Synthesis, Characterization and Sonocatalytic Activity of Co/N/Er<sup>3+</sup> : Y<sub>3</sub>Al<sub>5</sub>O<sub>12</sub> /TiO2 Film for the Degradation of Organic Dyes
The sonocatalytic degradation of organic dyes (C.I. 50040, C.I. Reactive Red 1, C.I. Acid Orange 7) catalysed by Co/N/Er<sup>3+</sup> : Y<sub>3</sub>Al<sub>5</sub>O<sub>12</sub>/TiO<sub>2</sub> films was studied. For the preparation of Co/N...
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| Format: | Article |
| Language: | English |
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Croatian Society of Chemical Engineers
2015-07-01
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| Series: | Kemija u Industriji |
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| Online Access: | http://pierre.fkit.hr/hdki/kui/vol64/broj7-8/339.pdf |
| _version_ | 1818546146489925632 |
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| author | Wang L. Ren J.-L. Hao C.-S. |
| author_facet | Wang L. Ren J.-L. Hao C.-S. |
| author_sort | Wang L. |
| collection | DOAJ |
| description | The sonocatalytic degradation of organic dyes (C.I. 50040, C.I. Reactive Red 1, C.I. Acid Orange 7) catalysed by Co/N/Er<sup>3+</sup> : Y<sub>3</sub>Al<sub>5</sub>O<sub>12</sub>/TiO<sub>2</sub> films was studied. For the preparation of Co/N/Er<sup>3+</sup> : Y<sub>3</sub>Al<sub>5</sub>O<sub>12</sub>/TiO<sub>2</sub> films, the sol-gel coating process was used. The phase composition, morphology, precursor at different temperatures and emitting light properties of the calcined powders were analysed by X-ray diffraction (XRD), absorption spectra and upconversion emission spectra. The X-ray diffraction of powder samples of Co/N/Er<sup>3+</sup> : Y<sub>3</sub>Al<sub>5</sub>O<sub>12</sub>/TiO<sub>2</sub> took on anatase mine peaks and upconversion luminous agent, respectively. Analysis of absorption spectra of amorphous Co/N/Er<sup>3</sup>+ : Y<sub>3</sub>Al<sub>5</sub>O<sub>12</sub>/TiO<sub>2</sub> showed that doping N stretching vibration peak of water or hydroxyl adsorption, Co<sup>2+</sup> ion had very strong absorption in 1.0–1.7 μm wavelength range, the transition luminescence of Er<sup>3+</sup> ions was just on Co<sup>2+</sup> ions absorption band. The emission spectrum indicated that Co/N/Er<sup>3+</sup> : Y<sub>3</sub>Al<sub>5</sub>O<sub>12</sub>/TiO<sub>2</sub> could launch green 500–560 nm and red 650–700 nm, 525, 550 and 660 nm peaks corresponding to 2H11/2, 4S3/2 → 4I15/2 and 4H9/2 → 4I15/2 transition of Er<sup>3+</sup>. Doping Co and N enhanced the upconversion luminescence and absorption effect. Sonocatalytic degradation effect of organic dyes loading Co/N/Er<sup>3+</sup> : Y<sub>3</sub>Al<sub>5</sub>O<sub>12</sub>/TiO<sub>2</sub> was better when ultrasonic intensity was equal to 15 W cm<sup>–2</sup>. The degradation ratios of aqueous solutions of these three kinds of organic dyes by ultrasonic irradiation were obviously lower than by ultrasonic irradiation together with Co/N/Er<sup>3+</sup> : Y<sub>3</sub>Al<sub>5</sub>O<sub>12</sub>/TiO<sub>2</sub> films in the same conditions. Degradation kinetics of organic dyes by ultrasonic irradiation and by ultrasonic irradiation cooperating with Co/N/Er<sup>3+</sup> : Y<sub>3</sub>Al<sub>5</sub>O<sub>12</sub>/TiO<sub>2</sub> films followed the first-order reaction. |
| first_indexed | 2024-12-12T07:49:14Z |
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| publishDate | 2015-07-01 |
| publisher | Croatian Society of Chemical Engineers |
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| series | Kemija u Industriji |
| spelling | doaj.art-0dd1bf5fb7324533895dbb68850fc36e2022-12-22T00:32:29ZengCroatian Society of Chemical EngineersKemija u Industriji0022-98301334-90902015-07-01647-833934510.15255/KUI.2015.007Synthesis, Characterization and Sonocatalytic Activity of Co/N/Er<sup>3+</sup> : Y<sub>3</sub>Al<sub>5</sub>O<sub>12</sub> /TiO2 Film for the Degradation of Organic DyesWang L. 0Ren J.-L.1Hao C.-S. 2Shijiazhuang Tiedao University, Shijiazhuang, 050 043 Hebei, P.R. ChinaShijiazhuang Tiedao University, Shijiazhuang, 050 043 Hebei, P.R. ChinaShijiazhuang Tiedao University, Shijiazhuang, 050 043 Hebei, P.R. ChinaThe sonocatalytic degradation of organic dyes (C.I. 50040, C.I. Reactive Red 1, C.I. Acid Orange 7) catalysed by Co/N/Er<sup>3+</sup> : Y<sub>3</sub>Al<sub>5</sub>O<sub>12</sub>/TiO<sub>2</sub> films was studied. For the preparation of Co/N/Er<sup>3+</sup> : Y<sub>3</sub>Al<sub>5</sub>O<sub>12</sub>/TiO<sub>2</sub> films, the sol-gel coating process was used. The phase composition, morphology, precursor at different temperatures and emitting light properties of the calcined powders were analysed by X-ray diffraction (XRD), absorption spectra and upconversion emission spectra. The X-ray diffraction of powder samples of Co/N/Er<sup>3+</sup> : Y<sub>3</sub>Al<sub>5</sub>O<sub>12</sub>/TiO<sub>2</sub> took on anatase mine peaks and upconversion luminous agent, respectively. Analysis of absorption spectra of amorphous Co/N/Er<sup>3</sup>+ : Y<sub>3</sub>Al<sub>5</sub>O<sub>12</sub>/TiO<sub>2</sub> showed that doping N stretching vibration peak of water or hydroxyl adsorption, Co<sup>2+</sup> ion had very strong absorption in 1.0–1.7 μm wavelength range, the transition luminescence of Er<sup>3+</sup> ions was just on Co<sup>2+</sup> ions absorption band. The emission spectrum indicated that Co/N/Er<sup>3+</sup> : Y<sub>3</sub>Al<sub>5</sub>O<sub>12</sub>/TiO<sub>2</sub> could launch green 500–560 nm and red 650–700 nm, 525, 550 and 660 nm peaks corresponding to 2H11/2, 4S3/2 → 4I15/2 and 4H9/2 → 4I15/2 transition of Er<sup>3+</sup>. Doping Co and N enhanced the upconversion luminescence and absorption effect. Sonocatalytic degradation effect of organic dyes loading Co/N/Er<sup>3+</sup> : Y<sub>3</sub>Al<sub>5</sub>O<sub>12</sub>/TiO<sub>2</sub> was better when ultrasonic intensity was equal to 15 W cm<sup>–2</sup>. The degradation ratios of aqueous solutions of these three kinds of organic dyes by ultrasonic irradiation were obviously lower than by ultrasonic irradiation together with Co/N/Er<sup>3+</sup> : Y<sub>3</sub>Al<sub>5</sub>O<sub>12</sub>/TiO<sub>2</sub> films in the same conditions. Degradation kinetics of organic dyes by ultrasonic irradiation and by ultrasonic irradiation cooperating with Co/N/Er<sup>3+</sup> : Y<sub>3</sub>Al<sub>5</sub>O<sub>12</sub>/TiO<sub>2</sub> films followed the first-order reaction.http://pierre.fkit.hr/hdki/kui/vol64/broj7-8/339.pdfCo/N/Er<sup>3+</sup> : Y<sub>3</sub>Al<sub>5</sub>O<sub>12</sub>/TiO<sub>2</sub>upconversion emission spectrasonocatalyticdye degradation |
| spellingShingle | Wang L. Ren J.-L. Hao C.-S. Synthesis, Characterization and Sonocatalytic Activity of Co/N/Er<sup>3+</sup> : Y<sub>3</sub>Al<sub>5</sub>O<sub>12</sub> /TiO2 Film for the Degradation of Organic Dyes Kemija u Industriji Co/N/Er<sup>3+</sup> : Y<sub>3</sub>Al<sub>5</sub>O<sub>12</sub>/TiO<sub>2</sub> upconversion emission spectra sonocatalytic dye degradation |
| title | Synthesis, Characterization and Sonocatalytic Activity of Co/N/Er<sup>3+</sup> : Y<sub>3</sub>Al<sub>5</sub>O<sub>12</sub> /TiO2 Film for the Degradation of Organic Dyes |
| title_full | Synthesis, Characterization and Sonocatalytic Activity of Co/N/Er<sup>3+</sup> : Y<sub>3</sub>Al<sub>5</sub>O<sub>12</sub> /TiO2 Film for the Degradation of Organic Dyes |
| title_fullStr | Synthesis, Characterization and Sonocatalytic Activity of Co/N/Er<sup>3+</sup> : Y<sub>3</sub>Al<sub>5</sub>O<sub>12</sub> /TiO2 Film for the Degradation of Organic Dyes |
| title_full_unstemmed | Synthesis, Characterization and Sonocatalytic Activity of Co/N/Er<sup>3+</sup> : Y<sub>3</sub>Al<sub>5</sub>O<sub>12</sub> /TiO2 Film for the Degradation of Organic Dyes |
| title_short | Synthesis, Characterization and Sonocatalytic Activity of Co/N/Er<sup>3+</sup> : Y<sub>3</sub>Al<sub>5</sub>O<sub>12</sub> /TiO2 Film for the Degradation of Organic Dyes |
| title_sort | synthesis characterization and sonocatalytic activity of co n er sup 3 sup y sub 3 sub al sub 5 sub o sub 12 sub tio2 film for the degradation of organic dyes |
| topic | Co/N/Er<sup>3+</sup> : Y<sub>3</sub>Al<sub>5</sub>O<sub>12</sub>/TiO<sub>2</sub> upconversion emission spectra sonocatalytic dye degradation |
| url | http://pierre.fkit.hr/hdki/kui/vol64/broj7-8/339.pdf |
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