Understanding of the role of pH in filling mesoporous silica with magnetic nanoparticles

• Autorzy: Wolak W. , Dudek M. R. , Ho D. Q. , Marcjan K.

Identyfikatory

DOI

10.17512/jamcm.2016.1.19

• Języki publikacji: EN

Abstrakty

EN

Computer simulation study of filling pores of mesoporous silica with magnetic iron oxide nanoparticles which are diffusing towards the silica surface from a water solution with a given pH was presented. Three different values of the pH of the solution were under consideration, pH = 4, 7, and 10. The size of nanoparticles was of the order of magnitude of the nanopore diameter. It was observed that in the case of a low concentration of magnetic nanoparticles in the water solution the process of filling the silica pores weakly depends on the pH of the solution. The value of pH becomes only relevant for large concentration of magnetic nanoparticles. In the simulation, a 2-state Potts model was used for preparing the silica matrix. Diffusion of magnetic nanoparticles was restricted to lattice sites only.

Słowa kluczowe

EN

mesoporous silica; magnetic nanoparticles; point of zero charge

PL

mezoporowata krzemionka; nanocząstki magnetyczne

• Wydawca: Wydawnictwo Politechniki Częstochowskiej
• Czasopismo: Journal of Applied Mathematics and Computational Mechanics
• Rocznik: 2016
• Tom: Vol. 15, nr 1
• Strony: 191--196
• Opis fizyczny: Bibliogr. 11 poz., rys.

Twórcy

autor

Wolak W.

• Institute of Physics, University of Zielona Gora Zielona Góra, Poland

autor

Dudek M. R.

• Institute of Physics, University of Zielona Gora Zielona Góra, Poland

autor

Ho D. Q.

• Institute of Physics, University of Zielona Gora Zielona Góra, Poland
• Vinh University Vinh city, Nghe An, Vietnam

autor

Marcjan K.

• Institute of Physics, University of Zielona Gora Zielona Góra, Poland

Bibliografia

• [1] Lodhia J., Mandarano G., Ferris N. J., Eu P., Cowell S.F., Development and use of iron oxide nanoparticles (Part 1): Synthesis of iron oxide nanoparticles for MRI, Biomed. Imaging and Intervention Journal 2010, 6(2), e12.
• [2] Huang S., Li C., Cheng Z., Fan Y., Yang P., Zhang C., Yang K., Lin J., Magnetic Fe3O4 mesoporous silica composites for drug delivery and bioadsorption, J. Colloid. Interf. Sci. 2012, 376, 312-321.
• [3] Lu A.H., Salabas E.L., Schuth F., Magnetic nanoparticles: Synthesis, protection, functionalization, and application, Angew. Chem. Int. Ed. 2007, 46, 1222-1244.
• [4] Zapotoczny B., Dudek M.R., Koziol J.J., Mleczko J., Nanobuffering property of Fe3O4 magnetic nanoparticles in aqueous solution, Physica A 2013, 392, 1493-1499.
• [5] Borucka-Lipska J., Kiernozycki W., Guskos N., Dudek M.R., Ho D.Q., Wolak W., Marc M., Koziol J.J., Kalaga J.K., Investigation on magnetite concentrate with respect to its use in concrete, submitted.
• [6] Gelb L.D., Gubbins K.E., Characterization of porous glasses: Simulation models, adsorption isotherms, and the Brunauer-Emmett-Teller analysis method, Langmuir 1998, 14(8), 2097-2111.
• [7] Gelb L.D., Gubbins K.E., Pore size distributions in porous glasses: a computer simulation study, Langmuir 1999, 15(2), 305-308.
• [8] Dudek M.R., Gouyet J.F., Kolb M., Q+ 1 state Potts model of late stage sintering, Surface Science 1998, 401(2), 220-226.
• [9] Keren R., Sparks D.L., Effect of pH and ionic strength on boron adsorption by pyrophyllite, Soil Science Society of America Journal 1994, 58(4), 1095-1100.
• [10] Zapotoczny B., Dudek M.R., Guskos N., Kozio J.J., Padlyak B.V., Kosmider M., Rysiakiewicz-Pasek E., FMR study of the porous silicate glasses with Fe3O4 magnetic nanoparticles fillers, Journal of Nanomaterials 2012, 8.
• [11] Tombacz E., Majzik A., Horvat Z.S., Illes E., Magnetite in aqueous medium: coating its surface and surface coated with it, Romanian Reports in Physics 2006, 58(3), 281-286.

Uwagi

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.