Anatase titania activated by Cu(II) or Zn(II) nanoparticles for the photooxidation of methanol assisted by Rhodamine-B
| Autor: | Wissame Chettah, David Montero, Jacques C. Védrine, Mohamed-Salah Medjram, Anne Davidson, Siham Barama, Mohamed Selmane |
|---|---|
| Přispěvatelé: | Université 20 Août 1955 Skikda, Laboratoire des Matériaux Catalytiques et Catalyse en Chimie organique (LMCCCO), Université des Sciences et de la Technologie Houari Boumediene [Alger] (USTHB), Institut des matériaux de Paris-Centre (IMPC), Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Ecole Superieure de Physique et de Chimie Industrielles de la Ville de Paris (ESPCI Paris), Université Paris sciences et lettres (PSL)-Institut de Chimie du CNRS (INC)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Réactivité de Surface (LRS), Institut de Chimie du CNRS (INC)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Anatase
Materials science Diffuse reflectance infrared fourier transform Oxide Nanoparticle 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences Catalysis chemistry.chemical_compound chemistry Rhodamine B Photocatalysis Hydroxide [CHIM]Chemical Sciences General Materials Science 0210 nano-technology Nuclear chemistry |
| Zdroj: | Materials Chemistry and Physics Materials Chemistry and Physics, Elsevier, 2021, 257, pp.123714-. ⟨10.1016/j.matchemphys.2020.123714⟩ |
| ISSN: | 0254-0584 |
| Popis: | This paper deals with the photocatalytic reactivity of anatase titania particles, modified by surface deposition of Cu2+ and Zn2+ oxide/hydroxide nanoparticles which are detected by EDS and FX techniques. The objective of the preparation steps was chosen to avoid the formation of larges Cu and Zn oxide particles, which could be identified by XRD and other techniques. Their activity for methanol photocatalytic oxidation in water was studied and Rhodamine-B was added as photo-sensibilizer. To obtain a-TiO2 support, a thermal activation of commercial Millennium-PC500 nanosized powder was achieved. 3Cu/a-TiO2 and 3Zn/a-TiO2 catalysts (3 wt% of Cu or Zn) were prepared under simple, easy and reproducible experimental conditions, namely by impregnation with nitrate salts. Catalysts and titania support were characterized by: X-rays diffraction, fluorescence spectroscopy, FEG- SEM equipped with EDS accessory, N2-sorption and UV–Vis Diffuse Reflectance spectroscopy. Only crystalline anatase TiO2was identified by XRD and large Cu and Zn oxide/hydroxide nanoparticles were easily evidenced by EDS and other techniques. Electronic band-gap was measured by UV–Vis spectroscopy using Kubelka-Munkand Tauc's methods, results varied in the order: 3Cu/a-TiO2 |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect