caa a22 4500 445881283 CHVBK 20180317145544.0 cr unu---uuuuu 170323e20110901xx s 000 0 eng 10.1007/s00604-011-0620-5 doi (NATIONALLICENCE)springer-10.1007/s00604-011-0620-5 Preparation and characterization of methylene blue-SDS- multiwalled carbon nanotubes nanocomposite for the detection of hydrogen peroxide [Elektronische Daten] [Ida Tiwari, Manorama Singh] A nanocomposite was prepared by physical adsorption of (cationic) methylene blue (MB) on (anionic) sodium dodecylsulfate (SDS) that was wrapped on multiwalled carbon nanotubes (MWCNTs) on the surface of a glassy carbon electrode. This electrostatic interaction enables electrical communication between the electrode and analyte. Horseradish peroxidase was then immobilized in a film of gelatin on the nanocomposite to form a biosensor for hydrogen peroxide. Scanning electron microscopy, transmission electron microscopy, Fourier transform infrared and UV-vis spectrometry, and cyclic voltammetry were applied to characterize the electrode. The addition of both MWCNTs and MB causes a synergistic effect and leads to a large signal enhancement. The prepared nanocomposite material modified sensor shows better response in presence of several interferences. The biosensor has detection limit of 5 nM of hydrogen peroxide (at S/N = 3) with a linear response between 0.2μM and 1.4mM. Its lifetime is >4months under dry conditions at 4°C. Figure A nanocomposite was prepared by physical adsorption of methylene blue on sodium dodecylsulfate that was wrapped on multiwalled carbon nanotubes on the surface of a glassy carbon electrode. This electrostatic interaction enables electrical communication between the electrode and analyte. The composite has been successfully applied for Hydrogen peroxide detection. Springer-Verlag, 2011 Multiwalled carbon nanotubes nationallicence Enzyme nationallicence Gelatin nationallicence Nanocomposite nationallicence Biosensor nationallicence Tiwari Ida Department of Chemistry, Faculty of Science, Banaras Hindu University, 221005, Varanasi, India aut Singh Manorama Department of Chemistry, Faculty of Science, Banaras Hindu University, 221005, Varanasi, India aut Microchimica Acta Springer Vienna 174/3-4(2011-09-01), 223-230 0026-3672 174:3-4<223 2011 174 604 https://doi.org/10.1007/s00604-011-0620-5 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00604-011-0620-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Tiwari Ida Department of Chemistry, Faculty of Science, Banaras Hindu University, 221005, Varanasi, India aut NATIONALLICENCE 700 1- Singh Manorama Department of Chemistry, Faculty of Science, Banaras Hindu University, 221005, Varanasi, India aut NATIONALLICENCE 773 0- Microchimica Acta Springer Vienna 174/3-4(2011-09-01), 223-230 0026-3672 174:3-4<223 2011 174 604 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer