A simple and sensitive method for determination of taxifolin on palladium nanoparticles supported poly (diallyldimethylammonium chloride) functionalized graphene modified electrode

作者：Wang, Qinqin; Wang, Lu; Li, Gaiping; Ye, Baoxian^*

来源：Talanta, 2017, 164: 323-329.

DOI：10.1016/j.talanta.2016.11.045

• Taxifolin
• Poly(diallyldimethylammonium chloride)
• functionalized grapheme
• Palladium nanoparticles
• Square wave voltammetry

Palladium nanoparticles with diameter of around 5-10 nm supported on poly (diallyldimethylammonium chloride) (PDDA)-functionalized graphene composites were prepared by a simple chemical method. As prepared nanocomposites were characterized by transmission electron microscopy (TEM), x-ray diffraction (XRD), ultraviolet -visible spectrophotometry (UV-vis) and electrochemical techniques, which were clearly demonstrated that palladium nanoparticles were uniformly dispersed on the graphene sheets. Based on the PDDA-Gr-Pd nanocomposites, a new voltammetric sensor was established and exhibited excellent electrocatalytic activity and fast electron transfer rate toward taxifolin. Under the optimal conditions, a lower detection limit of 1x10(-9) mol L-1 (S/N=3) and a wide linear detection range from 4x10(-8) to 1x10(-6) mol L-1 were achieved by square wave voltammetry (SWV). The proposed method was successfully applied for determination of taxifolin in fructus polygoni orientalis with well results.

• 出版日期2017-3-1
• 单位郑州大学; 洛阳理工学院