Photo-electrocatalytic performance of poly(3,4-ethylenedioxythiophene)/TiO2 nano-tree films deposited by oCVD/CVD for H2 production
In: ISSN: 0169-4332, 2023
Online
academicJournal
Zugriff:
International audience ; The hydrogen production from photo-electrocatalytic water splitting attracts extensive attention as a direct way to convert solar energy into chemical fuels. In this work, innovative photo-anodes composed of TiO2 which has a preferable growth orientation [2 1 1] conjugated with PEDOT as bi-layers are prepared by a dry process strategy, combining oxidative and metalorganic chemical vapor deposition (CVD). Pure anatase, dendritic TiO2 films of variable thickness are obtained at 500 °C by varying the deposition time. Increase of films thickness from 474 to 2133 nm results in morphologies that evolve from dense and angular structures to isolated and nanostructured tree-like columns with a concomitant decrease of the charge transfer resistance due to the enhancement of active facets of anatase structure. The PEDOT/TiO2 bi-layer with an overall thickness of 1350 nm and a 50 nm thick upper-PEDOT layer exhibits the highest photocurrent response (0.26 mA cm−2 at 1.8 V/RHE), a fast photocurrent response under illumination, and the best hydrogen yield up to 4.1 µmol cm-2h−1 with electronic conductivity being three order of magnitude higher than pristine TiO2
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Photo-electrocatalytic performance of poly(3,4-ethylenedioxythiophene)/TiO2 nano-tree films deposited by oCVD/CVD for H2 production
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Autor/in / Beteiligte Person: | Nada, Amr ; Bekheet, Maged ; Samélor, Diane ; Vergnes, Hugues ; Villeneuve-Faure, Christina ; Cartier, Jim ; Charmette, Christophe ; Tingry, Sophie ; Caussat, Brigitte ; Vahlas, Constantin ; Roualdès, Stéphanie ; Institut Européen des membranes (IEM) ; Institut de Chimie - CNRS Chimie (INC-CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM) ; Université de Montpellier (UM) ; Laboratoire de Génie Chimique (LGC) ; Université Toulouse III - Paul Sabatier (UT3) ; Université de Toulouse (UT)-Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP) ; Université de Toulouse (UT) ; Institut Pierre-Simon-Laplace (IPSL (FR_636)) ; École normale supérieure - Paris (ENS-PSL) ; Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité) ; Technical University of Berlin / Technische Universität Berlin (TU) ; Centre interuniversitaire de recherche et d'ingenierie des matériaux (CIRIMAT) ; Université de Toulouse (UT)-Université de Toulouse (UT)-Institut de Chimie - CNRS Chimie (INC-CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP) ; Diélectriques Solides et Fiabilité (LAPLACE-DSF) ; LAboratoire PLasma et Conversion d'Energie (LAPLACE) ; Université de Toulouse (UT)-Université Toulouse III - Paul Sabatier (UT3) |
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Zeitschrift: | ISSN: 0169-4332, 2023 |
Veröffentlichung: | HAL CCSD ; Elsevier, 2023 |
Medientyp: | academicJournal |
DOI: | 10.1016/j.apsusc.2023.157919 |
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