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Topics in Catalysis
Erschienen in: Topics in Catalysis 12-13/2018

11.05.2018 | Original Paper

Graphite Oxide-TiO2 Nanocomposite Type Photocatalyst for Methanol Photocatalytic Reforming Reaction

verfasst von: Katalin Majrik, Árpád Turcsányi, Zoltán Pászti, Tamás Szabó, Attila Domján, Judith Mihály, András Tompos, Imre Dékány, Emília Tálas

Erschienen in: Topics in Catalysis | Ausgabe 12-13/2018

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Abstract

Graphite-oxide/TiO2 (GO/TiO2) composite materials were prepared by heterocoagulation method from Brodie’s graphite-oxide (GO) in order to test them as catalysts in the methanol photocatalytic reforming reaction in liquid phase. The preparation of the composite itself resulted in only little changes in the structure of GO as it was indicated by attenuated total reflection infrared (ATR-IR) and 13C magic-angle spinning nuclear magnetic resonance (13C MAS NMR) spectroscopic measurements. However, during the photocatalytic reaction, all of the GO/TiO2 samples darkened strongly indicating structural changes of GO. X-ray photoelectron spectroscopy along with NMR confirmed the loss of oxygen functionalities and emergence of graphitic species in the samples recovered from the photocatalytic reaction. Model experiments were designed to identify the key factors determining the activity of the GO/TiO2 derived photocatalysts. It was found that the emergence of a pronounced coupling between TiO2 and the graphite-like carbonaceous material is the most important contribution to get active and stable photocatalysts.
Vorheriger Artikel Oxygen Assisted Morphological Changes of Pt Nanosized Crystals
Nächster Artikel Porphyrin Layers at Cu/Au(111)–Electrolyte Interfaces: In Situ EC-STM Study

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Metadaten
Titel
Graphite Oxide-TiO2 Nanocomposite Type Photocatalyst for Methanol Photocatalytic Reforming Reaction
verfasst von
Katalin Majrik
Árpád Turcsányi
Zoltán Pászti
Tamás Szabó
Attila Domján
Judith Mihály
András Tompos
Imre Dékány
Emília Tálas
Publikationsdatum
11.05.2018
Verlag
Springer US
Erschienen in
Topics in Catalysis / Ausgabe 12-13/2018
Print ISSN: 1022-5528
Elektronische ISSN: 1572-9028
DOI
https://doi.org/10.1007/s11244-018-0989-z

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