摘要
以梧桐木屑为原料,采用湿混法与一定量KOH搅拌并干燥,在氮气氛围下高温活化制备生物质活性炭。选取工艺优化后的活性炭掺杂铁氮元素,二次高温煅烧后形成Fe-N-C型非贵重金属催化剂。得出木屑生物质活性炭在活化温度为800℃,碱料比1∶3下比表面积为2051.8 m2·g-1,总孔容为1.23 cm3·g-1;通过进一步掺杂铁氮元素获得的催化剂材料拥有良好的ORR(氧还原反应)活性(初始电位-0.03 V、半波电位-0.10 V和极限电流4.2 mA/cm2)、耐甲醇性和稳定性,可以在能源领域中被广泛的应用。
A novel Fe-N-C type non-precious metal catalyst was developed.First,the activated carbon was synthesized from sycamore sawdust and KOH by conventional calcination in N2 atmosphere;second,the activated carbon powder,with an activation temperature of 800℃,a specific surface area of 2051.8 m2·g-1,a porosity of 1.23 cm3·g-1 and co-doped with Fe and N via chemical route,was calcined;and finally the microstructures and catalysis behavior of the new Fe-N-C catalyst was characterized with XRD,EDS,XPS,SEM,and electrochemical workstation.The results show that the newly-developed Fe-N-C catalyst exhibited good oxygen reduction reaction(ORR) activity,at an initial potential of-0.03 V,a half-wave potential of-0.10 V and a limiting current of 4.2 mA/cm2.Moreover,the stable Fe-N-C catalyst displayed a strong methanol tolerance.We suggest that the new catalyst be of some technological interest in energy industry.
作者
王文泉
邢献军
李珊
宋雨蔷
Wang Wenquan;Xing Xianjun;Li Shan;Song Yuqiang(School of Chemistry and Chemical Engineering,Hefei University of Technology,Hefei 230009,China;Institute of Advanced Energy Technology&Equipment,Hefei University of Technology,Hefei 230009,China;National City Energy Measurement Center(Anhui),Hefei 230051,China)
出处
《真空科学与技术学报》
EI
CAS
CSCD
北大核心
2020年第3期273-279,共7页
Chinese Journal of Vacuum Science and Technology
基金
北京市教育委员会市属高校创新能力提升计划项目(J2014QTXM0204)
安徽省重点研究与开发计划项目(1704a07020087)
安徽省科技计划项目(2013AKKG0398)。
