Qiu, D. (Dong), Guerry, Paul, Knowles, Jonathan C., Smith, Mark E. and Newport, Robert J.. (2008) Formation of functional phosphosilicate gels from phytic acid and tetraethyl orthosilicate. Journal of Sol-Gel Science and Technology, Vol.48 (No.3). pp. 378-383. ISSN 0928-0707

Full text not available from this repository.

Abstract

Phosphosilicate gels with high phosphorus content (P mol% > Si mol%) have been prepared using phytic acid as the phosphorus precursor, with tetraethyl orthosilicate (TEOS). It is shown that the structure of phytic acid is maintained in both the sols and those gels dried at a low temperature (i.e. <= 120 degrees C). Solid state Si-29 and P-31 NMR suggest that the gel network is primarily based on tetrahedral silicon and that phosphorus is not chemically incorporated into the silicate network at this point. X-ray diffraction shows the gel to be amorphous at low temperatures. After heat treatment at higher temperatures (i.e. up to 450 degrees C), P-O-Si linkages are formed and the silicon coordination changes from tetrahedral to octahedral. At the same time, the gel crystallizes. Even after this partial calcination,P-31 NMR shows that a large fraction of phytic acid remains in the network. The function of phytic acid as chelating agent is also maintained in the gels dried at 120 degrees C such that its ability to absorb Ca2+ from aqueous solution is preserved.

[error in script] [error in script]

Item Type:	Journal Article
Subjects:	T Technology > TP Chemical technology
Divisions:	Faculty of Science > Engineering Faculty of Science > Physics
Library of Congress Subject Headings (LCSH):	Colloids, Silicon, Phosphorus -- Isotopes, Nuclear magnetic resonance, Calcium -- Absorption and adsorption, Phytic acid
Journal or Publication Title:	Journal of Sol-Gel Science and Technology
Publisher:	Springer New York LLC
ISSN:	0928-0707
Date:	December 2008
Volume:	Vol.48
Number:	No.3
Number of Pages:	6
Page Range:	pp. 378-383
Identification Number:	10.1007/s10971-008-1818-9
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Restricted or Subscription Access
Funder:	Engineering and Physical Sciences Research Council (EPSRC), University of Warwick
Grant number:	EP/C004671 (EPSRC), EP/C004698 (EPSRC), EP/C515560 (EPSRC)
References:	1. Nogami M, Daiko Y, Goto Y, Usui Y, Kasuga T (2003) J Sol-Gel Sci Technol 26:1041 2. Daiko Y, Kasuga T, Nogami M (2002) Chem Mater 14:4624 3. Nogami M, Miyamura K, Abe Y (1997) J Electrochem Soc 144:2175 4. D’Apuzzo M, Aronne A, Esposito S, Pernice P (2000) J Sol-Gel Sci Technol 17:247 5. Aparicio M, Klein LC (2003) J Sol-Gel Sci Technol 28:199 6. Matsuda A, Kanzaki T, Tadanaga K, Tatsumisago M, Minami T (2002) Solid State ionics 154–155:687 7. Hench LL (1991) J Am Ceram Soc 74:1487 8. Saravanapavan P, Jones JR, Pryce RS, Hench LL (2003) J Biomed Mater Res, Part A 66A:110 9. Roman J, Padilla S, Vallet-Regi M (2003) Chem Mater 15:798 10. Cerruti M, Magnacca G, Bolis V, Morterra C (2003) J Mater Chem 13:1279 11. Krawietz TR, Lin P, Lotterhos KE, Torres PD, Barich DH, Clearfield A, Haw JF (1998) J Am Chem Soc 120:8502 12. Fougret CM, Holderich WF (2001) Appl Catal, A 207:295 13. Tian F, Pan L, Wu LX, Wu F (1988) J Non-Cryst Solids 104:129 14. Woignier T, Phalippou J, Zarzycki J (1984) J Non-Cryst Solids 63:117 15. Szu SP, Klein LC, Greenblatt M (1992) J Non-Cryst Solids 143:21 16. Livage J, Barboux P, Vanderborre MT (1992) J Non-Cryst Solids 147:18 17. Fernandez-Lorenzo C, Esquivias L, Barboux P, Maquet J, Taulelle F (1994) J Non-Cryst Solids 176:189 18. Wang L, Samuels WD, Exarhos GJ, Lee BI, Cao Z (1998) J Mater Chem 8:165 19. Vallet-Regi M, Salinas AJ, Roman J, Gil M (1999) J Mater Chem 9:515 20. Clayden NJ, Esposito S, Pernice P, Aronne A (2001) J Mater Chem 11:936 21. Carta D, Pickup DM, Knowles JC, Smith ME, Newport RJ (2005) J Mater Chem 15:2134 22. Aronne A, Turco M, Bagnasco G, Pernice P, Di Serio M, Clayden NJ, Marenna E, Fanelli E (2005) Chem Mater 17:2081 23. Pickup DM, Guerry P, Moss RM, Knowles JC, Smith ME, Newport RJ (2007) J Mater Chem 17:4777 24. Munoz JA, Valiente M (2003) Anal Chem 75:6374 25. Xu A, Yu Q, Dong W, Antonietti M, Colfen H (2005) Adv Mater 17:2217 26. Aizenberg J, Lambert G, Addadi L, Weiner S (1996) Adv Mater 8:222 27. Addadi L, Raz S, Weiner S (2003) Adv Mater 15:959 28. Braga D (2003) Angew Chem Int Ed 42:5544 29. Politi Y, Arad T, Klein E, Weiner S, Addadi L (2004) Science 306:1161 30. Samba-Fouala C, Mossoyan J, Mossoyan-Deneux M, Benlian D, Chaneac C, Babonneau F (2000) J Materi chem 10:387 31. Ali AF, Mustarelli P, Magistris A (1998) Mater Res Bull 33:697 32. Clayden NJ, Aronne A, Esposito S, Pernice P (2004) J Non- Crystal Solids 345&346:601 33. Clayden NJ, Pernice P, Aronne A (2005) J Non-Crystal Solids 351:195 34. Weeding TL, de Jong BHWS, Weeman WS, Aitken BG (1985) Nature 318:352 35. Stishov SM, Popova SV (1961) Geokhimiya 10:837 36. Cao Z, Lee BI, Samuels WD, Wang LQ, Exarhos GJ (1998) J Mater Res 13:1553 37. Dupree R, Holland D, Mortuza MG (1987) Nature 328:416 38. Miyahe D, Takahashi M, Tokuda T, Yoko T, Uchino T (2005) Phys Rev B 71:172202 39. Coelho C, Azais T, Bonhomme-Coury L, Maquet J, Bonhomme C (2006) Comptes Rend Chim 9:472 40. Smith JW, Blackwell CS (1983) Nature 303:223 41. MacKenzie KJD, Smith ME (2002) Multinuclear Solid-State NMR of Inorganic Materials. Pergamon, Oxford 42. Laczka M, Ciecinska M (1994) J Sol-Gel Sci Technol 3:219
URI:	http://wrap.warwick.ac.uk/id/eprint/29121

Data sourced from Thomson Reuters' Web of Knowledge

Request changes to a record

Actions (login required)

View Item