A TIME DEPENDENT STUDY FOR THE FORMATION OF ULTRASMALL Cs-AlMCM-41 HOLLOW NANOSPHERES
Abstract
Monitoring of the formation of ultrasmall Cs-AlMCM-41 nanospheres under hydrothermal condition has been performed. It showed that when the CTABr surfactant, silica and alumina were mixed, homogenization of raw materials was first taking place, where CTABr molecules first interacted with the inorganic species via self-assembly into helical rod-like micelles. Hydrolysis, condensation and polymerization of silica and alumina precursors were then initiated. In addition, the Cs+ cation also participated during the formation of MCM-41 structure where it counterbalanced the negative charge of the aluminosilicate surface. After 14 h, the aluminosilicate oligomers were produced and fully enclosed the spherical micelles. Further increasing the hydrothermal treatment to 24 h onwards, polycondensation silanol siloxane would take place leading to the emergence of well-defined and highly ordered MCM-41 structure. This study came up with a clear picture on the formation of Cs-AlMCM-41 hollow nanospheres in cationic-surfactant-templated. This suggested that similar studies for other mesoporous materials such as MCM-48 and MCM-50 under different conditions and approaches could also be explored
References
Aiube, C.M., Oliveira, K.V.D. & Macedo, J.L.D. (2019). Effect of Cerium Precursor in the Synthesis of Ce-MCM-41 and in the Efficiency for Liquid-Phase Oxidation of Benzyl Alcohol. Catalysts, 9(4), 377
Bagshaw, S.A. & Bruce, I.J. (2008). Rapid Calcination of High Quality Mesostructured MCM-41, MSU-X, and SBA-15 Silicate Materials: A Step Towards Continuous Processing? Microporous and Mesoporous Materials, 109(1-3), 199-209.
Braga, P.R., Costa, A.A., de Macedo, J.L., Ghesti, G.F., de Souza, M.P., Dias, J.A. & Dias, S.C. (2011). Liquid phase calorimetric-adsorption analysis of Si-MCM-41: Evidence of strong hydrogen-bonding sites. Microporous and Mesoporous Materials, 139(1-3), 74-80.
Ghrear, T.M.A., Rigolet, S., Daou, T.J., Mintova, S., Ling, T.C., Tan, S.H. & Ng, E.P. (2019). Synthesis of Cs-ABW Nanozeolite in Organotemplate-Free System. Microporous and Mesoporous Materials, 277, 78-83.
Inagaki, S., Fukushima, Y. & Kuroda, K. (1993). Synthesis of Highly Ordered Mesoporous Materials from a Layered Polysilicate. Journal of the Chemical Society, Chemical Communications, (8), 680-682.
Jenkins, R. (2006). Xâ€Ray Techniques: Overview. Encyclopedia of Analytical Chemistry: Applications, Theory and Instrumentation.
Kresge, C.T., Leonowicz, M.E., Roth, W.J., Vartuli, J.C. & Beck, J.S. (1992). Ordered Mesoporous Molecular Sieves Synthesized by a Liquid-Crystal Template Mechanism. Nature, 359(6397), 710.
Kruk, M., Jaroniec, M. & Sayari, A. (1997). Adsorption Study of Surface and Structural Properties of MCM-41 Materials of Different Pore Sizes. The Journal of Physical Chemistry B, 101(4), 583-589.
Liu H. & Xu P., (2019). Smart Mesoporous Silica Nanoparticles for Protein Delivery. Nanomater. 9, 1-23.
Liu X.Y., Tian B.Z., Yu C.Z, Gao F., Xie S.H., Tu B., Che R.C., Peng L.M., Zhao D.Y., Angew (2002). Periodic Mesoporous Organosilicas: Preparation, Properties and Application. Chemical International Education, 41, 3876-3878
Liu, Z.L., Yang, T.E.N.G., Zhang, K., Yan, C.A.O. & Pan, W.P. (2013). CO2 Adsorption Properties and Thermal Stability of Different Amine-Impregnated MCM-41 Materials. Journal of Fuel Chemistry and Technology, 41(4), 469-475
Matei, D., Cursaru, D.L. & Mihai, S. (2016). Preparation of MCM-48 Mesoporous Molecular Sieve Influence of Preparation Conditions on the Structural Properties. Digest Journal of Nanomaterials and Biostructures, 11(1), 271-276.
Narayan, R., Nayak, U., Raichur, A. & Garg, S. (2018). Mesoporous Silica Nanoparticles: A Comprehensive Review on Synthesis and Recent Advances. Pharmaceutics, 10(3), 118
Petcu, C., Purcar, V., Spătaru, C.I., Alexandrescu, E., Şomoghi, R., Trică, B. & Jecu, M.L. (2017). The Influence of New Hydrophobic Silica Nanoparticles on the Surface Properties of the Films Obtained from Bilayer Hybrids. Nanomaterials, 7(2), 47.
Rahman, M.M., Aznan, M.A.B.M., Yusof, A.M., Ansary, R.H., Siddiqi, M.J. & Yusan, S. (2017). Synthesis and Characterization of Functionalized Se-MCM-41 a New Drug Carrier Mesopore Composite. Oriental Journal of Chemistry, 33(2), 611.
Slowing, I., Trewyn, B.G. & Lin, V.S.Y. (2006). Effect of Surface Functionalization of MCM-41-Type Mesoporous Silica Nanoparticles on the Endocytosis by Human Cancer Cells. Journal of the American Chemical Society, 128(46), 14792-14793.
Tanev, P.T. & Pinnavaia, T.J. (1995). A Neutral Templating Route to Mesoporous Molecular Sieves. Science, 267(5199), 865-867.
Watanabe, R., Hagihara, H. & Sato, H. (2018). Structure-Property Relationships of Polypropylene-Based Nanocomposites Obtained by Dispersing Mesoporous Silica into Hydroxyl-Functionalized Polypropylene. Part 1: Toughness, Stiffness and Transparency. Polymer Journal, 50(11), 1057
Yıldırım, Z.E., Gediz İliş, G., Mobedi, M. & Ülkü, S. (2011). Effect of Isotherm Shape on Mass Transfer in an Adsorbent Particle; An Isothermal Adsorption Process
Zhou, W. & Wang, Z.L. (Eds.). (2007). Scanning Microscopy for Nanotechnology: Techniques and Applications. Springer science & business media.
Copyright (c) 2021 FUDMA JOURNAL OF SCIENCES
This work is licensed under a Creative Commons Attribution 4.0 International License.
FUDMA Journal of Sciences
