By a News Reporter-Staff News Editor at Science Letter -- Research findings on Solvents are discussed in a new report. According to news reporting out of Porto Alegre, Brazil, by NewsRx editors, research stated, "TiO2 nanoparticles and TiO2-RGO (reduced graphene oxide) composite were synthesized by ionothermal method at 100 and 120 degrees C for 24h using two different ionic liquids (ILs), 1-(2-methoxyethyl)-3methylimidazolium methanesulfonate (IL1) and 1-(2-methoxyethyl)-3-methylimidazolium tetrafluoroborate (IL2). BET surface area analysis of the composites showed surface areas of 170 and 161 m(2) g(-1) for TiO2 and TiO2-RGO composite respectively."
Our news journalists obtained a quote from the research from Federal University, "TEM images show that the sizes of the particles are around 4 nm and in the composite clearly show that TiO2 NPs are present on the surface of the graphene sheet. The use of IL2 produces a high crystalline TiO2 NPs with pure anatase phase without need of thermal treatment (TT). Hydrogen generation by UV light on TiO2 NPs or TiO2-RGO composite prepared in ILs without thermal treatment (TT) show lower rate than TiO2 P25. After TT at 400 degrees C a higher H-2 production rate (up to 0.76 mmol h(-1) g(-1)) due to the increase in crystallinity was measured. The photocatalytic activity was further enhanced for TiO2-RGO composite."
According to the news editors, the research concluded: "The electron-accepting and electron-transporting properties of graphene in the composite could indeed suppress the charge recombination and improve their photocatalytic activities."
For more information on this research see: Controlled growth of TiO2 and TiO2-RGO composite nanoparticles in ionic liquids for enhanced photocatalytic H-2 generation. Journal of Molecular Catalysis A-Chemical, 2013;378():213-220. Journal of Molecular Catalysis A-Chemical can be contacted at: Elsevier Science Bv, PO Box 211, 1000 Ae Amsterdam, Netherlands (see also Solvents).
Our news journalists report that additional information may be obtained by contacting G. Nagaraju, Univ Fed Rio Grande do Sul, Inst Chem, Lab Photochem & Surfaces LAFOS, BR-91501970 Porto Alegre, RS, Brazil. Additional authors for this research include G. Ebeling, R.V. Goncalves, S.R. Teixeira, D.E. Weibel and J. Dupont.
Keywords for this news article include: Brazil, Solvents, Treatment, Porto Alegre, Nanoparticle, South America, Ionic Liquids, Photocatalyst, Nanotechnology, Photocatalytic, Emerging Technologies
Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2013, NewsRx LLC