Education Ministry Key Laboratory of Resource Chemistry, Department of Chemistry, College of Life and Environmental Sciences, Shanghai Normal University, Shanghai 200234, China.
Anal Biochem. 2012 Nov 15;430(2):111-5. doi: 10.1016/j.ab.2012.08.014. Epub 2012 Aug 23.
Novel gold nanoparticle-decorated halloysite nanotube (AuNP-HNT) composites were effectively synthesized and then used for electrochemical sensing applications. The AuNP-HNT nanocomposites were characterized by transmission electron microscopy, field emission scanning electron microscopy, zeta potential, and UV-Vis spectroscopy. The AuNP-HNT composite-based modified electrode exhibited high eletrocatalytic activity to the reduction of hydrogen peroxide (H(2)O(2)) with a linear range of 5.0×10(-6) to 2.55×10(-4)M and a detection limit of 1×10(-6)M (signal/noise=3), indicating that it could be used as a novel nonenzymatic electrochemical H(2)O(2) sensor. Furthermore, the Ru(bpy)(3)(2+)/AuNP-HNT/Nafion composite film modified electrode exhibited good electrochemiluminescence activity for determining tripropylamine.
新型金纳米粒子修饰的埃洛石纳米管（AuNP-HNT）复合材料被有效合成，并用于电化学传感应用。AuNP-HNT 纳米复合材料通过透射电子显微镜、场发射扫描电子显微镜、Zeta 电位和紫外可见光谱进行了表征。基于 AuNP-HNT 复合材料的修饰电极对过氧化氢（H2O2）的还原表现出高电催化活性，线性范围为 5.0×10-6 至 2.55×10-4 M，检测限为 1×10-6 M（信号/噪声=3），表明其可用作新型非酶电化学 H2O2 传感器。此外，Ru(bpy)32+/AuNP-HNT/Nafion 复合膜修饰电极对三丙胺的测定表现出良好的电化学发光活性。
