QIAO Yanhui ¹, GU Shijia ², WANG Minghui ³, TIAN Yuan ¹, LI Huan ¹, JIANG Wan ^1,2
(1. State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University, Shanghai 201620, China; 2.
Institute of Functional Materials, Donghua University, Shanghai 201620, China;
3. Testing& Analysis Center, Donghua University, Shanghai 201620, China)

Abstract: BaAl₂O₄ is an excellent NOx storage catalyst material. At the same time, it is also an ideal fluorescent matrix material and draws extensive attention. However, the general BaAl₂O₄ powder is limited by the relatively small surface area. Although the nanoparticles have larger surface area, the defect of their aggregation severely limits their applications. In this study, BaAl₂O₄ powder was synthesized by a simple soft template method, which not only had a good chemical stability, but also had a relatively large surface area. After characterizing by XRD, BET and TEM, the powder proved exactly the BaAl₂O₄ with a larger surface area. The synthesis method in this paper has high production efficiency and energy efficiency, and the powder is likely to replace the commonly-used powder on particular occasions.

Key words: BaAl₂O₄ ; soft template method; specific surface area