News Column

Studies from South China University of Technology in the Area of Hydrogen Described

May 28, 2014



By a News Reporter-Staff News Editor at Biotech Week -- Investigators discuss new findings in Hydrogen. According to news reporting originating from Guangzhou, People's Republic of China, by NewsRx correspondents, research stated, "Nickel sulfide (NiS) and graphitic carbon nitride (g-C3N4) hybrid photocatalysts were prepared via a simple and reproducible in situ template-free ion-exchange process. The physical and photophysical properties of the g-C3N4/NiS hybrid photocatalysts were characterized by X-ray diffraction (XRD), high-resolution transmission electron microcopy (HRTEM), and ultraviolet visible diffuse reflection spectroscopy (DRS)."

Our news editors obtained a quote from the research from the South China University of Technology, "The photocatalytic hydrogen evolution, photoluminescence spectroscopy (PL), and photoelectrochemical (PEC) experiments indicate that the NiS cocatalysts can efficiently promote the separation of photogenerated charge carriers in g-C3N4 and consequently enhance the H-2 evolution activity. The g-C3N4/NiS-1.5 mol % sample shows the highest photocatalytic activity, and the corresponding H-2 evolution rate is 44.77 mu mol h(-1), which approached that of optimal 2.0 wt % Pt/g-C3N4 (47.61 mu mol h(-1)). A possible photocatalytic mechanism of NiS cocatalysts on the improvement of the photocatalytic performance of g-C3N4 is proposed and supported by PL and PEC results."

According to the news editors, the research concluded: "The g-C3N4/NiS shows high stable photocatalytic hydrogen evolution ability under visible light irradiation."

For more information on this research see: In Situ Template-Free Ion-Exchange Process to Prepare Visible-Light-Active g-C3N4/NiS Hybrid Photocatalysts with Enhanced Hydrogen Evolution Activity. Journal of Physical Chemistry C, 2014;118(15):7801-7807. Journal of Physical Chemistry C can be contacted at: Amer Chemical Soc, 1155 16TH St, NW, Washington, DC 20036, USA. (American Chemical Society - www.acs.org; Journal of Physical Chemistry C - www.pubs.acs.org/journal/jpccck)

The news editors report that additional information may be obtained by contacting Z.H. Chen, S China Univ Technol, Key Lab Enhanced Heat Transfer & Energy Conservat, Minist Educ, Sch Chem & Chem Engn, Guangzhou 510640, People's Republic of China. Additional authors for this research include P. Sun, B. Fan, Z.G. Zhang and X.M. Fang (see also Hydrogen).

Keywords for this news article include: Asia, Gases, Elements, Hydrogen, Guangzhou, Photocatalyst, Nanotechnology, Photocatalytic, Inorganic Chemicals, Emerging Technologies, People's Republic of China

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Source: Biotech Week