caa a22 4500 445880937 CHVBK 20180317145542.0 cr unu---uuuuu 170323e20110401xx s 000 0 eng 10.1007/s00604-010-0535-6 doi (NATIONALLICENCE)springer-10.1007/s00604-010-0535-6 One-pot solvothermal synthesis of a Cu2O/Graphene nanocomposite and its application in an electrochemical sensor for dopamine [Elektronische Daten] [Fengyuan Zhang, Yongjie Li, Yong-e Gu, Zaihua Wang, Chunming Wang] Nanocomposites composed of cuprous oxide (Cu2O) and graphene were synthesized via reduction of copper(II) in ethylene glycol. This material possesses the specific features of both Cu2O and graphene. Its morphology was characterized by X-ray diffraction, transmission electron microscopy, scanning electron microscopy, and X-ray photoelectron spectroscopy. Cyclic voltammetry was used to evaluate the electrochemical response of a glass carbon electrode (GCE) modified with the nanocomposite towards dopamine (DA). Compared to the bare GCE, the Cu2O nanoparticles modified electrode and the graphene modified electrode, the nanocomposites modified electrode displays high electrocatalytic activity in giving an oxidation peak current that is proportional to the concentration of DA in the range from 0.1 to 10μM,with a detection limit of 10nM (S/N = 3). The modified electrode shows excellent selectivity and sensitivity even in the presence of high concentration of uric acid and can be applied to determine DA in real samples with satisfactory results. Figure Cu2O/Graphene nanocomposites were successfully prepared, Cu2O particles were uniformly distributed on transparent graphene and no particles scattered out of the supports. Electrochemical experiment results indicate that the nanocomposites modified electrode displays a wide linear region, excellent selectivity and sensitivity to DA. Springer-Verlag, 2011 Graphene nationallicence Cu2O nationallicence Dopamine nationallicence Electrochemical sensor nationallicence Zhang Fengyuan Department of Chemistry, Lanzhou University, 730000, Lanzhou, People's Republic of China aut Li Yongjie Department of Chemistry, Lanzhou University, 730000, Lanzhou, People's Republic of China aut Gu Yong-e Department of Chemistry, Lanzhou University, 730000, Lanzhou, People's Republic of China aut Wang Zaihua Department of Chemistry, Lanzhou University, 730000, Lanzhou, People's Republic of China aut Wang Chunming Department of Chemistry, Lanzhou University, 730000, Lanzhou, People's Republic of China aut Microchimica Acta Springer Vienna 173/1-2(2011-04-01), 103-109 0026-3672 173:1-2<103 2011 173 604 https://doi.org/10.1007/s00604-010-0535-6 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00604-010-0535-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Zhang Fengyuan Department of Chemistry, Lanzhou University, 730000, Lanzhou, People's Republic of China aut NATIONALLICENCE 700 1- Li Yongjie Department of Chemistry, Lanzhou University, 730000, Lanzhou, People's Republic of China aut NATIONALLICENCE 700 1- Gu Yong-e Department of Chemistry, Lanzhou University, 730000, Lanzhou, People's Republic of China aut NATIONALLICENCE 700 1- Wang Zaihua Department of Chemistry, Lanzhou University, 730000, Lanzhou, People's Republic of China aut NATIONALLICENCE 700 1- Wang Chunming Department of Chemistry, Lanzhou University, 730000, Lanzhou, People's Republic of China aut NATIONALLICENCE 773 0- Microchimica Acta Springer Vienna 173/1-2(2011-04-01), 103-109 0026-3672 173:1-2<103 2011 173 604 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer