Acta Phys. -Chim. Sin. ›› 2010, Vol. 26 ›› Issue (01): 259-264.doi: 10.3866/PKU.WHXB20100122

• PHYSICAL CHEMISTRY OF MATERIALS • Previous Articles    

Assembly, Structure and Properties of Acid Orange 7-Pillared Zn/Al Hydrotalcite

HE Shu-Heng, PU Min, LI Jun-Nan, HE Jing, EVANS David G.   

  1. State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, P. R. China
  • Received:2009-07-16 Revised:2009-10-04 Published:2009-12-29
  • Contact: PU Min E-mail:pumin@mail.buct.edu.cn

Abstract:

Acid orange 7 (AO7)-pillared Zn/Al layered double hydroxides (Zn/Al-AO7 LDHs) were successfully synthesized using the co-precipitation method. In this experiment, synthetic parameters such as the pH value and the ratios of raw materials were varied to study their influences on the structure of Zn/Al-AO7 LDHs. Sample characterization was carried out using X-ray diffraction (XRD), thermal analysis (TG-DTA), and Fourier transform infrared (FT-IR) spectroscopy. The molecular geometries of the Zn/Al-AO7 LDHs model were calculated at the B3PW91/6-31G(d, p) level and the gallery heights were 2.33 nm, which agreed well with the experimental results. Formamide was chosen as a solvent for the layered double hydroxide delamination experiment. XRD patterns showed that all the layers had been delaminated.

Key words: Density functional theory, Zn/Al-LDHs, Acid orange 7, Delamination, Quantumchemistry calculation

MSC2000: 

  • O641