Nanocomposites consisting of copper and copper oxide incorporated into MoS4 nanostructures for sensitive voltammetric determination of bisphenol A.
作者： Ghazala Ashraf , Muhammad Asif , Ayesha Aziz , Zhengyun Wang , Xiaoyu Qiu
DOI: 10.1007/S00604-019-3406-9
关键词:
摘要: A nanocomposite (NC) of type Cu/Cu2O/CuO@MoS4 was obtained via coprecipitation and a hydrothermal approach from copper oxide nanoparticles MoS4 nanostructures. series nanocomposites has been fabricated with varying fractions MoS4. The NCs were characterized by XRD, XPS, SEM TEM. synergistic effect enlarged specific surface, high electrocatalytic activity the presence mixed valencies strongly enhance redox response at interface a glassy carbon electrode (GCE) modified NC. intercalation properties in result outstanding electro-oxidative performance towards bisphenol (BPA). GCE, best operated +0.16 V vs. SCE, linear 0.0001 μM to 17 μM BPA concentration range (R2 = 0.998) sensitivity (1587 mA μM−1 cm−2). sensor can detect very good selectivity, enhanced storage stability low detection limit 0.10 nM (S/N = 3). This is lowest value among non-enzymatic biosensors reported until now. used for real-time in-vitro monitoring (spiked) serum samples.
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