摘要
采用甘蔗渣为生物质原料,浸渍环氧树脂后(两者质量比为2.5∶1)高温烧结制备了分级多孔木质陶瓷。使用XRD、SEM、TG等手段研究了木质陶瓷的物相组成、微观形貌和热稳定性,通过压汞法和氮吸附法分析了木质陶瓷从微米到纳米范围的分级多孔结构。研究结果表明,木质陶瓷主要由非石墨化碳层和微量的磷石英组成。木质陶瓷保留了甘蔗渣的管状孔洞,具有从宏孔到介孔分布的分级多孔结构。木质陶瓷的宏孔孔径分布主要在0.4～6μm之间,BET表面积最高达39.7m2/g。随着烧结温度的升高,木质陶瓷的BET表面积、介孔体积和平均孔径都降低。
Hierarchical porous woodceramics were prepared using sugarcane bagasse as biomass material impregnated with epoxy resin （mass ratio of sugarcane bagasse to epoxy resin=2.5 ： 1） followed by sintering at high temperatures. The phase composition, morphological evolution and thermal stability of the woodceramics were observed by XRD, SEM and TG, respectively. The hierarchical porous structure from micrometer to nanometer scale was analyzed by mercury intrusion and N2 adsorption method. Experimental results show that the woodceramics are composed of the non-graphitizing carbon sheets and a small amount of tridymite. The woodceramics retain the tubular pores of sugarcane bagasse and have the hierarchical porous structure containing both mesopores and macropores. The macropore size distribution of the woodceramics is in the range of 0.4-6μm, and the BET surface area is up to 39.7m^2/g. With the increase of the temperature, the BET surface area, mesopore volume and average pore diameter of the woodceramics decrease.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2013年第8期1191-1194,共4页
Journal of Functional Materials
基金
江苏省材料摩擦学重点实验室开放基金资助项目(kjsmcx07005)
江苏省高校自然科学基金资助项目(08KJD430010)
江苏省普通高校研究生科研创新计划资助项目(CXZZ11-0558)
江苏大学高级专业人才科研启动基金资助项目(09jdg033)
常熟市科技发展规划资助项目(CG201005)
关键词
无机非金属材料
木质陶瓷
甘蔗渣
生物形态
分级多孔结构
inorganic non-metallic materials
woodceramics
sugarcane bagasse
biomorphic
hierarchical porousstructure
