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Nanoporous gold film: Surfactant-assisted synthesis, anodic oxidation and sensing application in electrochemical determination of quercetin
Journal of Electroanalytical Chemistry ( IF 4.1 ) Pub Date : 2020-05-01 , DOI: 10.1016/j.jelechem.2020.114097
Shekofe Nasrollahi , Sayed Mehdi Ghoreishi , Asma Khoobi

Abstract In this research for a first time, the effect of cationic, anionic and nonionic surfactants on the gold nanostructures is studied using electrochemical techniques. The results present the size of gold nanostructures depends to the concentration surfactants. Improvement of the designing method is recommended for the anionic surfactant. On the other hand, nonionic and cationic surfactants show less importance for the present study. Also, the optimal concentration of the different surfactants is investigated in fabrication of the nanoporous gold film (NPGF). The studies are accomplished by cyclic voltammetry (CV), Brunauer-Emmett-Teller and scanning electron microscopy techniques. Further, the electrocatalytic behaviour of the gold nanostructures is investigated using quercetin (QU) as an analyte. The peak current of QU at the surface of NPGF shows two linear dynamic ranges from 0.01 to 12.0 and 12.0–100.0 μM. Using the data, detection limit is obtained 1.1 nM for QU. The voltammetric sensing studies suggest that the NPGF will become a potential material in the field of electrochemical sensors.

中文翻译:

纳米多孔金膜:表面活性剂辅助合成、阳极氧化和传感在槲皮素电化学测定中的应用

摘要 本研究首次利用电化学技术研究了阳离子、阴离子和非离子表面活性剂对金纳米结构的影响。结果表明金纳米结构的大小取决于表面活性剂的浓度。建议改进阴离子表面活性剂的设计方法。另一方面,非离子和阳离子表面活性剂对本研究的重要性较低。此外,在纳米多孔金膜 (NPGF) 的制造中研究了不同表面活性剂的最佳浓度。这些研究是通过循环伏安法 (CV)、Brunauer-Emmett-Teller 和扫描电子显微镜技术完成的。此外,使用槲皮素 (QU) 作为分析物研究了金纳米结构的电催化行为。NPGF 表面 QU 的峰值电流显示出两个线性动态范围,从 0.01 到 12.0 和 12.0–100.0 μM。使用这些数据,QU 的检测限为 1.1 nM。伏安传感研究表明,NPGF 将成为电化学传感器领域的潜在材料。
更新日期:2020-05-01
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