News Column

Studies from Fuzhou University in the Area of Photocatalytics Reported

May 2, 2014

By a News Reporter-Staff News Editor at Science Letter -- New research on Photocatalytics is the subject of a report. According to news reporting from Fujian, People's Republic of China, by NewsRx journalists, research stated, "The photocatalytic behavior of catalysts is closely related to their surface properties. Here, the K4Nb6O17 nanolayered photocatalyst was synthesized by the hydrothermal method and was subsequently surface-modified by being loaded with ultrafine gold nanoparticles via the decomposition of a gold cationic complex precursor [Au(en)(2)](3+) (en = ethylenediamine)."

The news correspondents obtained a quote from the research from Fuzhou University, "The photocatalytic activities of the as-synthesized samples were evaluated in the photodegradation of the azo-dye methyl orange (MO) under UV irradiation. The photocatalytic activity of the pristine nanocrystalline K4Nb6O17 sample was efficiently improved as the initial solution pH was decreased; however, the photocatalytic activity was diminished when the concentration of dissolved oxygen was decreased. This behavior indicates that a synergistic effect of the dissolved oxygen molecules and surface bridging hydroxyl groups plays a key role in the photocatalysis."

According to the news reporters, the research concluded: "In addition, we found that an appropriate surface modification of the K4Nb6O17 by Au nanoparticles can significantly enhance its photocatalytic activity, an effect which may be attributed to the efficient separation of photogenerated charge carriers in this nanocomposite system."

For more information on this research see: Nano-layered K4Nb6O17 as an efficient photocatalyst for methyl orange degradation: Influence of solution pH and surface-dispersed gold nanoparticles. Journal of Molecular Catalysis A-Chemical, 2014;383():209-216. Journal of Molecular Catalysis A-Chemical can be contacted at: Elsevier Science Bv, PO Box 211, 1000 Ae Amsterdam, Netherlands (see also Photocatalytics).

Our news journalists report that additional information may be obtained by contacting Y.N. Cao, Fuzhou Univ, Natl Engn Res Center Chem Fertilizer Catalyst, Fuzhou 350002, Fujian, People's Republic of China. Additional authors for this research include L.L. Jiang, H.F. Guo and Q. Zheng.

Keywords for this news article include: Asia, Fujian, Nanoparticle, Photocatalyst, Nanotechnology, Emerging Technologies, People's Republic of China

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Source: Science Letter