The Malaysian Journal of Analytical Sciences Vol 11 No 1 (2007): 1 – 7

 

 

FORMATION OF ZINC ALUMINIUM LAYERED DOUBLE HYDROXIDES -4(2,4-DICHLOROPHENOXY)BUTYRATE NANOCOMPISITES BY DIRECT AND INDIRECT METHODS

 

Norhayati Hashim, Mohd Zobir Hussein, Asmah Hj. Yahaya and Zulkarnain Zainal

 

Advanced Materials and Nanotechnology Laboratory, Institute of Advanced Technology (ITMA),

and

 Multifunctional Nanomaterials for Industrial Application (MULIA) Research Group,

Department of Chemistry, Faculty of Science,

Universiti Putra Malaysia, 43400 Serdang Selangor.

 

Abstract

4-(2,4-dichlorophenoxy)butyric   acid  (DPBA)  was  intercalated  between  the  interlamellae  of  Zn/Al   layered   double hydroxides (LDHs). Two methods of intercalation were adopted, (a) direct synthesis by co-precipitation of metal nitrates and DPBA and (b) ion exchange of LDH nitrate with the organic anion. The resulting materials were characterized by x-ray diffraction and infrared spectroscopy. Both methods afford well ordered nanocomposite materials at the same pH and ratio but at different   concentrations. The x-ray diffraction patterns showed that the interlayer spacing distances increased from 8.9 Å to 28.7 Å and 29.4 Å for DPBA-LDH synthesized by ion exchange method and by direct method, respectively. The optimum condition were obtained at DPBA concentration of 0.2 M by direct co-precipitation method compared to 0.025 M by ion exchange method.

 

Keywords: 4-(2,4-dichlorophenoxy)butyric acid, layered double hydroxides, co-precipitation,

on exchange, nanocomposite.

 

References

1.         Cavani, F., Trifiro, F. and Vaccari, A. 1991. Hydrotlcite-type anionic clays: preparation, properties and application. Catal.Today.11, 173-301

2.         Deroy, A., Forano, C., Besse, J. P. 1992. Anionic clays-trends in pillaring chemistry in Ocelli, M. L., Robson, H. E ( Eds) Nostrand Reinhold, New York. Chapter 2. pg 108.

3.         Martina, M., Klaus, B. and Lagaly, G. 1990. Anion-exchange reaction of layered double hydroxide.  Inorganic Chem . 29. 5201-5207.

4.         Costa, F. R., Goad, M. A., Wagenknecht, U. and Heinrich, G. 2005. Nanocomposites based on polyethylene and Mg-Al layered double hydroxides: Synthesis and characterization. Polymer . 46. 4447-4453.

5.         Vial, S., Forano, C., Shan, D., Mousty, C., Barhoumi, H., Martelet, C. and Jaffrezic, N. 2006.  Nanohybrid-layered double hydroxides/urease material: Synthesis and application to urea biosensor.  Materials Science and Engineering C. 26. 387-393.

6.         Kakiucchi,  N.,  Nishimura,  T.,  Inoue,  M.  and  Uemura,  S.  2000.  Palladium(II)  supported  by  hydrotalcite[PD(II)- hydrotalcite]-catalyzed  selective  oxidation  of  alcohols  using  molecular  oxygen.  Fourth  International  Electronic Conference on Synthetic Organic Chemistry (ECSOC-4).1-30.

7.         Khan. A. I. and O’Hare, D. 2002. Intercalation chemistry of layered double hydroxides: Recent  developments and applications. Journal of Materials Chemistry. 12. 3191-3198.

8.         Hussein, M. Z., Yahaya, A., Zainal, Z. and Kian, L. H. 2005. Nanocomposite-based controlled release formulation of an herbicides, 2,4-dichlorophenoxyacetate  incapsulated  in  zinc-aluminium- layered  double  hydroxide.  Science and Technology of Advanced Materials .6.956-962.

9.         Newman, P. S., Cristina, T. D., Coveney, P. V. and Jones, W. 2002. Molecular Dynamics Simulation of Cationic and Anionic Clays Containing Amino Acids. Langmuir . 18. 2933-2938.

10.      Radha. A. V., Kamath, P. V. and Shikuvakumara, C. 2005. Mechanism of the anion exchange reactions of the layered double hydroxides ( LDHs) of Ca and Mg with Al. Solid State Sciences. 7. 1180-1187.

11.      Aisawa, S., Takahashi, S., Ogasawara, W. Umetsu, Y. and Narita, E. 2001. Direct intercalation of amino acids into layered double hydroxides by coprecipitation. Journal of Solid State Chemistry. 162. 52-62.

12.      Chen, Z. Z., Shi, E. W. Li, W. J., Zheng, Y. Q., Zhuang, J. Y.,  Xio, B. and Tang, L. A. 2004. Preparation of nanosized cobalt aluminate powders by a hydrothermal method. Material Science and Engineering B. 107(2). 217-223.

13.      Lakraimi, M., Legrouri, A., Barroug, B. A., Royc, A. D. and Bes se, J. P. 2000. Preparation of a new stable hybrid material  by  chloride-2,4-dichlorophenoxyacetate  ion  exchange  into  the  zinc-aluminium-chloride  layered  double hydroxide. Journal of Material Chemistry. 10. 1007-1011.

14.      Dupin, J. C., Martinez, H., Guimon, C., Dumitriu, E. and Fecther, I. 2004. Intercalation compounds of Mg-Al layered double  hydroxides  with  dicphlophenac:  different  methods  of  preparation  and  physico-chemical characterization. Applied Clay Science. 27.

15.      Miyata, S. 1980. Physico-chemical properties of synthesis hydrotalcite in relation to composition.  Clays  and Clay Mineral. 28. 50-56.

16.      Zhang, L. F., Evan, D. G., Forano, C., Duan, X. 2004. Structure and thermal evolution of Mg-Al  layered double hydroxides containing interlayer organic glyphosate anion. Thermochim. Acta. 424. 15-23

17.   Feng, Y., Li, D., Wang, Y., Evans, D. G. and Duan, X. 2006. Synthesis and characterization of a  UV  absorbent - intercalated Zn-Al layered double hydroxide. Polymer Degradation and Stability. 91. 789-794.

18.      Ragavan, A., Khan, A. I. and O’Hare, D. 2006. Intercalation and controlled release of 2,4-dichlorophenoxyacetic acid using rhombohedral [LiAl2(OH)6]Cl.xH 2O. Journal of Physics and Chemistry of Solid. 67(5-6). 983-986.

19.      Sing, K.  S.  W., Everrett, D. H., Haul, R. A. W., Moscou, L.,Picrotti, R. A., Rouquerol, J and Siemieniewska, J. 1985. Reporting physisorption data for gas/solid systems with special reference to the determination of  surface  area and porosity.  Pure and Application Chemistry. 57(4). 603-619.