基于软模板的三维多孔氮掺杂石墨烯的合成及其对氧化原氧活性的促进作用
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- 英文论文题名：A simple soft-templating synthesis strategy for three-dimensional porous N-doped graphene with enhanced oxygen reduction reaction activity
- 论文作者：庹爱雪 ; 刘元 ; 金小君 ; 刘鸿
- 英文论文作者：Ai-Xue Tuo ; Yuan Liu ; Xiao Jun Jin ; Hong Liu ; Chongqing institute of green and intelligent Technology ; Chinese Academy of Sciences
- 年：2016
- 作者机构：中国科学院重庆绿色智能技术研究院;
- 论文关键词：氮掺杂石墨烯 ; 模板法 ; 氧还原活性 ; 微生物燃料电池
- 英文论文关键词：N-doped graphene ; soft template ; oxygen reduction activity ; microbial fuel cell
- 会议召开时间：2016-07-01
- 会议录名称：中国化学会第30届学术年会摘要集-第二十九分会：电化学材料
- 语种：中文
- 分类号：TQ127.11;O643.36
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第二十九分会 ; 电化学材料
- 会议地点：中国辽宁大连
- 主办单位：中国化学会
- 学会名称：中国化学会
- 页数：1
- 文件大小：277k
- 原文格式：D
- 会议级别：全国
摘要
以十六烷基三甲基溴化铵(CTAB)为软模板,采用简单易行的方法制备出具有高的氧还原催化活性的三维多孔氮掺杂石墨烯(3-D NG),其具体合成方案如图1所示。通过优化CTAB与GO的质量比,得到比表面积高达615.2 m~2g~(-1)的材料(CTAB-NG-15)。XRD、Raman、XPS分析结果表明3-D NG具有优良的特性,该材料能促进四电子的氧还原过程,中性介质中氧还原电子数为3.88±0.10,其作用可替代商用的Pt/C材料。将CTAB-NG-15应用于微生物燃料电池体系,其电压输出、库伦效率、最大产能密度都相对理想。
The porous three-dimensional NG(3-D NG) was obtained by a simple and effective method with cetyltrimethyl ammonium bromide(CTAB) as soft template. By optimizing the mass ratio of CTAB and GO, one kind of 3-D NG, denoted as CTAB-NG-15, was obtained, which exhibits a well-developed porous structure with a high surface area of 615.2 m~2g~(-1). Results of XRD, Raman spectroscopy, and XPS analyses demonstrate the superior property of 3-D NG, which enables a four-electron ORR pathway, with an actual electron transfer number of 3.88±0.10 in neutral medium and a comparable activity to that of commercial Pt/C. The comparable performance of CTAB-NG-15, which is a cathode electrocatalyst in microbial fuel cells, is preserved in terms of voltage output, coulombic efficiency, and maximum power density.
The porous three-dimensional NG(3-D NG) was obtained by a simple and effective method with cetyltrimethyl ammonium bromide(CTAB) as soft template. By optimizing the mass ratio of CTAB and GO, one kind of 3-D NG, denoted as CTAB-NG-15, was obtained, which exhibits a well-developed porous structure with a high surface area of 615.2 m~2g~(-1). Results of XRD, Raman spectroscopy, and XPS analyses demonstrate the superior property of 3-D NG, which enables a four-electron ORR pathway, with an actual electron transfer number of 3.88±0.10 in neutral medium and a comparable activity to that of commercial Pt/C. The comparable performance of CTAB-NG-15, which is a cathode electrocatalyst in microbial fuel cells, is preserved in terms of voltage output, coulombic efficiency, and maximum power density.
引文
[1]Liu,Y,;Liu H.;Wang,C.;Hou,S,X,;and Yang,N.Environ.Sci.Technol.,2013,47:13889.
[2]Guo,J.,X.;Zhang,T.;Hu,C,G.;and Fu,L.Nanoscale,2015,7:1290.
[2]Guo,J.,X.;Zhang,T.;Hu,C,G.;and Fu,L.Nanoscale,2015,7:1290.