Preparation of uniform Au@SiO2 particles by direct silica coating on citrate-capped Au nanoparticles

Colloids and Surfaces A: Physicochemical and Engineering Aspects

Volumn 392, Issue 1, 2011, Pages 220-224

  Wu, Zhenzhu ^a   Liang, Jinglun ^a   Ji, Xiaohui ^a   Yang, Wensheng ^a  

^a JILIN UNIVERSITY   (China)

Author keywords

Colloid stability; Core shell; Noble metal nanoparticles; Silica; St ber method

Indexed keywords

COATINGS; COLLOID CHEMISTRY; COLLOIDS; NANOPARTICLES; SILICA; SILICON COMPOUNDS; SILVER;

AG NANOPARTICLE; AU NANOPARTICLE; CITRATE REDUCTION; COLLOID STABILITY; CORE-SHELL; NOBLE METAL NANOPARTICLES; PARTICLE SYNTHESIS; POOR STABILITY; SILICA COATINGS; WELL-DISPERSED;

GOLD;

CITRIC ACID; GOLD NANOPARTICLE; NANOPARTICLE; SILICON DIOXIDE; SILICONE DIOXIDE NANOPARTICLE; UNCLASSIFIED DRUG;

ARTICLE; CAPPING PHENOMENON; CHEMICAL MODIFICATION; CHEMICAL REACTION; COLLOID; CONCENTRATION (PARAMETERS); CONTROLLED STUDY; MATERIAL COATING; MOLECULAR STABILITY; PARTICLE SIZE; PRIORITY JOURNAL; REDUCTION; STOBER REACTION; SYNTHESIS;

EID: 82855172060     PISSN: 09277757     EISSN: 18734359     Source Type: Journal    
DOI: 10.1016/j.colsurfa.2011.09.059     Document Type: Article

References (24)

1. Halas N.J. Nanoscience under glass: the versatile chemistry of silica nanostructures. ACS Nano 2008, 2:179-183.
2. Stöber W., Fink A., Bohn E. Controlled growth of monodisperse silica spheres in micron size range. J. Colloid Interface Sci. 1968, 26:62-69.
3. Liu S.H., Han M.Y. Silica-coated metal nanoparticles. Chem. Asian J. 2010, 5:36-45.
4. Liz-Marzan L.M., Giersig M., Mulvaney P. Synthesis of nanosized gold-silica core-shell particles. Langmuir 1996, 12:4329-4335.
5. Ung T., Liz-Marzan L.M., Mulvaney P. Controlled method for silica coating of silver colloids. Influence of coating on the rate of chemical reactions. Langmuir 1998, 14:3740-3748.
6. Liu S.H., Han M.Y. Synthesis, functionalization, and bioconjugation of monodisperse, silica-coated gold nanoparticles: robust bioprobes. Adv. Funct. Mater. 2005, 15:961-967.
7. Nikhil R.J., Christopher E., Jackie Y.Y. Synthesis of water-soluble and functionalized nanoparticles by silica coating. Chem. Mater. 2007, 19:5074-5082.
8. Graf C., Vossen D.L.J., Imhor A., Blaaderen A.V. A general method to coat colloidal particles with silica. Langmuir 2003, 19:6693-6700.
9. Pastoriza-Santos I., Perez-Juste J., Liz-Marzan L.M. Silica-coating and hydrophobation of CTAB-stabilized gold nanorods. Chem. Mater. 2006, 18:2465-2467.
10. Mayya K.S., Gittins D.I., Caruso F. Gold-titania core-shell nanoparticles by polyelectrolyte complexation with a titania precursor. Chem. Mater. 2001, 13:3833-3836.
11. Kang S.M., Lee K.B., Kim D.J., Choi J.S. Biomimetic approach to the formation of gold nanoparticle/silica core/shell structures and subsequent bioconjugation. Nanotechnology 2006, 17:4719-4725.
12. Liu S.H., Zhang Z.H., Han M.Y. Nanometer-sized gold-loaded gelatin/silica nanocapsules. Adv. Mater. 2005, 17:1862-1866.
13. Israelachvili J. Intermolecular & Surface Forces 1997, Academic Press, London.
14. Zhang H., Wang D.Y. Controlling the growth of charged-nanoparticle chains through interparticle electrostatic repulsion. Angew. Chem. Int. Ed. 2008, 47:1-5.
15. Han X.G., James G., Lu Z.D., Yin Y.D. Role of salt in the spontaneous assembly of charged gold nanoparticles in ethanol. Langmuir 2011, 27:5282-5289.
16. Ji X.H., Song X.N., Li J., Bai Y.B., Yang W.S., Peng X.G. Size control of gold nanocrystals in citrate reduction: the third role of citrate. J. Am. Chem. Soc. 2007, 129:13939-13948.
17. Liang J.L., Lu Z.Y., Xu J.Q., Li J., Zhang H.M., Yang W.S. Incorporating anionic dyes into silica nanoparticles by using a cationic polyelectrolyte as a bridge. J. Mater. Chem. 2011, 21:1147-1152.
18. 2+ ion. Colloids Surf. A: Physicochem. Eng. Aspects 2008, 325:194-197.
19. Guan J., Li J., Guo Y., Yang W.S. Cooperative dual-stimuli-triggered aggregation of poly-l-histidine-functionalized Au nanoparticles. Langmuir 2009, 25:2679-2683.
20. 2+ detection. J. Am. Chem. Soc. 2004, 126:12298-12305.
21. Liu J., Lu Y. A highly sensitive and selective catalytic DNA biosensor for lead ions. J. Am. Chem. Soc. 2000, 122:10466-10477.
22. Bishop K.J.M., Wilmer C.E., Soh S., Grzybowski B.A. Nanoscale forces and their uses in self-assembly. Small 2009, 14:1600-1630.
23. a of the coating ligands. J. Am. Chem. Soc. 2011, 133:2192-2197.
24. 2 composite nanoparticles from primary silica particles. Colloids Surf. A: Physicochem. Eng. Aspects 2008, 317:450-456.