A high performance nonenzymatic electrochemical glucose sensor based on polyvinylpyrrolidone-graphene nanosheets-nickel nanoparticles-chitosan nanocomposite.
作者： Zhiguang Liu , Yujing Guo , Chuan Dong
DOI: 10.1016/J.TALANTA.2015.01.037
关键词:
摘要: Abstract In this report, a new nanocomposite was successfully synthesized by chemical deposition of nickel nanoparticles (NiNPs) on polyvinylpyrrolidone (PVP) stabilized graphene nanosheets (GNs) with chitosan (CS) as the protective coating. The obtained (PVP–GNs–NiNPs–CS) characterized X-ray photoelectron spectroscopy (XPS) and transmission electron microscopy (TEM). Benefiting from synergistic effect GNs (large surface area high conductivity), NiNPs (high electrocatalytic activity towards glucose oxidation) CS (good film-forming antifouling ability), nonenzymatic electrochemical sensor established. displays greatly enhanced oxidation in NaOH solution. PVP–GNs–NiNPs–CS based demonstrates good sensitivity, wide linear range (0.1 μM–0.5 mM), outstanding detection limit (30 nM), attractive selectivity, reproducibility, stability well prominent feasibility for real sample analysis. proposed experiment might open up possibility widespread use non-enzymatic sensors monitoring blood owing to its advantages low cost, simple preparation excellent properties detection.
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