Preparation of Flower-Shaped Barium Sulfate Nanoparticles in the Presence of DTAB

Abstract

The effect of various concentration of dodecyltrimethylammonium bromide (DTAB) on the precipitation of barium sulfate (BaSO₄) was investigated. Flower-shaped BaSO₄ nanoparticles were synthesized in the presence of DTAB. Scanning electron microscope (SEM) and x-ray diffraction (XRD) were used to characterize the morphologies and structures of BaSO₄ crystals. On the basis of the characterizations, a possible formation mechanism was proposed.

Keywords:

• Barium sulfate
• dodecyltrimethylammonium bromide (DTAB)
• flower-shaped

Acknowledgements

The authors are grateful to the National Basic Research Program (No. 2007CB808004 and 2009CB930101), Natural Scientific Foundation of Shandong Province of China (No. Z2007B03), and the doctoral fund of the Ministry of Education of China (New Teachers Fund) (No. 070422047).