摘要
以氨水为氮源,采用简便的超声法将氮元素掺杂进石墨烯,通过溶胶-凝胶法制备WO3/氮掺杂石墨烯复合材料,经Raman、XPS、TEM等表征对其进行结构和形貌分析,并在光电流平台上测试其对NO2气体的室温气敏性能。结果表明,对石墨烯进行氮掺杂后形成新的C-N键,石墨烯表面缺陷增加,导电性能提升,WO3/氮掺杂石墨烯复合材料表现出优异的室温气敏特性。
Using ammonia as nitrogen source, N-doped graphene（N-GR） was prepared by ultrasonic meth od,then employed as starting material to form WO3/N-GR composite. The WO3/N-GR composite was charac- terized by Raman,XPS,TEM to identify the crystal phase,morphology and structure. The gas sensing proper- ties of WO3/N-GR composite on NO2 gas was measured by light corrent platform system. Results showed that, the new C--N bonds was formed,the amounts of defects in graphene surface increased,the conductivity of gra- phene improved,and WO3/N-GR composite had the superior room-temperature gas sensing properties.
出处
《化学与生物工程》
CAS
2015年第8期19-22,共4页
Chemistry & Bioengineering
基金
国家重点基础研究发展计划资助项目(2009CB939702
2009CB939705)
国家自然科学基金资助项目(50772040
50927201)
