Comparison of the effects generated by the dry-soft grinding and the photodeposition of Au and Pt processes on the visible light absorption and photoactivity of TiO2
The influence of dry-soft grinding and photodeposition of gold (Au) or platinum (Pt) in the improvement of the photoactivity of TiO2 synthesized by an integrated sol-gel and solvothermal method was studied. TiO2 was modified by a dry-soft grinding process in a planetary ball mill (TiO2(G)). Subseque...
- Autores:
- Tipo de recurso:
- Fecha de publicación:
- 2019
- Institución:
- Universidad de Medellín
- Repositorio:
- Repositorio UDEM
- Idioma:
- eng
- OAI Identifier:
- oai:repository.udem.edu.co:11407/5788
- Acceso en línea:
- http://hdl.handle.net/11407/5788
- Palabra clave:
- grinding process
photodeposition
TiO2
Crystallinity
Grinding (machining)
Light absorption
Phenols
Photocatalytic activity
Platinum
Sol-gels
Titanium dioxide
Grinding process
High photocatalytic activities
Phenol photodegradation
Photo-deposition
Simulated solar radiations
Solvothermal method
TiO2
Visible light absorption
Phosphorus compounds
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- http://purl.org/coar/access_right/c_16ec
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| dc.title.none.fl_str_mv |
Comparison of the effects generated by the dry-soft grinding and the photodeposition of Au and Pt processes on the visible light absorption and photoactivity of TiO2 |
| title |
Comparison of the effects generated by the dry-soft grinding and the photodeposition of Au and Pt processes on the visible light absorption and photoactivity of TiO2 |
| spellingShingle |
Comparison of the effects generated by the dry-soft grinding and the photodeposition of Au and Pt processes on the visible light absorption and photoactivity of TiO2 grinding process photodeposition TiO2 Crystallinity Grinding (machining) Light absorption Phenols Photocatalytic activity Platinum Sol-gels Titanium dioxide Grinding process High photocatalytic activities Phenol photodegradation Photo-deposition Simulated solar radiations Solvothermal method TiO2 Visible light absorption Phosphorus compounds |
| title_short |
Comparison of the effects generated by the dry-soft grinding and the photodeposition of Au and Pt processes on the visible light absorption and photoactivity of TiO2 |
| title_full |
Comparison of the effects generated by the dry-soft grinding and the photodeposition of Au and Pt processes on the visible light absorption and photoactivity of TiO2 |
| title_fullStr |
Comparison of the effects generated by the dry-soft grinding and the photodeposition of Au and Pt processes on the visible light absorption and photoactivity of TiO2 |
| title_full_unstemmed |
Comparison of the effects generated by the dry-soft grinding and the photodeposition of Au and Pt processes on the visible light absorption and photoactivity of TiO2 |
| title_sort |
Comparison of the effects generated by the dry-soft grinding and the photodeposition of Au and Pt processes on the visible light absorption and photoactivity of TiO2 |
| dc.subject.none.fl_str_mv |
grinding process photodeposition TiO2 Crystallinity Grinding (machining) Light absorption Phenols Photocatalytic activity Platinum Sol-gels Titanium dioxide Grinding process High photocatalytic activities Phenol photodegradation Photo-deposition Simulated solar radiations Solvothermal method TiO2 Visible light absorption Phosphorus compounds |
| topic |
grinding process photodeposition TiO2 Crystallinity Grinding (machining) Light absorption Phenols Photocatalytic activity Platinum Sol-gels Titanium dioxide Grinding process High photocatalytic activities Phenol photodegradation Photo-deposition Simulated solar radiations Solvothermal method TiO2 Visible light absorption Phosphorus compounds |
| description |
The influence of dry-soft grinding and photodeposition of gold (Au) or platinum (Pt) in the improvement of the photoactivity of TiO2 synthesized by an integrated sol-gel and solvothermal method was studied. TiO2 was modified by a dry-soft grinding process in a planetary ball mill (TiO2(G)). Subsequently, Au or Pt particles were photodeposited in both unmodified TiO2 and TiO2(G) obtaining Au-TiO2, Pt-TiO2, Au-TiO2(G), and Pt-TiO2(G) materials. The photoactivity of the materials was evaluated in the phenol photodegradation under simulated solar radiation. Pt-TiO2 showed the greatest degree of photoactivity improvement in comparison with TiO2 and TiO2-P25. The dry-soft grinding process led to a high photocatalytic activity of TiO2(G) that was similar to Pt-TiO2 activity as consequence of a slight increase in the crystallinity in TiO2(G) due to an additional anatase formation in comparison with TiO2. However, further photocatalytic improvement in TiO2(G) were not achieved with the addition of Au or Pt. Therefore, the dry-soft grinding treatment and noble metal deposition led to similar improvements in the photocatalytic activity of TiO2 for phenol oxidation. © 2019 IOP Publishing Ltd. |
| publishDate |
2019 |
| dc.date.accessioned.none.fl_str_mv |
2020-04-29T14:54:01Z |
| dc.date.available.none.fl_str_mv |
2020-04-29T14:54:01Z |
| dc.date.none.fl_str_mv |
2019 |
| dc.type.eng.fl_str_mv |
Article |
| dc.type.coarversion.fl_str_mv |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
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http://purl.org/coar/resource_type/c_6501 http://purl.org/coar/resource_type/c_2df8fbb1 |
| dc.type.driver.none.fl_str_mv |
info:eu-repo/semantics/article |
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20531591 |
| dc.identifier.uri.none.fl_str_mv |
http://hdl.handle.net/11407/5788 |
| dc.identifier.doi.none.fl_str_mv |
10.1088/2053-1591/ab4316 |
| identifier_str_mv |
20531591 10.1088/2053-1591/ab4316 |
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http://hdl.handle.net/11407/5788 |
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eng |
| language |
eng |
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https://www.scopus.com/inward/record.uri?eid=2-s2.0-85072724520&doi=10.1088%2f2053-1591%2fab4316&partnerID=40&md5=6f51903ecb35fef936d727157f4958db |
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6 |
| dc.relation.citationissue.none.fl_str_mv |
10 |
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Today, 230, pp. 104-111 Zieli?ska-Jurek, A., Kowalska, E., Sobczak, J., Lisowski, W., Ohtani, B., Zaleska, A., Preparation and characterization of monometallic (Au) and bimetallic (Ag/Au) modified-titania photocatalysts activated by visible light (2011) Appl. Catalysis B, 101, pp. 504-514 Zunic, V., Vukomanovic, M., Skapin, S., Suvorov, D., Kovac, J., Photocatalytic properties of TiO2 and TiO2/Pt: A sol-precipitation, sonochemical and hydrothermal approach (2014) Ultrason. Sonochem., 21, pp. 367-375 |
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20192020-04-29T14:54:01Z2020-04-29T14:54:01Z20531591http://hdl.handle.net/11407/578810.1088/2053-1591/ab4316The influence of dry-soft grinding and photodeposition of gold (Au) or platinum (Pt) in the improvement of the photoactivity of TiO2 synthesized by an integrated sol-gel and solvothermal method was studied. TiO2 was modified by a dry-soft grinding process in a planetary ball mill (TiO2(G)). Subsequently, Au or Pt particles were photodeposited in both unmodified TiO2 and TiO2(G) obtaining Au-TiO2, Pt-TiO2, Au-TiO2(G), and Pt-TiO2(G) materials. The photoactivity of the materials was evaluated in the phenol photodegradation under simulated solar radiation. Pt-TiO2 showed the greatest degree of photoactivity improvement in comparison with TiO2 and TiO2-P25. The dry-soft grinding process led to a high photocatalytic activity of TiO2(G) that was similar to Pt-TiO2 activity as consequence of a slight increase in the crystallinity in TiO2(G) due to an additional anatase formation in comparison with TiO2. However, further photocatalytic improvement in TiO2(G) were not achieved with the addition of Au or Pt. Therefore, the dry-soft grinding treatment and noble metal deposition led to similar improvements in the photocatalytic activity of TiO2 for phenol oxidation. © 2019 IOP Publishing Ltd.engInstitute of Physics PublishingIngeniería AmbientalFacultad de Ingenieríashttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85072724520&doi=10.1088%2f2053-1591%2fab4316&partnerID=40&md5=6f51903ecb35fef936d727157f4958db610Abdullah, H., Khan, M.D., Ong, H., Yaakab, Z., Modified TiO2 photocatalyst for CO2 photocatalytic reduction: An overview (2017) Journal of CO, 22, pp. 15-32Ali, M., Transformation and powder characteristics of TiO2 during high-energy milling (2014) Journal of Ceramic Processing Research, 15, pp. 290-293Aysin, B., Ozturk, A., Park, J., Silver-loaded TiO2 powders prepared through mechanical ball milling (2013) Ceram. 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Sonochem., 21, pp. 367-375Materials Research Expressgrinding processphotodepositionTiO2CrystallinityGrinding (machining)Light absorptionPhenolsPhotocatalytic activityPlatinumSol-gelsTitanium dioxideGrinding processHigh photocatalytic activitiesPhenol photodegradationPhoto-depositionSimulated solar radiationsSolvothermal methodTiO2Visible light absorptionPhosphorus compoundsComparison of the effects generated by the dry-soft grinding and the photodeposition of Au and Pt processes on the visible light absorption and photoactivity of TiO2Articleinfo:eu-repo/semantics/articlehttp://purl.org/coar/version/c_970fb48d4fbd8a85http://purl.org/coar/resource_type/c_6501http://purl.org/coar/resource_type/c_2df8fbb1Galeano, L., Grupo de Investigaciones y Mediciones Ambientales (GEMA), Universidad de Medellín, Carrera 87 No 30-65, Medellín, Colombia; Valencia, S., Grupo de Investigación Integra, Tecnológico de Antioquia, Institución Universitaria, Calle 78B No 72A-220, Medellín, Colombia; Marín, J.M., Grupo Procesos Fisicoquímicos Aplicados, Facultad de Ingeniería, Universidad de Antioquia SIU/UdeA, Calle 70 No. 52-21, Medellín, Colombia; Restrepo, G., Grupo Procesos Fisicoquímicos Aplicados, Facultad de Ingeniería, Universidad de Antioquia SIU/UdeA, Calle 70 No. 52-21, Medellín, Colombia; Navío, J.A., Instituto de Ciencia de Materiales de Sevilla (ICMS). Centro Mixto CSIC-Universidad de Sevilla, Américo Vespucio 49, Sevilla, 41092, Spain; Hidalgo, M.C., Instituto de Ciencia de Materiales de Sevilla (ICMS). Centro Mixto CSIC-Universidad de Sevilla, Américo Vespucio 49, Sevilla, 41092, Spainhttp://purl.org/coar/access_right/c_16ecGaleano L.Valencia S.Marín J.M.Restrepo G.Navío J.A.Hidalgo M.C.11407/5788oai:repository.udem.edu.co:11407/57882020-05-27 19:13:40.758Repositorio Institucional Universidad de Medellinrepositorio@udem.edu.co |