TNAs/g-C3N4/AuNPs heterojunction used as integrated device of photocatalytic degradation and SERS detection
Novel TiO2 nanotube arrays (TNAs) involved heterojunctions are widely used as photocatalyst for pollutants, while the residues are usually detected by other method. A device which integrates photocatalytic degradation and enhancing detection signals could increase the atom utilization and decrease d...
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| Format: | Article |
| Language: | English |
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Elsevier
2023-03-01
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| Series: | Chemical Engineering Journal Advances |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666821122002009 |
| _version_ | 1797956150495281152 |
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| author | Wei Xue Bo Han Haojie Ma Xueyan Hou Ji-Jiang Wang Ran Li Yuqi Zhang |
| author_facet | Wei Xue Bo Han Haojie Ma Xueyan Hou Ji-Jiang Wang Ran Li Yuqi Zhang |
| author_sort | Wei Xue |
| collection | DOAJ |
| description | Novel TiO2 nanotube arrays (TNAs) involved heterojunctions are widely used as photocatalyst for pollutants, while the residues are usually detected by other method. A device which integrates photocatalytic degradation and enhancing detection signals could increase the atom utilization and decrease detection cost. In this work, a novel TNAs/g-C3N4/AuNPs heterojunction was prepared and used as photocatalyst and SERS substrate simultaneously. Dye of crystal violet was successfully degraded, and the concentration of residue was detected by Raman spectroscopy. There was a good linear correlation between the Raman intensity and the concentration of crystal violet from 10−10 M to 10−6 M, and the limit of detection (LoD) was 8.79 × 10−11 M. Moreover, the prepared heterojunctions were used on wastewater and biological staining detection. In the applications of photocatalytic degradation and detection, the time-dependent SERS intensities demonstrated the photocatalytic degradation achieved more than 95% in 20 min, and almost completed in 25 min, and the heterojunctions showed good recyclability in at least 10 cycles. For SERS property, the original enhancement factor (EF) was calculated to be 7.43 × 106, then the EF descended slightly and remained with less than 90% attenuation after 10 cycles. |
| first_indexed | 2024-04-10T23:45:31Z |
| format | Article |
| id | doaj.art-1b128d4a4dbf42139c6169f80d29be20 |
| institution | Directory Open Access Journal |
| issn | 2666-8211 |
| language | English |
| last_indexed | 2024-04-10T23:45:31Z |
| publishDate | 2023-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Chemical Engineering Journal Advances |
| spelling | doaj.art-1b128d4a4dbf42139c6169f80d29be202023-01-11T04:30:25ZengElsevierChemical Engineering Journal Advances2666-82112023-03-0113100440TNAs/g-C3N4/AuNPs heterojunction used as integrated device of photocatalytic degradation and SERS detectionWei Xue0Bo Han1Haojie Ma2Xueyan Hou3Ji-Jiang Wang4Ran Li5Yuqi Zhang6Yan'an Key Laboratory of Green Chemical Energy, Key Laboratory of New Energy & New Functional Materials, College of Chemistry and Chemical Engineering, Yan'an University, Yan'an, Shaanxi, 716000, P.R. ChinaYan'an Key Laboratory of Green Chemical Energy, Key Laboratory of New Energy & New Functional Materials, College of Chemistry and Chemical Engineering, Yan'an University, Yan'an, Shaanxi, 716000, P.R. ChinaYan'an Key Laboratory of Green Chemical Energy, Key Laboratory of New Energy & New Functional Materials, College of Chemistry and Chemical Engineering, Yan'an University, Yan'an, Shaanxi, 716000, P.R. ChinaYan'an Key Laboratory of Green Chemical Energy, Key Laboratory of New Energy & New Functional Materials, College of Chemistry and Chemical Engineering, Yan'an University, Yan'an, Shaanxi, 716000, P.R. ChinaYan'an Key Laboratory of Green Chemical Energy, Key Laboratory of New Energy & New Functional Materials, College of Chemistry and Chemical Engineering, Yan'an University, Yan'an, Shaanxi, 716000, P.R. ChinaCorresponding authors.; Yan'an Key Laboratory of Green Chemical Energy, Key Laboratory of New Energy & New Functional Materials, College of Chemistry and Chemical Engineering, Yan'an University, Yan'an, Shaanxi, 716000, P.R. ChinaCorresponding authors.; Yan'an Key Laboratory of Green Chemical Energy, Key Laboratory of New Energy & New Functional Materials, College of Chemistry and Chemical Engineering, Yan'an University, Yan'an, Shaanxi, 716000, P.R. ChinaNovel TiO2 nanotube arrays (TNAs) involved heterojunctions are widely used as photocatalyst for pollutants, while the residues are usually detected by other method. A device which integrates photocatalytic degradation and enhancing detection signals could increase the atom utilization and decrease detection cost. In this work, a novel TNAs/g-C3N4/AuNPs heterojunction was prepared and used as photocatalyst and SERS substrate simultaneously. Dye of crystal violet was successfully degraded, and the concentration of residue was detected by Raman spectroscopy. There was a good linear correlation between the Raman intensity and the concentration of crystal violet from 10−10 M to 10−6 M, and the limit of detection (LoD) was 8.79 × 10−11 M. Moreover, the prepared heterojunctions were used on wastewater and biological staining detection. In the applications of photocatalytic degradation and detection, the time-dependent SERS intensities demonstrated the photocatalytic degradation achieved more than 95% in 20 min, and almost completed in 25 min, and the heterojunctions showed good recyclability in at least 10 cycles. For SERS property, the original enhancement factor (EF) was calculated to be 7.43 × 106, then the EF descended slightly and remained with less than 90% attenuation after 10 cycles.http://www.sciencedirect.com/science/article/pii/S2666821122002009TNAs/g-C3N4/AuNPs heterojunctionWastewater detectionBio staining detectionPhotocatalytic and SERS bifunctionRecyclability |
| spellingShingle | Wei Xue Bo Han Haojie Ma Xueyan Hou Ji-Jiang Wang Ran Li Yuqi Zhang TNAs/g-C3N4/AuNPs heterojunction used as integrated device of photocatalytic degradation and SERS detection Chemical Engineering Journal Advances TNAs/g-C3N4/AuNPs heterojunction Wastewater detection Bio staining detection Photocatalytic and SERS bifunction Recyclability |
| title | TNAs/g-C3N4/AuNPs heterojunction used as integrated device of photocatalytic degradation and SERS detection |
| title_full | TNAs/g-C3N4/AuNPs heterojunction used as integrated device of photocatalytic degradation and SERS detection |
| title_fullStr | TNAs/g-C3N4/AuNPs heterojunction used as integrated device of photocatalytic degradation and SERS detection |
| title_full_unstemmed | TNAs/g-C3N4/AuNPs heterojunction used as integrated device of photocatalytic degradation and SERS detection |
| title_short | TNAs/g-C3N4/AuNPs heterojunction used as integrated device of photocatalytic degradation and SERS detection |
| title_sort | tnas g c3n4 aunps heterojunction used as integrated device of photocatalytic degradation and sers detection |
| topic | TNAs/g-C3N4/AuNPs heterojunction Wastewater detection Bio staining detection Photocatalytic and SERS bifunction Recyclability |
| url | http://www.sciencedirect.com/science/article/pii/S2666821122002009 |
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