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

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

Research output: Article

4 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)1323-1334
Number of pages12
JournalTopics in Catalysis
Volume61
Issue number12-13
DOIs
Publication statusPublished - aug. 1 2018

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

Fingerprint Dive into the research topics of 'Graphite Oxide-TiO<sub>2</sub> Nanocomposite Type Photocatalyst for Methanol Photocatalytic Reforming Reaction'. Together they form a unique fingerprint.

  • Cite this