抗坏血酸
亚甲蓝
纳米复合材料
循环伏安法
检出限
电极
核化学
复合数
化学
缓冲溶液
材料科学
分析化学(期刊)
无机化学
电化学
纳米技术
有机化学
色谱法
复合材料
物理化学
催化作用
光催化
食品科学
作者
Huihui Chen,Zhe Zhang,Dongqing Cai,Shengyi Zhang,Bailin Zhang,Jilin Tang,Zhengyan Wu
标识
DOI:10.1016/j.solidstatesciences.2011.12.011
摘要
A conductive composite film consisted of natural nanostructure attapulgite (AT) with poly(methylene blue) (PMB) was constructed on glassy carbon (GC) electrode. The electrode exhibited an effective electrocatalytic activity towards the oxidation of ascorbic acid (AA) and well-defined oxidation peaks were observed in 0.1 M phosphate buffer solutions (PBS, pH 7.0) via cyclic voltammetry. Linear calibration plot was obtained over the range of 1.0 × 10−5 to 5.0 × 10−2 M for ascorbic acid with the detection limit value of 1.0 × 10−6 M. The main interfering factor in biological samples was experimentally excluded. In addition, UV–Vis spectra were applied to reveal the formation of the nanocomposite film of PMB-AT.
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