Synergistic effect between carbon nanomaterials and ZnO for photocatalytic water decontamination
In: Journal of Catalysis Journal of Catalysis, Elsevier, 2015, 331, pp.172-180. ⟨10.1016/j.jcat.2015.08.011⟩ Repositório Científico de Acesso Aberto de Portugal Repositório Científico de Acesso Aberto de Portugal (RCAAP) instacron:RCAAP; (2015)
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Zugriff:
International audience; ZnO synthesized by chemical vapor deposition (CVD) was combined with different carbon nanomaterials namely nanotubes, nanofibers, nanodiamonds, fullerene and graphene. The materials were characterized by physical adsorption of nitrogen, diffuse reflectance, UV–Vis and photoluminescence (PL) spectroscopies, transmission electron microscopy and temperature programmed desorption. The photocatalytic efficiency of the resulting carbon/ZnO composites was evaluated for phenol degradation under simulated solar light irradiation. In general, the carbon materials enhance the efficiency of ZnO, and the composite containing nitrogen-doped carbon nanotubes (N-CNT/ZnO) showed the highest photocatalytic activity. An increase of 100% in the apparent first order rate constant for phenol degradation was achieved when using N-CNT/ZnO instead of bare ZnO. PL spectra confirmed the presence of efficient electron transfer between the carbon phase and the ZnO with a maximum quenching of ZnO PL emission in the presence of N-CNT. Both ZnO and N-CNT/ZnO show high stability after four reuses.
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Synergistic effect between carbon nanomaterials and ZnO for photocatalytic water decontamination
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| Autor/in / Beteiligte Person: | Faria, Joaquim L. ; Bacsa, Revathi ; Sampaio, Maria J. ; Serp, Philippe ; Axet, Rosa ; Benyounes, Anas ; Adrián M.T. Silva ; Silva, Cláudia G. ; Laboratoire de chimie de coordination (LCC) ; Institut National Polytechnique (Toulouse) (Toulouse INP) ; Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse III - Paul Sabatier (UT3) ; Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie de Toulouse (ICT-FR 2599) ; Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) ; Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS) ; Institut de Chimie de Toulouse (ICT-FR 2599) ; Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3) ; Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut de Recherche pour le Développement (IRD)-Institut National Polytechnique (Toulouse) (Toulouse INP) ; Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3) ; Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS) ; Dept. de Geologia, LAGEMAR ; Universidade Federal Fluminense [Rio de Janeiro] (UFF) ; Faculdade de Engenharia |
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| Quelle: | Journal of Catalysis Journal of Catalysis, Elsevier, 2015, 331, pp.172-180. ⟨10.1016/j.jcat.2015.08.011⟩ Repositório Científico de Acesso Aberto de Portugal Repositório Científico de Acesso Aberto de Portugal (RCAAP) instacron:RCAAP; (2015) |
| Veröffentlichung: | HAL CCSD, 2015 |
| Medientyp: | unknown |
| ISSN: | 0021-9517 (print) ; 1090-2694 (print) |
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