摘要
以Al(NO3)3·9H2O为铝源、尿素为沉淀剂,无模板水热法制备了单分散、尺寸均一的核桃状分级结构γ-AlOOH。用XRD、SEM、TEM和氮气吸脱附法对样品进行了表征,探讨了γ-AlOOH纳米结构形成机理,并研究了其对刚果红的吸附性能。实验结果表明,核桃状分级结构组成单元为纳米纤维,比表面积为101.3 m2/g,平均孔径为21.88 nm,并对刚果红表现出良好的吸附特性,吸附率和最大吸附量分别为98.8%和98.8 mg/g。
Monodispersed, uniform, and walnut-like hierarchical structures T-A1OOH was synthesized through a template-free hydrotbermal synthesis using aluminum nitrate （Al（ NO3 ）3 · 9H2O） as aluminum source and urea （CO （NH2 ）2 ） as mineralizers. The obtained samples were characterized by X-ray powder diffraction （XRD）, scanning electron microscopy （SEM）, transmission electron microscopy （TEM） and N2 adsorption/desorption technique. The possible formation mechanism of the walnut-like γ-AlOOH was proposed based on the experimental results. In addition, the adsorption performance of hierarchical γ-AlOOH for Congo red was studied. Experiment results indicate that the obtained walnut- like hierarchical structures γ-AlOOH structure was assembled by nanowires and exhibited a BET surface area of 101. 3 m2/g and an average pore widths of 21. 88 nm. The hierarchical γ-AlOOH showed excellent adsorption properties for Congo red （CR） with adsorption rate and maximum adsorption capacity of 98.8% and 98.8 mg/g, respectively.
出处
《人工晶体学报》
EI
CAS
CSCD
北大核心
2014年第5期1274-1279,共6页
Journal of Synthetic Crystals
基金
国家自然科学基金(51102289
61106126)
重庆理工大学研究生创新基金(YCX2013211)
关键词
勃姆石
核桃状结构
水热法
吸附
分等级结构
Boehmite
walnut-like
hydrothermal method
adsorption
hierarchical structure
