On the stability of surfactant-free water-in-oil emulsions and synthesis of hollow SiO2 nanospheres

Colloids and Surfaces A: Physicochemical and Engineering Aspects

Volumn 372, Issue 1-3, 2010, Pages 55-60

  Horikoshi, Satoshi ^a   Akao, Yu ^a   Ogura, Taku ^b   Sakai, Hideki ^a   Abe, Masahiko ^a   Serpone, Nick ^c  

^a TOKYO UNIVERSITY OF SCIENCE   (Japan)

^b LION CORPORATION   (Japan)

^c UNIVERSITY OF PAVIA   (Italy)

Author keywords

Hollow nanospheres; Silica; Surfactant free emulsion; Water in oil emulsion

Indexed keywords

BENZENE; CYCLOHEXANE; EMULSIFICATION; EMULSIONS; HEXANE; SILICA; STABILITY; SURFACE ACTIVE AGENTS; TRANSMISSION ELECTRON MICROSCOPY;

AQUEOUS AMMONIA; DISPERSED PHASE; DISPERSED PHASE PARTICLES; DODECANE; HOLLOW NANOSPHERES; HOLLOW SILICA NANOSPHERES; PH DEPENDENCE; RELATIVE STABILITIES; SILICA NANOPARTICLES; SILICA NANOSPHERES; SOFT TEMPLATE; SURFACTANT-FREE; TETRAETHOXYSILANES; UNIFORM SIZE; W/O EMULSIONS; WATER-IN-OIL EMULSION; WATER/OIL INTERFACES;

NANOSPHERES;

AMMONIA; BENZENE; CYCLOHEXANE; DODECANE; HEXANE; NANOMATERIAL; NANOSPHERE; OCTANE; SILICON DIOXIDE; SURFACTANT; WATER;

ARTICLE; DISPERSION; EMULSION; HYDROLYSIS; LIGHT SCATTERING; PARTICLE SIZE; PH; PRIORITY JOURNAL; SYNTHESIS; TRANSMISSION ELECTRON MICROSCOPY;

EID: 78649444292     PISSN: 09277757     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.colsurfa.2010.09.036     Document Type: Article

References (21)

1. Caruso F. Hollow capsule processing through colloidal templating and self-assembly. Chem. Eur. J. 2000, 6:413-419.
2. 2 hollow spheres and rod bundles. J. Phys. Chem. C 2007, 111:11598-11603.
3. Cao S.-W., Zhu Y.-J. Iron oxide hollow spheres: microwave-hydrothermal ionic liquid preparation, formation mechanism, crystal phase and morphology control and properties. Acta Mater. 2009, 57:2154-2165.
4. Yang J., Lind J.U., Trogler W.C. Synthesis of hollow silica and titania nanospheres. Chem. Mater. 2008, 20:2875-2877.
5. Fan H.J., Gçsele U., Zacharias M. Formation of nanotubes and hollow nanoparticles based on kirkendall and diffusion processes: a review. Small 2007, 3:1660-1671.
6. Zou H., Wu S., Shen J. Polymer/silica nanocomposites: preparation, characterization, properties, and applications. Chem. Rev. 2008, 108:3893-3957.
7. Li W., Sha X., Dong W., Wang Z. Synthesis of stable hollow silica microspheres with mesoporous shell in nonionic W/O emulsion. Chem. Commun. 2002, 2434-2435.
8. Zimmermann C., Feldmann C., Wanner M., Gerthsen D. Nanoscale gold hollow spheres through a emulsion approach. Small 2007, 3:1347-1349.
9. Ogura T., Shibata H., Sakai K., Sakai H., Abe M. Direct preparation of highly ordered multilayer-type silica nanocapsules using spontaneously formed vesicles as templates. Chem. Lett. 2009, 38:120-121.
10. Hubert D.H.W., Martin Jung, Frederik Peter M., Bomans P.H.H., Meuldijk J., German A.L. Vesicle-directed growth of silica. Adv. Mater. 2000, 12:1286-1290.
11. Langevin D. Emulsions. Acc. Chem. Res. 1988, 21:255-260.
12. Song L., Ge X., Wang M., Zhang Z. Direct preparation of silica hollow spheres in a water in oil emulsion system: the effect of pH and viscosity. J. Non-Cryst. Solids 2006, 352:2230-2235.
13. Grigoriev D., Miller R., Shchukin D., Möhwald H. Interfacial assembly of partially hydrophobic silica nanoparticles induced by ultrasonic treatment. Small 2007, 3:665-671.
14. Ogino K., Ota M. Studies of spontaneous emulsification. II. The effect of nonionic surfactants. Bull. Chem. Soc. Jpn. 1975, 49:1187-1190.
15. Kamogawa K., Akatsuka H., Matsumoto M., Yokoyama S., Sakai T., Sakai H., Abe M. Surfactant-free O/W emulsion formation of oleic acid and its esters with ultrasonic dispersion. Colloids Surf. A: Physicochem. Eng. Aspects 2001, 180:41-53.
16. Beattie J.K., Djerdjev A.M. The pristine oil/water interface: surfactant-free hydroxide-charged emulsions. Angew. Chem. Int. Ed. 2004, 43:3568-3571.
17. Sakai T. Surfactant-free emulsions. Curr. Opin. Colloid Interface Sci. 2008, 13:228-235.
18. Lamb H. Hydrodynamics 1994, Cambridge University Press, Cambridge, UK. 6th ed.
19. Benran K. A Handbook of Chemistry 2004, Maruzen Co. Ltd., Tokyo.
20. Brinker C.K. Hydrolysis and condensation of silicates: effects on structure. J. Non-Cryst. Solids 1988, 100:31-50.
21. Feng Z., Li Y., Niu D., Li L., Zhao W., Chen H., Li L., Gao J., Ruan M., Shi J. A facile route to hollow nanospheres of mesoporous silica with tunable size. Chem. Commun. 2008, 2629-2631.