By a News Reporter-Staff News Editor at Science Letter -- Current study results on Chalcogens have been published. According to news originating from Rion, Greece, by NewsRx correspondents, research stated, "A series of C-60 catalysts supported on MCM-41 was prepared for the singlet oxygen-mediated oxidation of alkenes to the corresponding hydroperoxides (ene or Schenck reaction). The one-step wet impregnation method, followed by heating at 180 degrees C, was used for dispersing effectively 6, 9 and 12 wt% C-60 onto the MCM-41 surface."
Our news journalists obtained a quote from the research from the Institute of Chemical and Engineering Sciences, "N-2 adsorption-desorption measurements, FT-IR. XRD, DRS and TGA were used to characterize the prepared photocatalysts. The photocatalytic activity of the C-60/MCM-41 series was determined by using the photooxygenation of 2-methyl-2-heptene as a probe reaction. The results of the present study were compared with those obtained in our previous studies where the same photocatalysts had been prepared by using the successive wetness impregnation method. It was found that very effective C-60/MCM-41 photocatalysts can be synthesized by applying the one-step wet impregnation method. All three photocatalysts exhibited similar activity in terms of substrate conversion, whereas their intrinsic activity which is expressed by the TON or TOF values, decreased with increasing C-60 content. The replacement of the successive incipient wetness impregnation by the simpler wet impregnation method provokes an increase in the photocatalytic activity of the samples with C-60 content equal to 9 and 12 wt% but it does not affect the photocatalytic activity of the sample with C-60 content equal to 6 wt%, which exhibits the maximum intrinsic activity."
According to the news editors, the research concluded: "The influence of the deposition method and the C-60 loading on the photocatalytic performance of the C-60/MCM-41 catalysts was rationalized on the basis of the different size of the supported C-60 crystallites."
For more information on this research see: Deposition of fullerene C-60 on the surface of MCM-41 via the one-step wet impregnation method: Active catalysts for the singlet oxygen mediated photooxidation of alkenes. Journal of Molecular Catalysis A-Chemical, 2014;381():9-15. Journal of Molecular Catalysis A-Chemical can be contacted at: Elsevier Science Bv, PO Box 211, 1000 Ae Amsterdam, Netherlands (see also Chalcogens).
The news correspondents report that additional information may be obtained from J. Kyriakopoulos, Fdn Res & Technol Hellas, Inst Chem Engn Sci FORTH ICE HT, GR-26504 Rion, Greece. Additional authors for this research include A.T. Papastavrou, G.D. Panagiotou, M.D. Tzirakis, K.S. Triantafyllidis, M.N. Alberti, K. Bourikas, C. Kordulis, M. Orfanopoulos and A. Lycourghiotis.
Keywords for this news article include: Rion, Greece, Europe, Carbon, Chalcogens, Fullerenes, Photocatalyst, Nanotechnology, Photocatalytic, Singlet Oxygen, Emerging Technologies, Reactive Oxygen Species
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