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Study Data from Ain Shams University Update Knowledge of Nanocomposites

May 16, 2014

By a News Reporter-Staff News Editor at Science Letter -- Research findings on Nanocomposites are discussed in a new report. According to news reporting originating from Cairo, Egypt, by NewsRx correspondents, research stated, "TiO2 nanowires (NWs) were prepared by hydrothermal treatment of TiO2 nanoparticles in alkaline medium, while hyperbranched polyester HPES-OH was prepared by polycondensation. Chemical structure of HPES-OH was confirmed by H-1 and C-13 NMR spectroscopy, FTIR and the molar mass was determined using gel permeation chromatography (GPC)."

Our news editors obtained a quote from the research from Ain Shams University, "Nanocomposites based on HPES-OH and TiO2 NWs are synthesized either by ex situ method or by in situ technique. Formation of the nanocomposites and investigation of their morphology were done using transmission electron microscope (TEM), scanning electron microscope (SEM) and X-ray diffraction (XRD). Photocatalytic activity of the synthesized nanocomposites compared to that of pure TiO2-NWs was studied. The chemical oxygen demand (COD) analysis confirmed the mineralization of wastewater via photocatalytic degradation. The results showed that not only photocatalytic activity of nanocomposites was much higher than that of the pure TiO2-NWs, but also the degradation time was reduced to large extent. This result can be attributed to reduction of the crystallite size produced due to the modification reaction."

According to the news editors, the research concluded: "Durability of HPES-OH/TiO2 nanocomposites was investigated and the results confirmed that utilization of the modified TiO2-NWs in the second run was favorable, which suggests that strong adhesion between the NWs and HPES-OH was achieved through the formation of 2D structure."

For more information on this research see: Photocatalytic activity of hyperbranched polyester/TiO2 nanocomposites. Applied Catalysis A-General, 2014;472():191-197. Applied Catalysis A-General can be contacted at: Elsevier Science Bv, PO Box 211, 1000 Ae Amsterdam, Netherlands (see also Nanocomposites).

The news editors report that additional information may be obtained by contacting A.F. Ghanem, Ain Shams University, Fac Sci, Cairo, Egypt. Additional authors for this research include A.A. Badawy, N. Ismail, Z.R. Tian, M.H.A. Rehim and A. Rabia.

Keywords for this news article include: Cairo, Egypt, Africa, Photocatalyst, Nanotechnology, Photocatalytic, Emerging Technologies

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Source: Science Letter

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