caa a22 4500 445881135 CHVBK 20180317145543.0 cr unu---uuuuu 170323e20110901xx s 000 0 eng 10.1007/s00604-011-0625-0 doi (NATIONALLICENCE)springer-10.1007/s00604-011-0625-0 Glassy carbon electrode modified with a film composed of Ni(II), quercetin and graphene for enzyme-less sensing of glucose [Elektronische Daten] [Jun-Yong Sun, Ke-Jing Huang, Yang Fan, Zhi-Wei Wu, Dan-Dan Li] We present a modified glassy carbon electrode as a sensing platform for glucose. It is based on a composite film prepared from Ni(II) ion, quercetin and graphene. The sensor was characterized by cyclic voltammetry. The electron transfer coefficient, reaction rate constant and catalytic rate constant were determined and found to be 0.53, 5.4s−1 and 2.93 × 103M−1 s−1, respectively. The catalytic current depends linearly on the concentration of glucose in the range from 3 to 900μM, with a detection limit of 0.5μM (at an S/R of 3). The sensor exhibits good reproducibility, stability, fast response, and high sensitivity. Figure Cyclic voltammograms of Ni(II)-Qu/Gr/GCE in 0.1M NaOH solution at various scan rates (from inner to outer): 0.02, 0.04, 0.06, 0.08, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1.0V·s−1. Plot of I p versus υ1/2 and E p versus logυ. Springer-Verlag, 2011 Glucose nationallicence Quercetin nationallicence Graphene nationallicence Chemically-modified electrode nationallicence Electrocatalysis nationallicence Sun Jun-Yong College of Chemistry and Chemical Engineering, Xinyang Normal University, 464000, Xinyang, People's Republic of China aut Huang Ke-Jing College of Chemistry and Chemical Engineering, Xinyang Normal University, 464000, Xinyang, People's Republic of China aut Fan Yang College of Chemistry and Chemical Engineering, Xinyang Normal University, 464000, Xinyang, People's Republic of China aut Wu Zhi-Wei College of Chemistry and Chemical Engineering, Xinyang Normal University, 464000, Xinyang, People's Republic of China aut Li Dan-Dan College of Chemistry and Chemical Engineering, Xinyang Normal University, 464000, Xinyang, People's Republic of China aut Microchimica Acta Springer Vienna 174/3-4(2011-09-01), 289-294 0026-3672 174:3-4<289 2011 174 604 https://doi.org/10.1007/s00604-011-0625-0 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00604-011-0625-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Sun Jun-Yong College of Chemistry and Chemical Engineering, Xinyang Normal University, 464000, Xinyang, People's Republic of China aut NATIONALLICENCE 700 1- Huang Ke-Jing College of Chemistry and Chemical Engineering, Xinyang Normal University, 464000, Xinyang, People's Republic of China aut NATIONALLICENCE 700 1- Fan Yang College of Chemistry and Chemical Engineering, Xinyang Normal University, 464000, Xinyang, People's Republic of China aut NATIONALLICENCE 700 1- Wu Zhi-Wei College of Chemistry and Chemical Engineering, Xinyang Normal University, 464000, Xinyang, People's Republic of China aut NATIONALLICENCE 700 1- Li Dan-Dan College of Chemistry and Chemical Engineering, Xinyang Normal University, 464000, Xinyang, People's Republic of China aut NATIONALLICENCE 773 0- Microchimica Acta Springer Vienna 174/3-4(2011-09-01), 289-294 0026-3672 174:3-4<289 2011 174 604 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer