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Researchers from Hong Kong Baptist University Report New Studies and Findings in the Area of Nanoparticles (Investigation of the optimal weight...

July 30, 2014



Researchers from Hong Kong Baptist University Report New Studies and Findings in the Area of Nanoparticles (Investigation of the optimal weight contents of reduced graphene oxide-gold nanoparticles composites and theirs application in ...)

By a News Reporter-Staff News Editor at Biotech Week -- A new study on Nanoparticles is now available. According to news originating from Hong Kong, People's Republic of China, by NewsRx correspondents, research stated, "Graphene, as a single-atom-thick carbon material, is considered an ideal platform for designing composite nanomaterials for high-performance electrochemical or electrocatalytic devices. Reduced graphene oxide-gold nanoparticles composites were prepared by depositing gold nanoparticles (AuNPs) on the surface of reduced graphene oxide (RGO) with different RGO-to-AuNPs weight ratios."

Our news journalists obtained a quote from the research from Hong Kong Baptist University, "The resulting composite materials were characterized morphologically and optically by scanning electron microscopy (SEM) and UV-visible absorption spectroscopy. Cyclic voltammetry and amperometric measurements were employed to investigate the electrocatalytic effect of different composites toward the reduction of hydrogen peroxide. Experimental results demonstrated that RGO-AuNPs composites displayed high stability and catalytic effect for the analysis of hydrogen peroxide, demonstrating the possible synergistic effects of the RGO-AuNPs composite materials. Additionally, direct electron transfer of glucose oxidase (GOD) was achieved after codeposition of GOD and chitosan (CHIT)."

According to the news editors, the research concluded: "The glassy carbon electrode modified with RGO-AuNPs/CHIT-GOD material exhibited an excellent catalytic effect for glucose detection with a sensitivity of 34 mA M-1 cm(-2) at a detection potential of -0.3 V vs. Ag\AgCl reference."

For more information on this research see: Investigation of the optimal weight contents of reduced graphene oxide-gold nanoparticles composites and theirs application in electrochemical biosensors. Journal of Electroanalytical Chemistry, 2014;720():84-91. Journal of Electroanalytical Chemistry can be contacted at: Elsevier Science Sa, PO Box 564, 1001 Lausanne, Switzerland (see also Nanoparticles).

The news correspondents report that additional information may be obtained from X.Y. Bai, Hong Kong Baptist University, Dept. of Chem, Kowloon Tong, Hong Kong, People's Republic of China.

Keywords for this news article include: Hong Kong, People's Republic of China, Asia, Bioengineering, Bionanotechnology, Biosensing, Biotechnology, Chemicals, Chemistry, Electrochemical, Emerging Technologies, Hydrogen Peroxide, Nanobiotechnology, Nanoparticle, Nanoparticles, Nanotechnology

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC


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Source: Biotech Week


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