دورية أكاديمية
Evaluation of sol-gel TiO2 photocatalysts modified with carbon or boron compounds and crystallized in nitrogen or air atmospheres
| العنوان: | Evaluation of sol-gel TiO2 photocatalysts modified with carbon or boron compounds and crystallized in nitrogen or air atmospheres |
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| المؤلفون: | Ansón Casaos, Alejandro, Sampaio, Maria Jose, Jarauta-Córdoba, Clara, Martínez Fernández de Landa, María Teresa, Silva, Cláudia, Faria, Joaquim L., Silva, Adrián M. T. |
| المساهمون: | Ministerio de Economía y Competitividad (España), European Commission, Gobierno de Aragón, Fundação para a Ciência e a Tecnologia (Portugal) |
| بيانات النشر: | Elsevier BV |
| سنة النشر: | 2015 |
| المجموعة: | Digital.CSIC (Consejo Superior de Investigaciones Científicas / Spanish National Research Council) |
| مصطلحات موضوعية: | Titanium dioxide, Carbon, Boric acid, Crystallization, Photocatalysis |
| الوصف: | Sol-gel TiO2 photocatalysts are synthesized from titanium isopropoxide and crystallized by thermal treatment under either air atmosphere or nitrogen flow. Reference TiO2 photocatalysts crystallized at 550 ºC for 30 min in air are the most active for the degradation of diphenhydramine pharmaceutical (DPH). In addition, TiO2 precursors are modified with carbon or boron compounds. The highest rates of conversion are obtained in the case of TiO2 modified with boric acid and crystallized in air. The sol-gel photocatalysts with the best performances possess anatase:rutile phase ratios in excess of 95% with anatase crystallites of approximately 60 nm. The photocatalysts are characterized by different solid state and solution techniques, including powder X-ray diffraction, elemental analysis, X-ray photoelectron spectroscopy, Fourier-transform infrared spectroscopy, diffuse reflectance ultraviolet-visible (UV-Vis), UV-Vis liquid spectroscopy, surface area analysis and ammonia thermal programmed desorption. The efficiencies of the synthetized photocatalysts are characterized by the kinetics of DPH degradation under near UV-Vis irradiation. The efficiencies of the synthetized photocatalysts are comparable or even higher than that of the reference P25, although their dispersions in water have much lower absorbance values. ; This work was funded by the Spanish Ministry MINECO and the European Regional Development Fund under the projects PRI-PIBAR-2011-1 and ENE2013-48816-C5-5-R, and the Government of Aragon (DGA) and the European Social Fund (DGA-ESF-T66 Grupo Consolidado). This work was partially supported by Project PEst-C/EQB/LA0020/2013, financed by FEDER through COMPETE – Programa Operacional Factores de Competitividade, and by FCT – Fundação para a Ciência e a Tecnologia, and co-financed by QREN, ON2 and FEDER (Project NORTE-07-0124-FEDER-000015). FCT is acknowledged for funding the doctoral grant SFRH/BD/79878/2011 (MJS). AMTS acknowledges the FCT Investigator 2013 Programme (IF/01501/2013), with financing from the ... |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| تدمد: | 1385-8947 |
| العلاقة: | #PLACEHOLDER_PARENT_METADATA_VALUE#; info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/ENE2013-48816-C5-5-R; Postprint; http://dx.doi.org/10.1016/j.cej.2015.04.136Test; Sí; Chemical Engineering Journal 277: 11-20 (2015); http://hdl.handle.net/10261/115436Test; http://dx.doi.org/10.13039/501100003329Test; http://dx.doi.org/10.13039/501100010067Test; http://dx.doi.org/10.13039/501100001871Test; http://dx.doi.org/10.13039/501100000780Test |
| DOI: | 10.1016/j.cej.2015.04.136 |
| DOI: | 10.13039/501100003329 |
| DOI: | 10.13039/501100010067 |
| DOI: | 10.13039/501100001871 |
| DOI: | 10.13039/501100000780 |
| الإتاحة: | https://doi.org/10.1016/j.cej.2015.04.136Test https://doi.org/10.13039/501100003329Test https://doi.org/10.13039/501100010067Test https://doi.org/10.13039/501100001871Test https://doi.org/10.13039/501100000780Test http://hdl.handle.net/10261/115436Test |
| حقوق: | open |
| رقم الانضمام: | edsbas.D7DDE8D3 |
| قاعدة البيانات: | BASE |
| تدمد: | 13858947 |
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| DOI: | 10.1016/j.cej.2015.04.136 |