Abstract
Reverse micelles solution of water and cyclohexane containing either cetyltrimethylammonium bromide (CTAB) or polyoxyethylene-8-dodecyl ether (C12E8) surfactants and n-pentanol as co-surfactant have been used as organized reaction microenvironments for monetite (dicalcium phosphate anhydrous, DCPA) precipitation. Well-crystallized monetite nanoparticles with various morphologies such as spheres, nanofibers and bundles of nanowires were obtained in CTAB reverse micelles solution. The molar ratio of water and surfactant (W o) and the molar ratio of co-surfactant and surfactant (P o) have great influence on the structure and morphology of the final products. A generalized mechanism for the growth of monetite in reverse micelles is proposed, in which the interaction between the surfactant molecules and PO 3−4 ions leads to the formation of a surfactant/CaHPO4 complex. It is because of this central complex that the further fusion with reactant ions containing reverse micelles will occur only in one direction. Changing the content of water and co-surfactant has great influence on the morphology of reverse micelles and on the interaction between the surfactant/CaHPO4 complex leading to a fine tuning of the morphology of products. By contrast, lacking of this interaction in the C12E8 system only tablet amorphous calcium phosphate can be formed.
Similar content being viewed by others
References
Daudon M, Donsimoni R, Hennequin C, Fellahi S, Le MG, Paris M, Troupel S, Lacour B (1995) Urol Res 23:319
Werness PG, Bergert JH, Smith LH (1982) J Cryst Growth 53:166
DeGroot K (1983) Bioceramics of calcium phosphate. Florida CRC Press, Boca Raton
Williams DF, (1985) Biocompatibility of tissue analogs, vol 11. Florida CRC Press, Boca Ration
Shwartz Z, Lohmann CH, Oefinger J, Bonewald LF, Dean DD, Boyan BD (1999) Adv Dent Res 13:38
Andrés-Vergés M, Fernández-Gpmzález C, MartÍnez-Gallego M (1998) J Euro Ceram Soc 18:1245
Huang LM, Wang HT, Wang ZB, Mitra AP, Zhao DY, Yan YS (2002) Chem Mater 14:876
Yin AJ, Li J, Jian W, Bennett AJ, Xu JM (2001) Appl Phys Lett 79:1039
Duan X, Lieber XM (2000) Adv Mater 12:298
Jana NR, Gearheart L, Murphy CJ (2001) Adv Mater 13:1389
Sui XM, Chu Y, Xing SX, Yu M, Liu CZ (2004) Mater Lett 58:1255
Hirai T, Asada Y, Komasawa I (2004) J Colloid Interf Sci 276:339
Uskokovic V, Drofenik M, Ban I (2004) J Magn Magn Mater 284:294
Liu Y, Zhang Z (2002) In: Wang ZL (ed) Handbook of nanophase and nanostructured materials-synthesis. Tsinghua University Press, Bei Jing, p 9
Pileni MP (1993) J Phys Chem 97:6961
Clark S, Fletcher PDI, Ye X (1990) Langmuir 6:301
Senger B, Brès EF, Hutchison JL, Voegel JC, Frank RM (1992) Philos Mag A 65:665
Y Li, Li YD, Deng ZX, Zhuang J, Sun XM (2001) Inter J Inorg Mater 3:633
Faeder J, Ladanyi BM (2000) J Phys Chem B 104:1033
Törnblom M, Henriksson U (1997) J Phys Chem B 101:6028
Hopwood JD, Mann S (1997) Chem Mater 9:1819
Li M, Mann S (2000) Langmuir 16:7088
Jinawath S., Polchai D., Yoshimura M (2002) Mater Sci Eng C 22:35
Braun PV, Stupp SI (1999) Mater Res Bull 34:463
Curri ML, Agostinao A, Manna L, Monica MD, Catalano M, Chiavarone L, Spangnolo V, Lugará M (2000) J Phys Chem B 104:8391
Palazzo G, Lopez F, Giustini M, Colafemmina G, Ceglie A (2003) J Phys Chem B 107:1924
Sarda S, Heughebaert M, Lebugle A (1999) Chem Mater 11:2722
Acknowledgements
The authors acknowledge the financial supports for this study from National Natural Science Foundation of China (NSFC) Project Grant (50272021, 59932050, and 50472054), Natural Science Foundation Cooperative Project Grant of Guangdong (04205786). We also thank Dr. B. Léon for her helpful comments and suggestions.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Wei, K., Lai, C. & Wang, Y. Formation of monetite nanoparticles and nanofibers in reverse micelles. J Mater Sci 42, 5340–5346 (2007). https://doi.org/10.1007/s10853-006-0902-1
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10853-006-0902-1