Effects of electronic structure and interfacial interaction between metal-quinoline complexes and TiO 2 on visible light photocatalytic activity of TiO 2
Two metal-quinoline complexes, Fe(III)-8-hydroxyquinoline-5-sulfonic acid (Fe-HQS) and Er(III)-8-hydroxyquinoline-5-sulfonic acid (Er-HQS), were used as sensitizers of TiO 2 for improving visible light photocatalytic activity of TiO 2 . UV-vis spectra, X-ray Diffraction, X-ray Photoelectron Spectro...
| Main Authors: | , , , , , , |
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| Format: | Journal article |
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Elsevier
2016
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| _version_ | 1797073085560520704 |
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| author | Huang, Y Shang, Q Wang, D Yang, S Guan, H Lu, Q Tsang, S |
| author_facet | Huang, Y Shang, Q Wang, D Yang, S Guan, H Lu, Q Tsang, S |
| author_sort | Huang, Y |
| collection | OXFORD |
| description | Two metal-quinoline complexes, Fe(III)-8-hydroxyquinoline-5-sulfonic acid (Fe-HQS) and Er(III)-8-hydroxyquinoline-5-sulfonic acid (Er-HQS), were used as sensitizers of TiO 2 for improving visible light photocatalytic activity of TiO 2 . UV-vis spectra, X-ray Diffraction, X-ray Photoelectron Spectroscopy, Scanning Electron Microscope and Transmission Electron Microscope were put to use to characterize the structure and morphology of Fe-HQS-TiO 2 and Er-HQS-TiO 2 . The effects of interfacial electron transfer and energy level matching between each complex and TiO 2 were researched intensively. Er-HQS-TiO 2 and Fe-HQS-TiO 2 exhibited enhanced photocatalytic activity on photodecomposition of phenol in aqueous solution under visible light irradiation comparing to that of pure TiO 2 . According to photoelectrochemical response property and theoretical calculation of energy levels, two possible energy matching modes and photoelectron transmission pathways were proposed to explain the effects of Fe-HQS and Er-HQS on the interfacial interaction between metal-HQS complex and TiO 2 , and their different photocatalytic activities under visible light irradiation. The work in this paper indicated that metal-HQS complex with appropriate electronic structure and HOMO-LUMO energy levels relative to the band gap of TiO 2 played a major role in improving TiO 2 photocatalytic activity. |
| first_indexed | 2024-03-06T23:16:56Z |
| format | Journal article |
| id | oxford-uuid:6773f5d4-cebf-4026-a333-0ba841be43f6 |
| institution | University of Oxford |
| last_indexed | 2024-03-06T23:16:56Z |
| publishDate | 2016 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | oxford-uuid:6773f5d4-cebf-4026-a333-0ba841be43f62022-03-26T18:38:26ZEffects of electronic structure and interfacial interaction between metal-quinoline complexes and TiO 2 on visible light photocatalytic activity of TiO 2Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:6773f5d4-cebf-4026-a333-0ba841be43f6Symplectic Elements at OxfordElsevier2016Huang, YShang, QWang, DYang, SGuan, HLu, QTsang, STwo metal-quinoline complexes, Fe(III)-8-hydroxyquinoline-5-sulfonic acid (Fe-HQS) and Er(III)-8-hydroxyquinoline-5-sulfonic acid (Er-HQS), were used as sensitizers of TiO 2 for improving visible light photocatalytic activity of TiO 2 . UV-vis spectra, X-ray Diffraction, X-ray Photoelectron Spectroscopy, Scanning Electron Microscope and Transmission Electron Microscope were put to use to characterize the structure and morphology of Fe-HQS-TiO 2 and Er-HQS-TiO 2 . The effects of interfacial electron transfer and energy level matching between each complex and TiO 2 were researched intensively. Er-HQS-TiO 2 and Fe-HQS-TiO 2 exhibited enhanced photocatalytic activity on photodecomposition of phenol in aqueous solution under visible light irradiation comparing to that of pure TiO 2 . According to photoelectrochemical response property and theoretical calculation of energy levels, two possible energy matching modes and photoelectron transmission pathways were proposed to explain the effects of Fe-HQS and Er-HQS on the interfacial interaction between metal-HQS complex and TiO 2 , and their different photocatalytic activities under visible light irradiation. The work in this paper indicated that metal-HQS complex with appropriate electronic structure and HOMO-LUMO energy levels relative to the band gap of TiO 2 played a major role in improving TiO 2 photocatalytic activity. |
| spellingShingle | Huang, Y Shang, Q Wang, D Yang, S Guan, H Lu, Q Tsang, S Effects of electronic structure and interfacial interaction between metal-quinoline complexes and TiO 2 on visible light photocatalytic activity of TiO 2 |
| title | Effects of electronic structure and interfacial interaction between metal-quinoline complexes and TiO 2 on visible light photocatalytic activity of TiO 2 |
| title_full | Effects of electronic structure and interfacial interaction between metal-quinoline complexes and TiO 2 on visible light photocatalytic activity of TiO 2 |
| title_fullStr | Effects of electronic structure and interfacial interaction between metal-quinoline complexes and TiO 2 on visible light photocatalytic activity of TiO 2 |
| title_full_unstemmed | Effects of electronic structure and interfacial interaction between metal-quinoline complexes and TiO 2 on visible light photocatalytic activity of TiO 2 |
| title_short | Effects of electronic structure and interfacial interaction between metal-quinoline complexes and TiO 2 on visible light photocatalytic activity of TiO 2 |
| title_sort | effects of electronic structure and interfacial interaction between metal quinoline complexes and tio 2 on visible light photocatalytic activity of tio 2 |
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