Based on the strong it-it conjunctive effect between benzene ring and carbon nanotube and the reduction ability of aldehyde group to silver ammonia solution, the Vanillin molecules can be absorbed on the carbon nanotubes and reduce the [ Ag (NH3)2]+ in situ. Silver nanoparticle/carbon nanotube( Ag-NPs/CNTs) composite nanomaterials have been prepared successfully. The results of UV-visible absorption and fluorescence spectra identified the adsorption of vanilla to CNTs and the formation of Ag-NPs with the diameter of 5. 0 nm on their surface. TEM characterization further confirmed the Ag NPs with small particle size loading on the CNTs. The prepared nanocomposites exhibit the obvious fluorescence characteristic and relative high electrocatalytic reduction ability to H2O2 in the concentrations range of 1.0xl0-7 -6. 0xl0-7mol/L.%基于苯环与碳纳米管之间较强的π-π共轭效应和醛基对银氨溶液的还原作用,利用吸附在碳纳米管上的香草醛分子原位还原[Ag(NH3)2]+,成功获得了纳米银/碳纳米管(Ag-NPs/CNTs)复合纳米材料.紫外-可见吸收光谱和荧光光谱结果表明,碳纳米管对香草醛分子有较强的吸附作用及银纳米粒子的形成.透射电镜结果表明,碳纳米管表面形成了大小约5.0 nm银纳米颗粒.所制备的纳米复合材料表现出较明显的荧光特性,且对浓度为1.0×10-7～6.0× 10-7 mol/L的H2O2表现出较好的电催化还原能力.
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