Iron Modified Titanate Nanotube Arrays for Photoelectrochemical Removal of <i>E. coli</i>
This study used iron modified titanate nanotube arrays (Fe/TNAs) to remove <i>E. coli</i> in a photoelectrochemical system. The Fe/TNAs was synthesized by the anodization method and followed by the square wave voltammetry electrochemical deposition (SWVE) method with ferric nitrate as th...
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MDPI AG
2021-07-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/11/8/1944 |
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| author | Chia-Hung Chen Yen-Ping Peng Ming-Hsun Lin Ken-Lin Chang Yung-Chang Lin Jian Sun |
| author_facet | Chia-Hung Chen Yen-Ping Peng Ming-Hsun Lin Ken-Lin Chang Yung-Chang Lin Jian Sun |
| author_sort | Chia-Hung Chen |
| collection | DOAJ |
| description | This study used iron modified titanate nanotube arrays (Fe/TNAs) to remove <i>E. coli</i> in a photoelectrochemical system. The Fe/TNAs was synthesized by the anodization method and followed by the square wave voltammetry electrochemical deposition (SWVE) method with ferric nitrate as the precursor. Fe/TNAs were characterized by SEM, XRD, XPS, and UV-vis DRS to investigate the surface properties and light absorption. As a result, the iron nanoparticles (NPs) were successfully deposited on the tubular structure of the TNAs, which showed the best light utilization. Moreover, the photoelectrochemical (PEC) properties of the Fe/TNAs were measured by current-light response and electrochemical impedance spectroscopy. The photocurrent of the Fe/TNAs-0.5 (3.5 mA/cm<sup>2</sup>) was higher than TNAs (2.0 mA/cm<sup>2</sup>) and electron lifetime of Fe/TNAs-0.5 (433.3 ms) were also longer than TNAs (290.3 ms). Compared to the photolytic (P), photocatalytic (PC), and electrochemical (EC) method, Fe/TNAs PEC showed the best removal efficiency for methyl orange degradation. Furthermore, the Fe/TNAs PEC system also performed better removal efficiency than that of photolysis method in <i>E. coli</i> degradation experiments. |
| first_indexed | 2024-03-10T08:32:43Z |
| format | Article |
| id | doaj.art-e5927a204ca34299b9bbf1af84a04bb6 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-10T08:32:43Z |
| publishDate | 2021-07-01 |
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| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-e5927a204ca34299b9bbf1af84a04bb62023-11-22T08:58:12ZengMDPI AGNanomaterials2079-49912021-07-01118194410.3390/nano11081944Iron Modified Titanate Nanotube Arrays for Photoelectrochemical Removal of <i>E. coli</i>Chia-Hung Chen0Yen-Ping Peng1Ming-Hsun Lin2Ken-Lin Chang3Yung-Chang Lin4Jian Sun5Institute of Environment Engineering, National Sun Yat-sen University, Kaohsiung 804, TaiwanInstitute of Environment Engineering, National Sun Yat-sen University, Kaohsiung 804, TaiwanDepartment of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung 811, TaiwanInstitute of Environment Engineering, National Sun Yat-sen University, Kaohsiung 804, TaiwanCenter for Environmental Toxin and Emerging-Contaminant Research, Cheng Shiu University, Kaoshiung 804, TaiwanSchool of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, ChinaThis study used iron modified titanate nanotube arrays (Fe/TNAs) to remove <i>E. coli</i> in a photoelectrochemical system. The Fe/TNAs was synthesized by the anodization method and followed by the square wave voltammetry electrochemical deposition (SWVE) method with ferric nitrate as the precursor. Fe/TNAs were characterized by SEM, XRD, XPS, and UV-vis DRS to investigate the surface properties and light absorption. As a result, the iron nanoparticles (NPs) were successfully deposited on the tubular structure of the TNAs, which showed the best light utilization. Moreover, the photoelectrochemical (PEC) properties of the Fe/TNAs were measured by current-light response and electrochemical impedance spectroscopy. The photocurrent of the Fe/TNAs-0.5 (3.5 mA/cm<sup>2</sup>) was higher than TNAs (2.0 mA/cm<sup>2</sup>) and electron lifetime of Fe/TNAs-0.5 (433.3 ms) were also longer than TNAs (290.3 ms). Compared to the photolytic (P), photocatalytic (PC), and electrochemical (EC) method, Fe/TNAs PEC showed the best removal efficiency for methyl orange degradation. Furthermore, the Fe/TNAs PEC system also performed better removal efficiency than that of photolysis method in <i>E. coli</i> degradation experiments.https://www.mdpi.com/2079-4991/11/8/1944titanate nanotube arraysantibacterial<i>E. coli</i>photoelectrochemical |
| spellingShingle | Chia-Hung Chen Yen-Ping Peng Ming-Hsun Lin Ken-Lin Chang Yung-Chang Lin Jian Sun Iron Modified Titanate Nanotube Arrays for Photoelectrochemical Removal of <i>E. coli</i> Nanomaterials titanate nanotube arrays antibacterial <i>E. coli</i> photoelectrochemical |
| title | Iron Modified Titanate Nanotube Arrays for Photoelectrochemical Removal of <i>E. coli</i> |
| title_full | Iron Modified Titanate Nanotube Arrays for Photoelectrochemical Removal of <i>E. coli</i> |
| title_fullStr | Iron Modified Titanate Nanotube Arrays for Photoelectrochemical Removal of <i>E. coli</i> |
| title_full_unstemmed | Iron Modified Titanate Nanotube Arrays for Photoelectrochemical Removal of <i>E. coli</i> |
| title_short | Iron Modified Titanate Nanotube Arrays for Photoelectrochemical Removal of <i>E. coli</i> |
| title_sort | iron modified titanate nanotube arrays for photoelectrochemical removal of i e coli i |
| topic | titanate nanotube arrays antibacterial <i>E. coli</i> photoelectrochemical |
| url | https://www.mdpi.com/2079-4991/11/8/1944 |
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