摘要
以分解得到的单链脱氧核糖核酸(DNA)对碳纳米管载体进行功能化处理,采用NaBH_(4)还原法制备Pd/DNA-CNTs催化剂,用于碱性介质中乙醇的电化学氧化。结果表明:DNA的引入有效地促进了Pd纳米粒子在碳载体表面的均匀分散。Pd/DNA-CNTs催化剂显示出较高的乙醇氧化活性和优异的抗中毒能力。研究还发现,DNA用量对Pd催化剂的性能有重要影响。当DNA加入量为1%时,Pd纳米粒子的分散效果最佳,其平均粒径为2.3nm,乙醇氧化峰电流密度可达86.5mA/cm^(2)。计时电流试验表明,Pd/DNA-CNTs催化剂的活性衰减比率远低于Pd/CNTs催化剂,显示出良好的抗中毒能力。
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/cm^(2).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.
作者
吕新荣
陈维民
袁倩星
Lv Xinrong;Chen Weimin;Yuan Qianxing(School of Environmental and Chemical Engineering,Shenyang Ligong University,Shenyang 110159)
出处
《化工新型材料》
CAS
CSCD
北大核心
2023年第9期204-208,共5页
New Chemical Materials
基金
国家自然科学基面上项目(21273152)。
关键词
乙醇电氧化
钯
脱氧核糖核酸
功能化
催化剂
ethanol electrooxidation
palladium
deoxyribonucleic acid
functionalization
catalyst
