News Column

Recent Studies by M. Chen and Co-Authors Add New Data to Nanofibers Findings

February 28, 2014



By a News Reporter-Staff News Editor at Science Letter -- Current study results on Nanofibers have been published. According to news reporting from Yangzhou, People's Republic of China, by NewsRx journalists, research stated, "Polyacrylonitrile (PAN) nanofiber membranes functionalized with calix[8]arenes (C[8]) were successfully prepared by electrospinning of PAN solutions with addition of various calixarenes. Uniform electrospun C[8]/PAN nanofibers were obtained by incorporating three types of calix[8]arenes into the PAN matrix and characterized by scanning electron microscopy (SEM), attenuated total reflection Fourier transform infrared (ATR-FTIR), thermal gravimetric analysis (TGA), and X-ray powder diffraction (XRD)."

The news correspondents obtained a quote from the research, "The SEM results showed that the addition of calix[8]arenes resulted in a decrease in the diameter of PAN nanofibers. Static adsorption behavior was studied by using C[8]/PAN nanofibers as an adsorbent and Congo red and Neutral red as model dye molecules. The adsorption of Congo red onto Amide-Cal[8]-15/PAN nanofibers fitted the second-order kinetic model, and the apparent adsorption rate constant was 1.1 X 10(-3) g.mg(-1).min(-1) at 25 degrees C. Then, by virtue of electrostatic attraction, as-prepared Au nanoparticles were immobilized on Amide-Cal[8]/PAN nanofibers to form Au/Amide-Cal[8]/PAN composite nanofibers. The catalytic activity of the as-prepared Au/Amide-Cal[8]/PAN composite nanofibers was investigated by monitoring the reduction of Congo red in the presence of NaBH4. The reduction kinetics was explained by the assumption of a pseudo-first-order reaction with regard to Congo red."

According to the news reporters, the research concluded: "Au/Amide-Cal[8]/PAN composite nanofibers exhibited high catalytic activity, excellent stability, and convenient recycling."

For more information on this research see: Electrospinning of Calixarene-Functionalized Polyacrylonitrile Nanofiber Membranes and Application as an Adsorbent and Catalyst Support. Langmuir, 2013;29(38):11858-11867. Langmuir can be contacted at: Amer Chemical Soc, 1155 16TH St, NW, Washington, DC 20036, USA. (American Chemical Society - www.acs.org; Langmuir - www.pubs.acs.org/journal/langd5)

Our news journalists report that additional information may be obtained by contacting M. Chen, Key Lab Environm Mat & Environm Engn Jiangsu Prov, Yangzhou 225002, Jiangsu, People's Republic of China. Additional authors for this research include C.J. Wang, W. Fang, J. Wang, W. Zhang, G. Jin and G.W. Diao (see also Nanofibers).

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

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Source: Science Letter


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