonodisperseptnanoparticlesonagrafted4aminothiophenolsupportinglayerforimprovingthemorreaction