摘要
通过同轴静电纺丝技术制备了二氧化钛中空纳米纤维,并通过原位还原浸渍法制备了二氧化钛中空纳米纤维负载CoB催化剂。热重分析表明,二氧化钛中空纳米纤维前驱体需要600℃以上的高温焙烧处理才能得到无机氧化物二氧化钛纳米纤维。扫描电镜表征表明,二氧化钛纳米纤维经过焙烧处理以后其表面形貌出现了明显变化,纳米纤维表面变得粗糙,纳米纤维变得更细,同时明显观察到纳米纤维中空微结构。该纳米纤维负载的CoB催化剂在硼氢化钠水解制氢中具有很高的催化活性[2 650.0 mL/(min.g)],显示出该催化剂具有较好的应用前景。
TiO2 hollow nanofiber was prepared via coaxial electrospinning technique and TiO2 hollow nanofiber supported CoB catalyst was synthesized by in-situ reduction impregnation.TG analysis revealed that TiO2 hollow nanofiber precursors should be sintered above 600 ℃ to obtain pure inorganic TiO2 nanofiber.SEM characterization showed that a remarkable mor- phological change of TiO2,such as rougher of nanofiber surface and thinner nanofiber etc.eould be found after thermal treat- ment and hollow nanofiber microstructure of TiO2 could be obviously observed.CoB/TiO2 catalyst was used in hydrogen pro- duction from NaBH4 hydrolysis which exhibited highly catalytic activity [2 650.0 mL/（min ·g）] due to high specific surface area.Experimental results demonstrated that CoB/TiO2 catalyst had a promising potential in application.
出处
《无机盐工业》
CAS
北大核心
2013年第3期55-57,共3页
Inorganic Chemicals Industry
基金
国家自然科学青年基金(21201096)
辽宁省教育厅研究基金项目(L2010242)资助
