氧化石墨烯/二氧化铈-镍铝-层状双金属氢氧化物复合材料制备L-半胱氨酸传感器

doi:10.7506/spkx1002-6630-201614025

摘要/Abstract

摘要：

采用尿素水解法一步制备氧化石墨烯/二氧化铈掺杂的镍铝层状双金属氢氧化物复合材料（graphene oxide/CeO2-NiAl-layered double hydroxide composite，GO/CeO2-NiAl-LDHs）。采用红外光谱、X-晶体衍射、场发射扫描电子显微镜和电化学技术表征了材料的结构和性能。GO/CeO2-NiAl-LDHs为层状结构，具有良好的电化学活性。利用GO/CeO2-NiAl-LDHs修饰充蜡石墨电极制备了L-半胱氨酸（Cys）传感器，Cys的氧化峰电流和其在3×10－7～1×10－6 mol/L的浓度范围内，呈良好的线性关系，该传感器可用于实际样品中Cys的检测。

关键词: 氧化石墨烯, 层状双金属氢氧化物, 电化学检测, 半胱氨酸

Abstract:

Graphene oxide/CeO2-NiAl-layered double hydroxide composite (GO/CeO2-NiAl-LDHs) was prepared using a
urea hydrolysis method and characterized by Fourier transform infrared (FT-IR) spectroscopy, X-Ray diffraction (XRD),
field emission scanning electron microscopy (FE-SEM) and electrochemical techniques. GO/CeO2-NiAl-LDHs showed good
electrochemical activity with an obvious layered structure. A sensor of L-cysteine (Cys) was fabricated using GO/CeO2-
NiAl-LDHs modified paraffin-impregnated graphite electrode (GO/CeO2-NiAl-LDHs/WGE). The oxidation peak currents
depending on the concentrations showed a good linear relationship in a range of 3 × 10-7 - 1 × 10-6 mol/L. The sensor could
be used for Cys sensing in real samples.

Key words: graphene oxide, layered double hydroxide, electrochemical determination, Cys

中图分类号:

TQ035

袁爱国，李斌，陈健平，晋冠平. 氧化石墨烯/二氧化铈-镍铝-层状双金属氢氧化物复合材料制备L-半胱氨酸传感器[J]. 食品科学, doi: 10.7506/spkx1002-6630-201614025.

YUAN Aiguo, LI Bin, CHEN Jianping, JIN Guanping. Preparation of Graphene Oxide/CeO2-NiAl-Layered Double Hydroxide Composite for Cysteine Sensing[J]. FOOD SCIENCE, doi: 10.7506/spkx1002-6630-201614025.

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