A Kinetic Study of Photocatalytic Degradation of Phenol over Titania–Silica Mixed Oxide Materials under UV Illumination
A set of titania–silica mixed oxide materials were prepared by a cosolvent-induced gelation method using ethanol and toluene as solvent and cosolvent, respectively. These materials were extensively characterized by utilizing several characterization techniques and assessed for phenol degradation und...
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MDPI AG
2022-02-01
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| Series: | Catalysts |
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| Online Access: | https://www.mdpi.com/2073-4344/12/2/193 |
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| author | Shivatharsiny Yohi Chia-Ming Wu Ranjit T. Koodali |
| author_facet | Shivatharsiny Yohi Chia-Ming Wu Ranjit T. Koodali |
| author_sort | Shivatharsiny Yohi |
| collection | DOAJ |
| description | A set of titania–silica mixed oxide materials were prepared by a cosolvent-induced gelation method using ethanol and toluene as solvent and cosolvent, respectively. These materials were extensively characterized by utilizing several characterization techniques and assessed for phenol degradation under UV illumination. The degradation of phenol follows first-order kinetics, and fragmented products formed during the phenol degradation were qualitatively identified by using high performance liquid Chromatographic (HPLC) and atomic pressure chemical ionization mass spectroscopic (APCI-MS) techniques. The complete mineralization of phenol was further evidenced by the measurement of the total organic contents that remained in the solution after irradiation. The pore diameter of the materials was found to be the key factor for phenol degradation, whereas surface area and pore volume play a role among the mixed oxide materials. In addition, in the mixed oxide system there was an inverse correlation obtained with the particle size of the materials and the degradation efficiency. The smaller particle size of titania in the mixed oxide material was found to be a requirement for an effective degradation of phenol. |
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| issn | 2073-4344 |
| language | English |
| last_indexed | 2024-03-09T22:22:15Z |
| publishDate | 2022-02-01 |
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| spelling | doaj.art-7c02d4347bb94c0eb1f92f33b6dad88a2023-11-23T19:12:47ZengMDPI AGCatalysts2073-43442022-02-0112219310.3390/catal12020193A Kinetic Study of Photocatalytic Degradation of Phenol over Titania–Silica Mixed Oxide Materials under UV IlluminationShivatharsiny Yohi0Chia-Ming Wu1Ranjit T. Koodali2Department of Chemistry, University of Jaffna, Jaffna 40000, Sri LankaDepartment of Chemistry, University of South Dakota, Vermillion, SD 57069, USADepartment of Chemistry, Western Kentucky University, Bowling Green, KY 42101, USAA set of titania–silica mixed oxide materials were prepared by a cosolvent-induced gelation method using ethanol and toluene as solvent and cosolvent, respectively. These materials were extensively characterized by utilizing several characterization techniques and assessed for phenol degradation under UV illumination. The degradation of phenol follows first-order kinetics, and fragmented products formed during the phenol degradation were qualitatively identified by using high performance liquid Chromatographic (HPLC) and atomic pressure chemical ionization mass spectroscopic (APCI-MS) techniques. The complete mineralization of phenol was further evidenced by the measurement of the total organic contents that remained in the solution after irradiation. The pore diameter of the materials was found to be the key factor for phenol degradation, whereas surface area and pore volume play a role among the mixed oxide materials. In addition, in the mixed oxide system there was an inverse correlation obtained with the particle size of the materials and the degradation efficiency. The smaller particle size of titania in the mixed oxide material was found to be a requirement for an effective degradation of phenol.https://www.mdpi.com/2073-4344/12/2/193titania–silicaPhenolOH radicalHPLCAPCI-mass spectroscopy |
| spellingShingle | Shivatharsiny Yohi Chia-Ming Wu Ranjit T. Koodali A Kinetic Study of Photocatalytic Degradation of Phenol over Titania–Silica Mixed Oxide Materials under UV Illumination Catalysts titania–silica Phenol OH radical HPLC APCI-mass spectroscopy |
| title | A Kinetic Study of Photocatalytic Degradation of Phenol over Titania–Silica Mixed Oxide Materials under UV Illumination |
| title_full | A Kinetic Study of Photocatalytic Degradation of Phenol over Titania–Silica Mixed Oxide Materials under UV Illumination |
| title_fullStr | A Kinetic Study of Photocatalytic Degradation of Phenol over Titania–Silica Mixed Oxide Materials under UV Illumination |
| title_full_unstemmed | A Kinetic Study of Photocatalytic Degradation of Phenol over Titania–Silica Mixed Oxide Materials under UV Illumination |
| title_short | A Kinetic Study of Photocatalytic Degradation of Phenol over Titania–Silica Mixed Oxide Materials under UV Illumination |
| title_sort | kinetic study of photocatalytic degradation of phenol over titania silica mixed oxide materials under uv illumination |
| topic | titania–silica Phenol OH radical HPLC APCI-mass spectroscopy |
| url | https://www.mdpi.com/2073-4344/12/2/193 |
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