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Researchers from Dalian Institute of Chemical Physics Report on Findings in Nitrogen (Synthesis of Fe/Fe3C nanoparticles encapsulated in...

July 7, 2014



Researchers from Dalian Institute of Chemical Physics Report on Findings in Nitrogen (Synthesis of Fe/Fe3C nanoparticles encapsulated in nitrogen-doped carbon with single-source molecular precursor for the oxygen reduction reaction)

By a News Reporter-Staff News Editor at Clinical Trials Week -- Investigators discuss new findings in Nitrogen. According to news originating from Dalian, People's Republic of China, by NewsRx correspondents, research stated, "Ammonium ferric citrate (AFC) was used as a single-source molecular precursor to prepare Fe/Fe3C nanoparticles encapsulated in nitrogen-doped carbon by pyrolysis in Ar atmosphere followed by acid-leaching. Comparative studies, using citric acid and ferric citrate as the precursors, indicated that the ammonia and ferric ion in AFC and the pyrolysis temperature affected the composition of iron species and the properties of carbon in AFC-derived materials."

Our news journalists obtained a quote from the research from the Dalian Institute of Chemical Physics, "Above the pyrolysis temperature of 600 degrees C, the iron species were Fe/Fe3C, and the carbon had a hollow graphitic nanoshell structure in AFC-derived materials. The specific surface area and content of nitrogen element decreased with increasing pyrolysis temperature. The AFC-derived material pyrolyzed at 600 C had the optimal graphitization degree, specific surface area (489 m(2) g(-1)) and content of nitrogen (1.8 wt.%), thus resulted in the greatest activity for oxygen reduction reaction among the AFC-derived materials pyrolyzed at different temperatures."

According to the news editors, the research concluded: "The AFC-derived material pyrolyzed at 600 degrees C exhibited improved methanol-resistance ability compared with Pt/C catalyst."

For more information on this research see: Synthesis of Fe/Fe3C nanoparticles encapsulated in nitrogen-doped carbon with single-source molecular precursor for the oxygen reduction reaction. Carbon, 2014;75():381-389. Carbon can be contacted at: Pergamon-Elsevier Science Ltd, The Boulevard, Langford Lane, Kidlington, Oxford OX5 1GB, England. (Elsevier - www.elsevier.com; Carbon - www.elsevier.com/wps/product/cws_home/258)

The news correspondents report that additional information may be obtained from J. Wang, Chinese Academy Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Dalian 116023, People's Republic of China. Additional authors for this research include G.X. Wang, S. Miao, X.L. Jiang, J.Y. Li and X.H. Bao (see also Nitrogen).

Keywords for this news article include: Asia, Dalian, Nitrogen, Chalcogens, Nanoparticle, Nanotechnology, Emerging Technologies, People's Republic of China

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC


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Source: Clinical Trials Week


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