通过自组装的方式,将水溶性杯[4]磺酸盐(C4)修饰到石墨烯(GN)表面,通过各种表征手段表明,获得了水分散性GN-C4二元纳米复合材料。将其修饰在电极表面,考察尿酸的电化学反应。结果表明:GN-C4既表现出C4的超分子识别和富集能力,又展现出石墨烯的大比表面积和导电性能,两者协同促进尿酸的电化学反应,表现出较好的电化学检测能力。GN-C4对尿酸的电化学检测具有较宽的线性范围(5～100μmol/L),也具有较低的检测限(1μmol/L)。
The water-soluble calix[4]arenesulfonates (C4) was modified onto the surface of graphene(GN) by self-assembly approach,and the water-dispersed GN-C4 binary nanocomposite was obtained,as confirmed by various characterization methods.It was modified on the electrode surface to examine the electrochemical response of uric acid.The results showed that GN-C4 not only exhibited the supramolecular recognition and enrichment ability of C4,but also demonstrated the large surface area and conductivity of graphene,which synergistically promoted the electrochemical response of uric acid,showing a good electrochemical detection ability.The electrochemical detection of uric acid by GN-C4 had a wide linear range (5～100μmol/L) and a low detection limit (1μmol/L).
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基金资助
国家自然科学基金(21773203)
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