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Researchers at China University of Petroleum Discuss Findings in Enzymes and Coenzymes

February 7, 2014

By a News Reporter-Staff News Editor at Science Letter -- Current study results on Enzymes and Coenzymes have been published. According to news reporting originating in Qingdao, People's Republic of China, by NewsRx journalists, research stated, "In the pursuit of electrocatalysts with great economic and ecological values for non-enzymatic glucose sensors, one-dimensional copper@carbon (Cu@C) core-shell coaxial nanowires (NWs) have been successfully prepared via a simple continuous flow wet-chemistry approach from electroplating wastewater. The as-obtained products were characterized by X-ray powder diffraction, scanning electron microscopy, transmission electron microscopy, selected area electron diffraction, energy dispersive X-ray spectroscopy and Raman spectroscopy."

The news reporters obtained a quote from the research from the China University of Petroleum, "The electrocatalytic activity of the modified electrodes by Cu@C NWs towards glucose oxidation was investigated by cyclic voltammetry and chronoamperometry. It was found that the as-obtained Cu@C NWs showed good electrochemical properties and could be used as an electrochemical sensor for the detection of glucose molecules. Compared to the other electrodes including the bare Nafion/glassy carbon electrode (GCE) and several hot hybrid nanostructures modified GCE, a substantial decrease in the overvoltage of the glucose oxidation was observed at the Cu@C NWs electrodes with oxidation starting at ca. 0.20 V vs. Ag/AgCl (3 M KCl). At an applied potential of 0.65 V, Cu@C NWs electrodes had a high and reproducible sensitivity of 437.8 A cm(-2) mM(-1) to glucose. Linear responses were obtained with a detection limit of 50 nM. More importantly, the proposed electrode also had good stability, high resistance against poisoning by chloride ion and commonly interfering species."

According to the news reporters, the research concluded: "These good analytical performances make Cu@C NWs promising for the future development of enzyme-free glucose sensors."

For more information on this research see: Copper@carbon coaxial nanowires synthesized by hydrothermal carbonization process from electroplating wastewater and their use as an enzyme-free glucose sensor. Analyst, 2013;138(2):559-68. (Royal Society of Chemistry -; Analyst -

Our news correspondents report that additional information may be obtained by contacting Y. Zhao, State Key Laboratory for Heavy Oil Processing, CNPC, China University of Petroleum, Qingdao 266555, People's Taiwan. Additional authors for this research include Z. He and Z. Yan (see also Enzymes and Coenzymes).

Keywords for this news article include: Asia, Qingdao, Chemistry, Electrochemical, Enzymes and Coenzymes, People's Republic of China.

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Source: Science Letter

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