文献类型：期刊文献

中文题名：纳米碳纤维的表面性质和微结构对氧还原催化活性的影响

英文题名：Effects of Surface Properties and Microstructures of Carbon Nanofibers on Their Electrocatalytic Activity for Oxygen Reduction Reaction

作者：姜悦[1];覃远航[1];钮东方[1];张新胜[1];周兴贵[1];孙世刚[2];袁渭康[1]

机构：[1]华东理工大学化学工程国家重点实验室,上海200237;[2]厦门大学固体表面物理化学国家重点实验室,厦门361005

年份：2012

卷号：33

期号：5

起止页码：1001

中文期刊名：高等学校化学学报

外文期刊名：Chemical Journal of Chinese Universities

收录：CSTPCD;;Scopus;WOS:【SCI-EXPANDED(收录号:WOS:000304432500024)】；北大核心:【北大核心2011】；CSCD:【CSCD2011_2012】；

基金：国家自然科学基金(批准号:21073061);厦门大学固体表面物理化学国家重点实验室开放基金资助

语种：中文

中文关键词：纳米碳纤维;氧还原反应;微结构;表面性质;电催化性质

外文关键词：Carbon nanofibers（CNFs）; Oxygen reduction reaction; Microstructure; Surface property; Electrocatalytic property

摘要：采用超声处理的方法分别对管式纳米碳纤维(t-CNF)和鱼骨式纳米碳纤维(f-CNF)进行了表面化学处理.XPS结果表明,在混酸(浓硫酸+浓硝酸)和氨水中进行超声化学处理可以在CNF表面分别引入含氧官能团和含氮官能团.电化学测试结果表明,2种不同微结构CNF的氧还原催化活性都遵循相同的趋势,即CNF-PTwo types of carbon nanofibers（CNFs）,tubular CNFs（t-CNFs） and fish-bone CNFs（f-CNFs） were synthesized and the effects of surface properties of CNFs on their electrocatalytic activity for oxygen reduction reaction（ORR） in alkaline media were investigated.Oxygen- and nitrogen-containing functional groups were introduced onto the CNF surface by sonochemical oxidation in mixed acids（concentrated sulfuric acid and nitric acid） and ammonia,respectively.The ORR activities of the CNF catalyst were measured in an oxygen-saturated 0.1 mol/L KOH electrolyte solution by rotating disk electrode（RDE） technique.The RDE results show that the electrocatalytic activities of the two types of CNFs increase in the same sequence untreated CNFs oxygen-containing CNFs nitrogen-containing CNFs,while the f-CNFs-based catalysts have higher electrocatalytic activities for ORR than t-CNFs-based counterparts.The results indicate that both the surface properties and the microstructures of CNFs have effects on the electrocatalytic activity of CNFs for ORR,although the former may have a dominant effect.