Photocatalytic activity of TiO2 based composite films by porous conjugated polymer coating of nanoparticles
| Autor: | Y. Song, J. Zhang, L. Yang, S. Cao, H. Yang, L. Jiang, Y. Dan, P. Le Rendu, T.P. Nguyen |
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| Přispěvatelé: | Peking University [Beijing], Meteorological Service of Canada, School of Public Health, The University of Hong Kong (HKU), Agence Universitaire de la Francophonie (AUF), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, DEPARTMENT OF ELECTRONIC ENGIN, City University of Hong Kong [Hong Kong] (CUHK), Institut des Matériaux Jean Rouxel (IMN), Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST), Université de Nantes (UN)-Université de Nantes (UN)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Ecole Polytechnique de l'Université de Nantes (EPUN), Université de Nantes (UN)-Université de Nantes (UN), Environment and Climate Change Canada, Université de Nantes (UN)-Université de Nantes (UN)-Ecole Polytechnique de l'Université de Nantes (EPUN), Université de Nantes (UN)-Université de Nantes (UN)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Materials science
Composite number Nanoparticle 02 engineering and technology 010402 general chemistry 01 natural sciences Polyvinyl alcohol chemistry.chemical_compound General Materials Science Thin film ComputingMilieux_MISCELLANEOUS chemistry.chemical_classification Mechanical Engineering Polymer 021001 nanoscience & nanotechnology Condensed Matter Physics 0104 chemical sciences chemistry Chemical engineering 13. Climate action Mechanics of Materials Titanium dioxide Photocatalysis [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci] 0210 nano-technology Visible spectrum |
| Zdroj: | Materials Science in Semiconductor Processing Materials Science in Semiconductor Processing, Elsevier, 2016, 42, pp.54-57. ⟨10.1016/j.mssp.2015.06.078⟩ Materials Science in Semiconductor Processing, 2016, 42, pp.54-57. ⟨10.1016/j.mssp.2015.06.078⟩ |
| ISSN: | 1369-8001 |
| DOI: | 10.1016/j.mssp.2015.06.078⟩ |
| Popis: | To improve the photocatalytic activity of titanium dioxide (TiO2), one possible approach consists of extending light absorption to visible range by using conjugated polymers together with TiO2 nanoparticles in order to enhance light harvesting. The use of appropriate polymers would facilitate the charge separation at the contact surface of the materials and hence effectively increases the photocatalytic reaction, allowing a more efficient oxidation of organic pollutants. In this work, we proposed an improved synthesis method for obtaining conjugated polymer/TiO2 composite thin films having a porous morphology, which can potentially increase the contact surface between materials. A polyvinyl alcohol/titanium dioxide (PVA/TiO2) precursor was prepared and deposited as thin films on glass substrates. The films were then thermally treated by a controlled protocol, resulting in the transformation of PVA into a conjugated polymer coating the TiO2 particles. The morphology of the obtained composite films showed a porous aspect indicating that the polymer and the nanoparticles were intimately mixed. Photocatalytic activities of the porous composite films (P-PVA/TiO2) were examined through the degradation processes of a phenol solution under visible light irradiation. The results showed that, by their particular morphology, which increased the polymer-nanoparticle contact surface, P-PVA/TiO2 composites easily and efficiently degraded phenol under visible light. |
| Databáze: | OpenAIRE |
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