Hydrophobic nanoporous material and wetting liquid together comprise a system with promising energy related applications. The mechanism of the interaction between liquid and solid phase is not fully explored. In this paper, based on the quasistatic compression experiments on investigating the mechanical behavior of ZSM-5 zeolite/NaCl solution system, the effects of two key parameters, that is, the pretreatment temperature of ZSM-5 zeolite and NaCl concentration, are parametrically and quantitatively investigated based on Laplace-Washburn equation. Results show that both pretreatment temperature and NaCl concentration raise the infiltration pressure and NaCl can also promote defiltration. The advancing contact and receding contact angle of zeolite-NaCl-air system increase with both pretreatment temperature and NaCl concentration, and the contact angle hysteresis decreases with NaCl concentration. Results may provide fundamental explanation to the nanoconfined liquid behavior and liquid-solid interaction, thus, to smartly control the mechanical properties of the liquid spring and bumpers for energy dissipation function. 1. Introduction Heterogeneous systems containing nanoporous material and liquid may lead to many interesting and promising applications [1], thanks to their highly developed and ultralarge surface [2]. In particular, the energy related applications now receive more and more attention, such as molecular spring [3], shock absorber or damper [4], among others. In essence, the energy absorption/mitigation ability is mainly realized by the basic idea that spreading liquid molecules on the nonwetting nanopores may need a certain value of pressure, that is, the capillary pressure [1]. During the external force driven liquid intrusion into the nanopores, the bulk liquid transforms into molecule group and soon a large surface is developed with large amount of excessive interfacial energy. In the unloading process, the liquid molecules may either completely or partially or not defiltrate at all [4, 5], depending on the wetting properties of the liquid and solid phase. This proposed energy conversion mechanism prepares nanoporous materials to be a promising energy dissipation/conversion system with 1-2 higher order of magnitude than traditional materials [6]. The interaction between liquid and solid, as well as the liquid molecule motion in a nanoconfined environment, dominates the infiltration and defiltration process to influence the energy mitigation related behaviors. Therefore, a quantitative explanation to the liquid molecule infiltration and
References
[1]
C. Bréchignac, P. Houdy, and M. Lahmani, Nanomaterials and Nanochemistry, Springer, Berlin, Germany, 2007.
[2]
W. J. Roth, P. Nachtigall, R. E. Morris et al., “A family of zeolites with controlled pore size prepared using a top-down method,” Nature Chemistry, vol. 5, pp. 628–633, 2013.
[3]
Y. Qiao, V. K. Punyamurtula, A. Han, X. Kong, and F. B. Surani, “Temperature dependence of working pressure of a nanoporous liquid spring,” Applied Physics Letters, vol. 89, no. 25, Article ID 251905, 2006.
[4]
C. V. Suciu, T. Iwatsubo, and S. Deki, “Investigation of a colloidal damper,” Journal of Colloid and Interface Science, vol. 259, no. 1, pp. 62–80, 2003.
[5]
V. Eroshenko, R.-C. Regis, M. Soulard, and J. Patarin, “Energetics: a new field of applications for hydrophobic zeolites,” Journal of the American Chemical Society, vol. 123, no. 33, pp. 8129–8130, 2001.
[6]
B. Xu, Y. Qiao, T. Park, M. Tak, Q. Zhou, and X. Chen, “A conceptual thermal actuation system driven by interface tension of nanofluids,” Energy and Environmental Science, vol. 4, no. 9, pp. 3632–3639, 2011.
[7]
A. Han and Y. Qiao, “Pressure-induced infiltration of aqueous solutions of multiple promoters in a nanoporous silica,” Journal of the American Chemical Society, vol. 128, no. 32, pp. 10348–10349, 2006.
[8]
X. Kong and Y. Qiao, “Improvement of recoverability of a nanoporous energy absorption system by using chemical admixture,” Applied Physics Letters, vol. 86, no. 15, Article ID 151919, pp. 1–3, 2005.
[9]
Database of Zeolite Structure, International Zeolite Association, June 2013, http://izasc.ethz.ch/fmi/xsl/IZA-SC/ftc_tm.xsl?-db=Atlas_main&-lay=tm&STC=MFI&-find.
[10]
Y. T. Sun, J. Xu, Y. B. Li et al., “Experimental study on energy dissipation characteristics of ZSM-5 zeolite/water system,” Advanced Engineering Materials, vol. 15, no. 8, pp. 740–746, 2013.
[11]
E. W. Washburn, “The dynamics of capillary flow,” Physical Review, vol. 17, no. 3, pp. 273–283, 1921.
[12]
L. Coiffard and V. Eroshenko, “Temperature effect on water intrusion/expulsion in grafted silica gels,” Journal of Colloid and Interface Science, vol. 300, no. 1, pp. 304–309, 2006.
[13]
O. V. Ievtushenko, V. A. Eroshenko, Y. G. Grosu, J. M. Nedelec, and J. P. E. Grolier, “Evolution of the energetic characteristics of repulsive clathrates in a wide temperature range,” Physical Chemistry Chemical Physics, vol. 15, no. 12, pp. 4451–4457, 2013.
[14]
A. Han and Y. Qiao, “Controlling infiltration pressure of a nanoporous silica gel via surface treatment,” Chemistry Letters, vol. 36, no. 7, pp. 882–883, 2007.
[15]
N. Y. Chen, “Hydrophobic properties of zeolites,” Journal of Physical Chemistry, vol. 80, no. 1, pp. 60–64, 1976.
[16]
N. L. Jarvis and M. A. Scheiman, “Surface potentials of aqueous electrolyte solutions,” Journal of Physical Chemistry, vol. 72, no. 1, pp. 74–78, 1968.
[17]
P. K. Weissenborn and R. J. Pugh, “Surface tension of aqueous solutions of electrolytes: relationship with ion hydration, oxygen solubility, and bubble coalescence,” Journal of Colloid and Interface Science, vol. 184, no. 2, pp. 550–563, 1996.
[18]
P. Leroy, A. Lassin, M. Azaroual, and L. André, “Predicting the surface tension of aqueous 1？:？1 electrolyte solutions at high salinity,” Geochimica et Cosmochimica Acta, vol. 74, no. 19, pp. 5427–5442, 2010.
[19]
B. Hribar, N. T. Southall, V. Vlachy, and K. A. Dill, “How ions affect the structure of water,” Journal of the American Chemical Society, vol. 124, no. 41, pp. 12302–12311, 2002.
[20]
C. D. Daub, D. Bratko, and A. Luzar, “Electric control of wetting by salty nanodrops: molecular dynamics simulations,” Journal of Physical Chemistry C, vol. 115, no. 45, pp. 22393–22399, 2011.
[21]
N. Sghaier, M. Prat, and S. Ben Nasrallah, “On the influence of sodium chloride concentration on equilibrium contact angle,” Chemical Engineering Journal, vol. 122, no. 1-2, pp. 47–53, 2006.
[22]
L. Pauling, “The sizes of ions and the structure of ionic crystals,” Journal of the American Chemical Society, vol. 49, no. 3, pp. 765–790, 1927.
[23]
C. V. Suciu, T. Iwatsubo, K. Yaguchi, and M. Ikenaga, “Novel and global approach of the complex and interconnected phenomena related to the contact line movement past a solid surface from hydrophobized silica gel,” Journal of Colloid and Interface Science, vol. 283, no. 1, pp. 196–214, 2005.
[24]
J. D. Eick, R. J. Good, and A. W. Neumann, “Thermodynamics of contact angles. II. Rough solid surfaces,” Journal of Colloid And Interface Science, vol. 53, no. 2, pp. 235–238, 1975.
[25]
S. Brandon and A. Marmur, “Simulation of contact angle hysteresis on chemically heterogeneous surfaces,” Journal of Colloid and Interface Science, vol. 183, no. 2, pp. 351–355, 1996.
[26]
C. N. C. Lam, R. Wu, D. Li, M. L. Hair, and A. W. Neumann, “Study of the advancing and receding contact angles: liquid sorption as a cause of contact angle hysteresis,” Advances in Colloid and Interface Science, vol. 96, no. 1–3, pp. 169–191, 2002.
[27]
A. Y. Fadeev and T. J. McCarthy, “Trialkylsilane monolayers covalently attached to silicon surfaces: wettability studies indicating that molecular topography contributes to contact angle hysteresis,” Langmuir, vol. 15, no. 11, pp. 3759–3766, 1999.
[28]
P. G. Degennes, “Wetting: statics and dynamics,” Reviews of Modern Physics, vol. 57, no. 3, pp. 827–863, 1985.
