Fabrication of CdS/Ru(bpy)<sub>3</sub><sup>2+</sup>electrochemiluminescence sensor for detection of catechol
A self-reinforced CdS/Ru(bpy)<sub>3</sub><sup>2+</sup> electrochemiluminescence (ECL) sensor was constructed based on the sensitization of cadmium sulfide quantum dots (CdS QDs) to the ECL signal of tris(2,2'-bipyridyl)ruthenium(Ⅱ) (Ru(bpy)<sub>3</sub><sup...
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Academic Journals Center of Shanghai Normal University
2021
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oai:doaj.org-article:33787eb8143f47dfa2400cb0ac0737c52021-11-12T03:34:00ZFabrication of CdS/Ru(bpy)<sub>3</sub><sup>2+</sup>electrochemiluminescence sensor for detection of catechol1000-513710.3969/J.ISSN.1000-5137.2021.05.003https://doaj.org/article/33787eb8143f47dfa2400cb0ac0737c52021-10-01T00:00:00Zhttp://qktg.shnu.edu.cn/zrb/shsfqkszrb/ch/reader/view_abstract.aspx?file_no=20210503https://doaj.org/toc/1000-5137A self-reinforced CdS/Ru(bpy)<sub>3</sub><sup>2+</sup> electrochemiluminescence (ECL) sensor was constructed based on the sensitization of cadmium sulfide quantum dots (CdS QDs) to the ECL signal of tris(2,2'-bipyridyl)ruthenium(Ⅱ) (Ru(bpy)<sub>3</sub><sup>2+</sup>). CdS QDs were firstcoated dropwise on the electrode surface, and then a tris(2,2'-bipyridyl)ruthenium(Ⅱ) complex with multi-walled carbon nanotubes and gold nanoparticles (MWCNTs-Au NPs-Ru(bpy)<sub>3</sub><sup>2+</sup>)was introduced. The sensor has the characteristics of self enhancement since it contains both ECL material Ru(bpy)<sub>3</sub><sup>2+</sup> and coreactant CDs QDs. The presence of MWCNTs and Au NPs can further amplify the sensor signal. The energy transfer between the electrode oxidation products of catechol and Ru (bpy)<sub>3</sub><sup>2+</sup> led to the quenching of the ECL signal, realizing the sensitive detection of catechol with a linear response range from 5.0×10<sup>-9</sup> to 1.0×10<sup>-5 </sup>mol·L<sup>-1</sup> and a detection limit of 1.5×10<sup>-9</sup> mol·L<sup>-1</sup>. The sensor showed good reproducibility and stability and was used to detect catechol in river water with satisfactory result.LIU TingYANG XuemeiYANG MinliAcademic Journals Center of Shanghai Normal Universityarticleelectrochemiluminescence(ecl) sensortris(2,2'-bipyridyl) ruthenium(ii)(ru(bpy)<sub>3</sub><sup>2+</sup>)cadmium sulfide quantum dots(cds qds)catecholScience (General)Q1-390ENZHJournal of Shanghai Normal University (Natural Sciences), Vol 50, Iss 5, Pp 538-545 (2021) |
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DOAJ |
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DOAJ |
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EN ZH |
| topic |
electrochemiluminescence(ecl) sensor tris(2,2'-bipyridyl) ruthenium(ii)(ru(bpy)<sub>3</sub><sup>2+</sup>) cadmium sulfide quantum dots(cds qds) catechol Science (General) Q1-390 |
| spellingShingle |
electrochemiluminescence(ecl) sensor tris(2,2'-bipyridyl) ruthenium(ii)(ru(bpy)<sub>3</sub><sup>2+</sup>) cadmium sulfide quantum dots(cds qds) catechol Science (General) Q1-390 LIU Ting YANG Xuemei YANG Minli Fabrication of CdS/Ru(bpy)<sub>3</sub><sup>2+</sup>electrochemiluminescence sensor for detection of catechol |
| description |
A self-reinforced CdS/Ru(bpy)<sub>3</sub><sup>2+</sup> electrochemiluminescence (ECL) sensor was constructed based on the sensitization of cadmium sulfide quantum dots (CdS QDs) to the ECL signal of tris(2,2'-bipyridyl)ruthenium(Ⅱ) (Ru(bpy)<sub>3</sub><sup>2+</sup>). CdS QDs were firstcoated dropwise on the electrode surface, and then a tris(2,2'-bipyridyl)ruthenium(Ⅱ) complex with multi-walled carbon nanotubes and gold nanoparticles (MWCNTs-Au NPs-Ru(bpy)<sub>3</sub><sup>2+</sup>)was introduced. The sensor has the characteristics of self enhancement since it contains both ECL material Ru(bpy)<sub>3</sub><sup>2+</sup> and coreactant CDs QDs. The presence of MWCNTs and Au NPs can further amplify the sensor signal. The energy transfer between the electrode oxidation products of catechol and Ru (bpy)<sub>3</sub><sup>2+</sup> led to the quenching of the ECL signal, realizing the sensitive detection of catechol with a linear response range from 5.0×10<sup>-9</sup> to 1.0×10<sup>-5 </sup>mol·L<sup>-1</sup> and a detection limit of 1.5×10<sup>-9</sup> mol·L<sup>-1</sup>. The sensor showed good reproducibility and stability and was used to detect catechol in river water with satisfactory result. |
| format |
article |
| author |
LIU Ting YANG Xuemei YANG Minli |
| author_facet |
LIU Ting YANG Xuemei YANG Minli |
| author_sort |
LIU Ting |
| title |
Fabrication of CdS/Ru(bpy)<sub>3</sub><sup>2+</sup>electrochemiluminescence sensor for detection of catechol |
| title_short |
Fabrication of CdS/Ru(bpy)<sub>3</sub><sup>2+</sup>electrochemiluminescence sensor for detection of catechol |
| title_full |
Fabrication of CdS/Ru(bpy)<sub>3</sub><sup>2+</sup>electrochemiluminescence sensor for detection of catechol |
| title_fullStr |
Fabrication of CdS/Ru(bpy)<sub>3</sub><sup>2+</sup>electrochemiluminescence sensor for detection of catechol |
| title_full_unstemmed |
Fabrication of CdS/Ru(bpy)<sub>3</sub><sup>2+</sup>electrochemiluminescence sensor for detection of catechol |
| title_sort |
fabrication of cds/ru(bpy)<sub>3</sub><sup>2+</sup>electrochemiluminescence sensor for detection of catechol |
| publisher |
Academic Journals Center of Shanghai Normal University |
| publishDate |
2021 |
| url |
https://doaj.org/article/33787eb8143f47dfa2400cb0ac0737c5 |
| work_keys_str_mv |
AT liuting fabricationofcdsrubpysub3subsup2supelectrochemiluminescencesensorfordetectionofcatechol AT yangxuemei fabricationofcdsrubpysub3subsup2supelectrochemiluminescencesensorfordetectionofcatechol AT yangminli fabricationofcdsrubpysub3subsup2supelectrochemiluminescencesensorfordetectionofcatechol |
| _version_ |
1718431282401116160 |