Comparison of Photocatalytic Activity: Impact of Hydrophilic Properties on TiO<sub>2</sub> and ZrO<sub>2</sub> Thin Films
Thin films (TFs) of TiO<sub>2</sub> and ZrO<sub>2</sub> were prepared and characterized to evaluate their structural and optical (SO) properties and, later, to test their efficiency for the photocatalytic degradation (PD) of methylene blue (MB) in aqueous solution. The X-ray...
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2024-12-01
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| Series: | Inorganics |
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| Online Access: | https://www.mdpi.com/2304-6740/12/12/320 |
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| author | Yuliana de Jesús Acosta-Silva Misael Ian Lugo-Arredondo Salvador Gallardo-Hernández Juan Fernando Garcia-Trejo Yasuhiro Matsumoto Sandra Rivas Ana Angélica Feregrino-Pérez Luis A. Godínez Arturo Méndez-López |
| author_facet | Yuliana de Jesús Acosta-Silva Misael Ian Lugo-Arredondo Salvador Gallardo-Hernández Juan Fernando Garcia-Trejo Yasuhiro Matsumoto Sandra Rivas Ana Angélica Feregrino-Pérez Luis A. Godínez Arturo Méndez-López |
| author_sort | Yuliana de Jesús Acosta-Silva |
| collection | DOAJ |
| description | Thin films (TFs) of TiO<sub>2</sub> and ZrO<sub>2</sub> were prepared and characterized to evaluate their structural and optical (SO) properties and, later, to test their efficiency for the photocatalytic degradation (PD) of methylene blue (MB) in aqueous solution. The X-ray diffraction patterns showed that the TiO<sub>2</sub> TFs had an anatase crystalline structure, unlike the ZrO<sub>2</sub> TFs, which showed a tetragonal crystalline structure that was verified by Raman spectroscopy. The band gap (BG) energies, as calculated from UV-Vis spectroscopy and diffuse reflectance spectroscopy, corresponded to 3.2 and 3.7 eV for the TiO<sub>2</sub> and ZrO<sub>2</sub> TFs, respectively. SEM examination of the obtained materials was also carried out to assess the surface morphology and topography. The comparative study of the FTIR spectra of the TiO<sub>2</sub> and ZrO<sub>2</sub> TFs successfully confirmed the composition of the two-metal oxide TFs. The electrical properties of the films were studied by conductivity measurements. The two films also showed a similar thickness of about 200 nm and a substantially different photocatalytic performance for the discoloration of MB in aqueous solution. The corresponding rate constants, as obtained from a pseudo-first-order kinetic model, revealed that TiO<sub>2</sub> films promote color removal of the model dye solution almost 20 times faster than the rate observed for ZrO<sub>2</sub> modified glass substrates. We suggest that this difference may be related to the hydrophilic character of the two films under study, which may affect the charge carrier injection process and, therefore, the overall photocatalytic performance. |
| format | Article |
| id | doaj-art-2c091292aad54de7820dd616ecd8e70d |
| institution | Kabale University |
| issn | 2304-6740 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | MDPI AG |
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| series | Inorganics |
| spelling | doaj-art-2c091292aad54de7820dd616ecd8e70d2024-12-27T14:31:05ZengMDPI AGInorganics2304-67402024-12-01121232010.3390/inorganics12120320Comparison of Photocatalytic Activity: Impact of Hydrophilic Properties on TiO<sub>2</sub> and ZrO<sub>2</sub> Thin FilmsYuliana de Jesús Acosta-Silva0Misael Ian Lugo-Arredondo1Salvador Gallardo-Hernández2Juan Fernando Garcia-Trejo3Yasuhiro Matsumoto4Sandra Rivas5Ana Angélica Feregrino-Pérez6Luis A. Godínez7Arturo Méndez-López8Cuerpo Académico de Nanotecnología y su Aplicación, Facultad de Ingeniería, Universidad Autónoma de Querétaro, Centro Universitario, Santiago de Querétaro 76010, QRO, MexicoFacultad de Ingeniería, Universidad Autónoma de Querétaro, Centro Universitario, Santiago de Querétaro 76010, QRO, MexicoDepartamento de Física, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Av. IPN 2508, Ciudad de México 07360, MexicoCuerpo Académico de Bioingeniería Básica y Aplicada, Facultad de Ingeniería, Universidad Autónoma de Querétaro, Cerro de las Campanas s/n, Las Campanas, Querétaro 76010, MexicoDepartamento de Ingeniería Eléctrica (SEES), CINVESTAV-IPN, Avenida IPN No 2508, Mexico City 07360, MexicoCuerpo Académico de Nanotecnología y su Aplicación, Facultad de Ingeniería, Universidad Autónoma de Querétaro, Centro Universitario, Santiago de Querétaro 76010, QRO, MexicoCuerpo Académico de Bioingeniería Básica y Aplicada, Facultad de Ingeniería, Universidad Autónoma de Querétaro, Cerro de las Campanas s/n, Las Campanas, Querétaro 76010, MexicoCentro de Investigación en Química para la Economía Circular, CIQEC, Facultad de Química, Universidad Autónoma de Querétaro, Centro Universitario, Querétaro 76010, MexicoCuerpo Académico de Nanotecnología y su Aplicación, Facultad de Ingeniería, Universidad Autónoma de Querétaro, Centro Universitario, Santiago de Querétaro 76010, QRO, MexicoThin films (TFs) of TiO<sub>2</sub> and ZrO<sub>2</sub> were prepared and characterized to evaluate their structural and optical (SO) properties and, later, to test their efficiency for the photocatalytic degradation (PD) of methylene blue (MB) in aqueous solution. The X-ray diffraction patterns showed that the TiO<sub>2</sub> TFs had an anatase crystalline structure, unlike the ZrO<sub>2</sub> TFs, which showed a tetragonal crystalline structure that was verified by Raman spectroscopy. The band gap (BG) energies, as calculated from UV-Vis spectroscopy and diffuse reflectance spectroscopy, corresponded to 3.2 and 3.7 eV for the TiO<sub>2</sub> and ZrO<sub>2</sub> TFs, respectively. SEM examination of the obtained materials was also carried out to assess the surface morphology and topography. The comparative study of the FTIR spectra of the TiO<sub>2</sub> and ZrO<sub>2</sub> TFs successfully confirmed the composition of the two-metal oxide TFs. The electrical properties of the films were studied by conductivity measurements. The two films also showed a similar thickness of about 200 nm and a substantially different photocatalytic performance for the discoloration of MB in aqueous solution. The corresponding rate constants, as obtained from a pseudo-first-order kinetic model, revealed that TiO<sub>2</sub> films promote color removal of the model dye solution almost 20 times faster than the rate observed for ZrO<sub>2</sub> modified glass substrates. We suggest that this difference may be related to the hydrophilic character of the two films under study, which may affect the charge carrier injection process and, therefore, the overall photocatalytic performance.https://www.mdpi.com/2304-6740/12/12/320TFsadsorbentsmethylene bluedegradationUV light photocatalysiscontact angle |
| spellingShingle | Yuliana de Jesús Acosta-Silva Misael Ian Lugo-Arredondo Salvador Gallardo-Hernández Juan Fernando Garcia-Trejo Yasuhiro Matsumoto Sandra Rivas Ana Angélica Feregrino-Pérez Luis A. Godínez Arturo Méndez-López Comparison of Photocatalytic Activity: Impact of Hydrophilic Properties on TiO<sub>2</sub> and ZrO<sub>2</sub> Thin Films Inorganics TFs adsorbents methylene blue degradation UV light photocatalysis contact angle |
| title | Comparison of Photocatalytic Activity: Impact of Hydrophilic Properties on TiO<sub>2</sub> and ZrO<sub>2</sub> Thin Films |
| title_full | Comparison of Photocatalytic Activity: Impact of Hydrophilic Properties on TiO<sub>2</sub> and ZrO<sub>2</sub> Thin Films |
| title_fullStr | Comparison of Photocatalytic Activity: Impact of Hydrophilic Properties on TiO<sub>2</sub> and ZrO<sub>2</sub> Thin Films |
| title_full_unstemmed | Comparison of Photocatalytic Activity: Impact of Hydrophilic Properties on TiO<sub>2</sub> and ZrO<sub>2</sub> Thin Films |
| title_short | Comparison of Photocatalytic Activity: Impact of Hydrophilic Properties on TiO<sub>2</sub> and ZrO<sub>2</sub> Thin Films |
| title_sort | comparison of photocatalytic activity impact of hydrophilic properties on tio sub 2 sub and zro sub 2 sub thin films |
| topic | TFs adsorbents methylene blue degradation UV light photocatalysis contact angle |
| url | https://www.mdpi.com/2304-6740/12/12/320 |
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