Effects of covalent versus non-covalent interactions on the electrocatalytic behavior of tetracarboxyphenoxyphthalocyanine in the presence of multi-walled carbon nanotubes
Tetracarboxyphenoxy phthalocyanine was covalently linked to multi-walled carbon nanotubes and the conjugate was used for modification of glassy carbon electrodes for the detection of hydrogen peroxide. The electrocatalytic behavior was examined by cyclic voltammetry, square wave voltammetry, and rot...
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Taylor & Francis
2018
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| Online Access: | https://www.tandfonline.com/doi/abs/10.1080/00958972.2017.1303679 http://hdl.handle.net/11408/3395 |
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| author | Shumba, Munyaradzi Nyokong, Tebello |
| author_facet | Shumba, Munyaradzi Nyokong, Tebello |
| author_sort | Shumba, Munyaradzi |
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| description | Tetracarboxyphenoxy phthalocyanine was covalently linked to multi-walled carbon nanotubes and the conjugate was used for modification of glassy carbon electrodes for the detection of hydrogen peroxide. The electrocatalytic behavior was examined by cyclic voltammetry, square wave voltammetry, and rotating disk electrode. The results show that covalent linking is attractive in terms of high detecting currents, low overpotential, and high catalytic rate constants. Very low detection limits were observed with CoTCPhPc-DAMN-MWCNT(linked)-GCE at 0.33 nM. The resulting catalytic rate constant was 1.1 × 103 M−1s−1. |
| format | Article |
| id | ir-11408-3395 |
| institution | My University |
| language | English |
| publishDate | 2018 |
| publisher | Taylor & Francis |
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| spelling | ir-11408-33952022-06-27T13:49:06Z Effects of covalent versus non-covalent interactions on the electrocatalytic behavior of tetracarboxyphenoxyphthalocyanine in the presence of multi-walled carbon nanotubes Shumba, Munyaradzi Nyokong, Tebello Tetracarboxyphenoxyphthalocyanine Electrocatalysis Multi-walled carbon nanotubes Hydrogen peroxide Tetracarboxyphenoxy phthalocyanine was covalently linked to multi-walled carbon nanotubes and the conjugate was used for modification of glassy carbon electrodes for the detection of hydrogen peroxide. The electrocatalytic behavior was examined by cyclic voltammetry, square wave voltammetry, and rotating disk electrode. The results show that covalent linking is attractive in terms of high detecting currents, low overpotential, and high catalytic rate constants. Very low detection limits were observed with CoTCPhPc-DAMN-MWCNT(linked)-GCE at 0.33 nM. The resulting catalytic rate constant was 1.1 × 103 M−1s−1. 2018-12-03T13:04:59Z 2018-12-03T13:04:59Z 2017 Article 0095-8972 https://www.tandfonline.com/doi/abs/10.1080/00958972.2017.1303679 http://hdl.handle.net/11408/3395 en Journal of Coordination Chemistry;Vol. 70, No. 9: p. 1585-1600 open Taylor & Francis |
| spellingShingle | Tetracarboxyphenoxyphthalocyanine Electrocatalysis Multi-walled carbon nanotubes Hydrogen peroxide Shumba, Munyaradzi Nyokong, Tebello Effects of covalent versus non-covalent interactions on the electrocatalytic behavior of tetracarboxyphenoxyphthalocyanine in the presence of multi-walled carbon nanotubes |
| title | Effects of covalent versus non-covalent interactions on the electrocatalytic behavior of tetracarboxyphenoxyphthalocyanine in the presence of multi-walled carbon nanotubes |
| title_full | Effects of covalent versus non-covalent interactions on the electrocatalytic behavior of tetracarboxyphenoxyphthalocyanine in the presence of multi-walled carbon nanotubes |
| title_fullStr | Effects of covalent versus non-covalent interactions on the electrocatalytic behavior of tetracarboxyphenoxyphthalocyanine in the presence of multi-walled carbon nanotubes |
| title_full_unstemmed | Effects of covalent versus non-covalent interactions on the electrocatalytic behavior of tetracarboxyphenoxyphthalocyanine in the presence of multi-walled carbon nanotubes |
| title_short | Effects of covalent versus non-covalent interactions on the electrocatalytic behavior of tetracarboxyphenoxyphthalocyanine in the presence of multi-walled carbon nanotubes |
| title_sort | effects of covalent versus non-covalent interactions on the electrocatalytic behavior of tetracarboxyphenoxyphthalocyanine in the presence of multi-walled carbon nanotubes |
| topic | Tetracarboxyphenoxyphthalocyanine Electrocatalysis Multi-walled carbon nanotubes Hydrogen peroxide |
| url | https://www.tandfonline.com/doi/abs/10.1080/00958972.2017.1303679 http://hdl.handle.net/11408/3395 |
| work_keys_str_mv | AT shumbamunyaradzi effectsofcovalentversusnoncovalentinteractionsontheelectrocatalyticbehavioroftetracarboxyphenoxyphthalocyanineinthepresenceofmultiwalledcarbonnanotubes AT nyokongtebello effectsofcovalentversusnoncovalentinteractionsontheelectrocatalyticbehavioroftetracarboxyphenoxyphthalocyanineinthepresenceofmultiwalledcarbonnanotubes |