微分脉冲伏安法
检出限
拉曼光谱
材料科学
石墨
分析化学(期刊)
线性扫描伏安法
傅里叶变换红外光谱
电极
伏安法
透射电子显微镜
循环伏安法
电化学
化学工程
纳米技术
化学
色谱法
复合材料
光学
工程类
物理化学
物理
作者
Chong Sun,Muhan Zhang,Qiqi Fei,Daoying Wang,Zhilan Sun,Geng Zhong,Weimin Xu,Fang Liu
标识
DOI:10.1016/j.snb.2017.10.065
摘要
In this paper, a novel immunosensor was built for quantitative detection of heat shock protein 90 (HSP90) based on graphite-like carbon nitride nanosheets (g-C3N4 NSs) hybridized with gold-F127 nanoparticles (g-C3N4-F127-Au NSs) modified electrode. The transmission electron microscope (TEM) was used to observe the structure and morphology of g-C3N4-F127-Au NSs. The successful preparation of g-C3N4-F127-Au NSs was characterized by UV–vis spectra, fourier transform infrared spectra (FTIR) and Raman spectra. Meanwhile, the electrochemical properties were measured by linear sweep voltammetric (LSV) and differential pulse voltammetry (DPV). Under the optimized conditions, the peak currents were linear with the concentration of HSP90 ranging from 3.5 μg/mL to 2.43 mg/mL. The linear regression equation was I (μA) = 10.31–10.05logc (R2 = 0.9986, n = 9) with the detection limit of 2.67 μg/mL. Finally, the immunosensor exhibited good selectivity performance and provided a new approach for meat quality evaluation.
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