基于 CdSe 纳米粒子修饰的聚二烯丙基二甲基氯化铵功能化石墨烯纳米复合材料膜的秦皮素灵敏检测。
Sensitive detection of esculetin based on a CdSe nanoparticles-decorated poly(diallyldimethylammonium chloride)-functionalized graphene nanocomposite film.
机构信息
Department of Chemistry, Lanzhou University, Lanzhou 730000, P. R.China.
出版信息
Analyst. 2011 Nov 7;136(21):4447-53. doi: 10.1039/c1an15594f. Epub 2011 Sep 7.
An electrochemical sensor based on a CdSe nanoparticles (NPs)-decorated poly(diallyldimethylammonium chloride) (PDDA)-functionalized graphene (CdSe-PDDA-G) nanocomposite was fabricated for the sensitive detection of esculetin. The nanocomposite was characterized by X-ray diffraction (XRD), ultraviolet/visible spectra (UV-vis) and transmission electron microscopy (TEM). Cyclic voltammetry (CV) and differential pulse voltammetry (DPV) were used to investigate the electrochemical behaviors of esculetin on the CdSe-PDDA-G composite film-modified glassy carbon electrode (GCE). The experimental results indicated that the incorporation of CdSe NPs with PDDA-G greatly enhanced the electrochemical response of esculetin. This electrochemical sensor displayed satisfactory analytical performance for esculetin detection over a range from 1.0 × 10(-8) to 5.0 × 10(-5) mol L(-1) with a detection limit of 4.0 × 10(-9) mol L(-1) (S/N = 3). Moreover, the sensor also exhibited good reproducibility and stability, and could be used for the detection of esculetin in real samples with satisfactory results.
一种基于 CdSe 纳米粒子（NPs）修饰的聚二烯丙基二甲基氯化铵（PDDA）功能化石墨烯（CdSe-PDDA-G）纳米复合材料的电化学传感器被制备用于灵敏检测秦皮素。该纳米复合材料通过 X 射线衍射（XRD）、紫外/可见光谱（UV-vis）和透射电子显微镜（TEM）进行了表征。循环伏安法（CV）和差分脉冲伏安法（DPV）用于研究秦皮素在 CdSe-PDDA-G 复合膜修饰的玻碳电极（GCE）上的电化学行为。实验结果表明，CdSe NPs 与 PDDA-G 的结合极大地增强了秦皮素的电化学响应。该电化学传感器在 1.0×10(-8)至 5.0×10(-5)mol L(-1)的范围内对秦皮素的检测表现出令人满意的分析性能，检测限为 4.0×10(-9)mol L(-1)（S/N = 3）。此外，该传感器还表现出良好的重现性和稳定性，可用于实际样品中秦皮素的检测，结果令人满意。
Zotero 插件