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构建盐水、环己烷、表面活性剂和助表面活性剂四元体系,采用六角相液晶为模板在避光温和条件下将Pd2+还原制备出纳米Pd催化剂,用偏光显微分析、XRD、TEM、选区电子衍射(SAED)和HRTEM等手段对其进行表征,研究了反应时间对纳米Pd微观形貌和尺寸的影响,并用循环伏安法研究了纳米Pd修饰玻碳电极对乙醇的电催化活性。结果表明,避光反应24 h后制备出呈规则形貌的纳米Pd材料,平均粒径为(31±1)nm,对乙醇有较高的电催化活性和抗中毒能力。
The binary system of salt water, cyclohexane, surfactant and cosurfactant was constructed. The hexagonal liquid crystal was used as a template to reduce Pd2 + to prepare nano-Pd catalyst. The microstructure of the catalyst was characterized by polarized light microscopy, XRD, TEM, (SAED) and HRTEM were used to characterize the effect of reaction time on the morphology and size of nano-Pd. The electrocatalytic activity of nano-Pd modified glassy carbon electrode on ethanol was studied by cyclic voltammetry. The results showed that the average particle size of (31 ± 1) nm nanostructured Pd nanoparticles with a regular morphology was obtained after 24 h of dark reaction, and had high electrocatalytic activity and anti-toxic ability to ethanol.