Eutectic mixture-functionalized carbon nanomaterials for selective amperometric detection of nitrite using modified glassy carbon electrode
Choline chloride-urea (CU) (1:2 M ratio) was used to functionalize two types of carbon nanomaterials (CNMs); multiwall carbon nanotube (MWCNT) and graphene (Gr). A composite of both components was used to modify the surface of glassy carbon electrode (GCE) designated as (CU/MWCNT/Gr/GCE). CU-functio...
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| Format: | Article |
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Elsevier
2018
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| _version_ | 1796961685500592128 |
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| author | Abo-Hamad, Ali AlSaadi, Mohammed AbdulHakim Hashim, Mohd Ali |
| author_facet | Abo-Hamad, Ali AlSaadi, Mohammed AbdulHakim Hashim, Mohd Ali |
| author_sort | Abo-Hamad, Ali |
| collection | UM |
| description | Choline chloride-urea (CU) (1:2 M ratio) was used to functionalize two types of carbon nanomaterials (CNMs); multiwall carbon nanotube (MWCNT) and graphene (Gr). A composite of both components was used to modify the surface of glassy carbon electrode (GCE) designated as (CU/MWCNT/Gr/GCE). CU-functionalized CNMs modified GCs have shown higher catalytic activity towards the oxidation of nitrite (NO2−) compared to bare and pristine CNM modified electrodes. However, the highest performance was found for a mixture of Gr and MWCNT (50% w/w). CU-functionalized CNMs were characterized by scanning electron microscope, Raman spectroscopy and X-ray diffraction. It has been hypothesized that covalent functionalization and exfoliation were responsible for the improvement in electrocatalytic activity of the modified electrode. CU/MWCNT/Gr/GCE presented a good stability, reproducibility with a detection limit 0.30 μM and a linear range between 5 μM–360 μM. |
| first_indexed | 2024-03-06T05:57:48Z |
| format | Article |
| id | um.eprints-22724 |
| institution | Universiti Malaya |
| last_indexed | 2024-03-06T05:57:48Z |
| publishDate | 2018 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | um.eprints-227242019-10-14T02:33:38Z http://eprints.um.edu.my/22724/ Eutectic mixture-functionalized carbon nanomaterials for selective amperometric detection of nitrite using modified glassy carbon electrode Abo-Hamad, Ali AlSaadi, Mohammed AbdulHakim Hashim, Mohd Ali TP Chemical technology Choline chloride-urea (CU) (1:2 M ratio) was used to functionalize two types of carbon nanomaterials (CNMs); multiwall carbon nanotube (MWCNT) and graphene (Gr). A composite of both components was used to modify the surface of glassy carbon electrode (GCE) designated as (CU/MWCNT/Gr/GCE). CU-functionalized CNMs modified GCs have shown higher catalytic activity towards the oxidation of nitrite (NO2−) compared to bare and pristine CNM modified electrodes. However, the highest performance was found for a mixture of Gr and MWCNT (50% w/w). CU-functionalized CNMs were characterized by scanning electron microscope, Raman spectroscopy and X-ray diffraction. It has been hypothesized that covalent functionalization and exfoliation were responsible for the improvement in electrocatalytic activity of the modified electrode. CU/MWCNT/Gr/GCE presented a good stability, reproducibility with a detection limit 0.30 μM and a linear range between 5 μM–360 μM. Elsevier 2018 Article PeerReviewed Abo-Hamad, Ali and AlSaadi, Mohammed AbdulHakim and Hashim, Mohd Ali (2018) Eutectic mixture-functionalized carbon nanomaterials for selective amperometric detection of nitrite using modified glassy carbon electrode. Journal of Electroanalytical Chemistry, 812. pp. 107-114. ISSN 1572-6657, DOI https://doi.org/10.1016/j.jelechem.2018.01.052 <https://doi.org/10.1016/j.jelechem.2018.01.052>. https://doi.org/10.1016/j.jelechem.2018.01.052 doi:10.1016/j.jelechem.2018.01.052 |
| spellingShingle | TP Chemical technology Abo-Hamad, Ali AlSaadi, Mohammed AbdulHakim Hashim, Mohd Ali Eutectic mixture-functionalized carbon nanomaterials for selective amperometric detection of nitrite using modified glassy carbon electrode |
| title | Eutectic mixture-functionalized carbon nanomaterials for selective amperometric detection of nitrite using modified glassy carbon electrode |
| title_full | Eutectic mixture-functionalized carbon nanomaterials for selective amperometric detection of nitrite using modified glassy carbon electrode |
| title_fullStr | Eutectic mixture-functionalized carbon nanomaterials for selective amperometric detection of nitrite using modified glassy carbon electrode |
| title_full_unstemmed | Eutectic mixture-functionalized carbon nanomaterials for selective amperometric detection of nitrite using modified glassy carbon electrode |
| title_short | Eutectic mixture-functionalized carbon nanomaterials for selective amperometric detection of nitrite using modified glassy carbon electrode |
| title_sort | eutectic mixture functionalized carbon nanomaterials for selective amperometric detection of nitrite using modified glassy carbon electrode |
| topic | TP Chemical technology |
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