新型炭材料Issue(6)：454-460,7.
Co/MR氮掺杂炭气凝胶的制备、结构及氧还原性能
Synthesis of Co-loaded carbon aerogels for oxygen electro-reduction
摘要
Abstract
Melamine-resorcinol-formaldehyde ( MR) aerogels were prepared by the sol-gel polymerization of formaldehyde with melamine and resorcinol using NaOH as catalyst, followed by freeze-drying. Co-loaded carbon aerogels were obtained by impregna-ting the MR aerogels with Co( III) tert-butanol solution, followed by carbonization in N2 . The effects of the molar ratios of mela-mine to resorcinol ( M/R) , pH, Co content and carbonization temperature on the microstructure of the aerogels were investigated. It was found that the microstructure of the MR aerogels could be adjusted by the M/R ratio and pH. The mesopore size of the MR aer-ogels decreased with increasing pH and the mesopore size was in the range of 3-4nm when the M/R was 6:1. There were some gra-phitic nano-ribbons in Co-loaded carbon aerogels. The metal average particle size in the carbon aerogels increased from 5. 2 to 6. 2 nm when the carbonization temperature was increased from 700 to 900℃. The electrochemical properties of the Co-loaded car-bon aerogels as catalysts in the oxygen reduction reaction were evaluated by a rotating disc electrode technique in an O2-saturated 0. 5 mol/L H2 SO4 solution, and the catalysts showed a good electrocatalytic activity for the reaction.关键词
氮掺杂炭气凝胶/氧还原/非贵金属Key words
Nitrogen doped carbon aerogels/Oxygen reduction reaction/Non-noble metal分类
信息技术与安全科学引用本文复制引用
陈胜洲,杨旸,陈伟平,李良伟,邹汉波..Co/MR氮掺杂炭气凝胶的制备、结构及氧还原性能[J].新型炭材料,2013,(6):454-460,7.基金项目
国家自然科学基金(21076048) （21076048）
广东省科技计划项目(2009B01100022,2010B010900039)@@@@National Natural Foundation of China (21076048) （2009B01100022,2010B010900039）
Science and Technology Department of Guangdong Province Research Project (2009B01100022,2010B010900039) （2009B01100022,2010B010900039）
