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Findings from Tsinghua University Reveals New Findings on Fullerenes

May 30, 2014



By a News Reporter-Staff News Editor at Science Letter -- Investigators publish new report on Fullerenes. According to news reporting out of Beijing, People's Republic of China, by NewsRx editors, research stated, "Perfluorooctane sulfonate (PFOS) is one of the persistent organic pollutants that has aroused global concern. Carbon nanotubes (CNTs) have drawn much research attention due to their unique properties."

Our news journalists obtained a quote from the research from Tsinghua University, "This study was aimed to investigate the adsorption behaviour of PFOS with relation to CNTs and clarify their interactions. Electrostatic repulsion suppressed the sorption of PFOS to multiwalled carbon nanotubes (MWCNTs), resulting in low sorption at high pH. With the increase of anion concentration, the removal of PFOS decreased by 20 to 30% because ionic strength changed the aggregation of the MWCNTs. Unlike inorganic anions, cationic metals including Cu(II) and Pb(II) had a significant impact on the sorption of PFOS onto the MWCNTs. At low concentrations of Cu(II) and Pb(II), PFOS removal decreased due to the suppressive effect of ionic strength, while the removal of PFOS increased rapidly with increasing metal concentrations, especially for functionalized MWCNTs."

According to the news editors, the research concluded: "The enhanced adsorption of PFOS at high Cu(II) and Pb(II) concentrations was attributed to the adsorbed cationic metals which might further adsorb PFOS."

For more information on this research see: Adsorption of perfluorooctane sulfonate on carbon nanotubes: influence of pH and competitive ions. Water Science and Technology, 2014;69(7):1489-1495. Water Science and Technology can be contacted at: Iwa Publishing, Alliance House, 12 Caxton St, London SW1H0QS, England. (IWA Publishing - www.iwaponline.com; Water Science and Technology - www.iwaponline.com/wst)

Our news journalists report that additional information may be obtained by contacting Y. Bei, Tsinghua Univ, Sch Environm, State Key Joint Lab Environm Simulat & Pollut Con, Beijing 100084, People's Republic of China. Additional authors for this research include S.B. Deng, Z.W. Du, B. Wang, J. Huang and G. Yu (see also Fullerenes).

Keywords for this news article include: Asia, Beijing, Fullerenes, Nanotechnology, Carbon Nanotubes, 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: Science Letter


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