Polydopamine-assisted decoration of TiO2 nanotube arrays with enzyme to construct a novel photoelectrochemical sensing platform
A novel photoelectrochemical (PEC) bios ensing platform coupling with enzyme-induced biocatalytic precipitation (BCP) for H 2 O 2 was successfully constructed. TiO 2 nanotube arrays (TNs) were coated with polydopamine (PDA) and horseradish peroxidase (HRP) as the PEC electrode through a facile met...
| Main Authors: | , , , , , , |
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| Format: | Journal Article |
| Published: |
Elsevier
2018
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| Online Access: | http://hdl.handle.net/20.500.11937/56867 |
| _version_ | 1848759956942094336 |
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| author | Li, J. Li, X. Zhao, Q. Jiang, Z. Tade, Moses Wang, S. Liu, Shaomin |
| author_facet | Li, J. Li, X. Zhao, Q. Jiang, Z. Tade, Moses Wang, S. Liu, Shaomin |
| author_sort | Li, J. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | A novel photoelectrochemical (PEC) bios ensing platform coupling with enzyme-induced biocatalytic precipitation (BCP) for H 2 O 2 was successfully constructed. TiO 2 nanotube arrays (TNs) were coated with polydopamine (PDA) and horseradish peroxidase (HRP) as the PEC electrode through a facile method. PDA was incorporated into the sensor system not only as a sensitizing agent to alter the optical properties of TiO 2 nanotube arrays and enhance the visible light (? > 400 nm) absorption, but also as a bonding resin to HRP via Michael addition or Schiff base reaction. The immobilized HRP on the PEC electrodes could induce BCP reaction as the signal amplifier by oxidizing the 4-chloro-1-naphthol (4-CN) into insoluble products in the presence of H 2 O 2 . The quantitative monitoring of H 2 O 2 could be realized thanks to the photocurrent decrease caused by the BCP generated insoluble products deposited on the PEC electrode surface. The fabricated TNs@HRP/PDA PEC electrode for biosensing of H 2 O 2 exhibited a good sensitivity as well as selectivity in a detection range from 1 nM to 50 µM, with a detection limit of 0.7 nM. |
| first_indexed | 2025-11-14T10:08:08Z |
| format | Journal Article |
| id | curtin-20.500.11937-56867 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T10:08:08Z |
| publishDate | 2018 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-568672018-01-17T04:58:54Z Polydopamine-assisted decoration of TiO2 nanotube arrays with enzyme to construct a novel photoelectrochemical sensing platform Li, J. Li, X. Zhao, Q. Jiang, Z. Tade, Moses Wang, S. Liu, Shaomin A novel photoelectrochemical (PEC) bios ensing platform coupling with enzyme-induced biocatalytic precipitation (BCP) for H 2 O 2 was successfully constructed. TiO 2 nanotube arrays (TNs) were coated with polydopamine (PDA) and horseradish peroxidase (HRP) as the PEC electrode through a facile method. PDA was incorporated into the sensor system not only as a sensitizing agent to alter the optical properties of TiO 2 nanotube arrays and enhance the visible light (? > 400 nm) absorption, but also as a bonding resin to HRP via Michael addition or Schiff base reaction. The immobilized HRP on the PEC electrodes could induce BCP reaction as the signal amplifier by oxidizing the 4-chloro-1-naphthol (4-CN) into insoluble products in the presence of H 2 O 2 . The quantitative monitoring of H 2 O 2 could be realized thanks to the photocurrent decrease caused by the BCP generated insoluble products deposited on the PEC electrode surface. The fabricated TNs@HRP/PDA PEC electrode for biosensing of H 2 O 2 exhibited a good sensitivity as well as selectivity in a detection range from 1 nM to 50 µM, with a detection limit of 0.7 nM. 2018 Journal Article http://hdl.handle.net/20.500.11937/56867 10.1016/j.snb.2017.06.168 Elsevier restricted |
| spellingShingle | Li, J. Li, X. Zhao, Q. Jiang, Z. Tade, Moses Wang, S. Liu, Shaomin Polydopamine-assisted decoration of TiO2 nanotube arrays with enzyme to construct a novel photoelectrochemical sensing platform |
| title | Polydopamine-assisted decoration of TiO2 nanotube arrays with enzyme to construct a novel photoelectrochemical sensing platform |
| title_full | Polydopamine-assisted decoration of TiO2 nanotube arrays with enzyme to construct a novel photoelectrochemical sensing platform |
| title_fullStr | Polydopamine-assisted decoration of TiO2 nanotube arrays with enzyme to construct a novel photoelectrochemical sensing platform |
| title_full_unstemmed | Polydopamine-assisted decoration of TiO2 nanotube arrays with enzyme to construct a novel photoelectrochemical sensing platform |
| title_short | Polydopamine-assisted decoration of TiO2 nanotube arrays with enzyme to construct a novel photoelectrochemical sensing platform |
| title_sort | polydopamine-assisted decoration of tio2 nanotube arrays with enzyme to construct a novel photoelectrochemical sensing platform |
| url | http://hdl.handle.net/20.500.11937/56867 |