碳化钨/石墨烯气凝胶的合成及其电催化性能  

Synthesis and electrocatalysis performance of WC/graphene aerogel

作　　者：刘军[1] 贺婉霞 张大为[2] 吕晓萌[2] 

机构地区：[1]江苏大学环境与安全工程学院,镇江212013 [2]江苏大学化学化工学院,镇江212013

出　　处：《化工新型材料》2016年第11期240-242,共3页New Chemical Materials

基　　金：国家自然科学基金项目(21003065)

摘　　要：采用氧化石墨为前驱体,甲醛和间苯二酚为碳源,钨酸钠作为碱性钨源及反应的催化剂,首先通过溶胶-凝胶反应合成了有机湿凝胶,后经冷冻干燥和高温焙烧/原位碳化制备了碳化钨/石墨烯气凝胶材料。对样品进行了X-射线粉末衍射、傅里叶红外光谱、透射电镜、差热-热重及比表面积和孔径分析,考察了样品的微观结构、热稳定性、表面官能团和孔隙结构等性质。以对硝基苯酚为底物,探讨了复合材料的电催化性能。Using graphene oxide as precursor,formaldehyde and resorcin as carbon source,sodium tungstate as tung- sten source and catalyst, organic gel was obtained by sol-gel reaction. After freeze drying and high temperature calcination, three-dimensional network tungsten carbide/graphene aerogels were formed by in situ carburization. X-ray powder diffrac- tion,fourier infrared spectrum analysis, transmission electron microscopy, differential thermal-thermogravimetry, specific surface area and pore size were analyzed. The microstructure of samples, thermal stability, hydrophobicity, surface function- al groups and the crystal structure were investigated in detail. The activity of prepared composites was explored by testing electrocatalytic reduction of nitrobenzene.

关 键 词：碳化钨/石墨烯 气凝胶 原位碳化 对硝基苯酚 

分 类 号：TQ427.26[化学工程]