Carbon nanotube carrier was functionalized with single-stranded deoxyribonucleic acid (DNA),and the Pd/DNA-CNTs catalyst was prepared by using NaBH4 reduction method for ethanol electrooxidation in alkaline media.The results showed that the introduction of DNA effectively promoted the uniform dispersion of Pd nanoparticles on the surface of the carbon carrier surface.The Pd/DNA-CNTs catalyst presented a high ethanol oxidation activity and excellent anti-toxicity ability.It was also found that the amount of DNA had a significant effect on the performances of Pd catalyst.When the content of DNA was 1%,the Pd nanoparticles were best dispersed with the mean particle size of 2.3nm and the peak current density of 86.5mA/cm2.Chronoamperometry test indicated that the activity decay ratio of Pd/DNA-CNTs catalyst was much lower than that of Pd/CNTs catalyst,showing a good poisoning resistance.
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基金资助
国家自然科学基面上项目(21273152)
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