NMR relaxation parameters from molecular simulations of hydrated inorganic nanopores
NMR relaxation parameters from molecular simulations of hydrated inorganic nanopores
复制标题
水合无机纳米孔分子模拟的 NMR 弛豫参数
DOI:
10.1002/qua.24708
复制
发表时间:
2014
影响因子:
2.2
通讯作者:
Bhatt J
中科院分区:
文献类型:
--
作者:
Bhatt J
Nuclear magnetic resonance (NMR) relaxometry is a powerful technique to characterize diffusive motion of fluids in nanoporous to microporous media. Molecular simulations can be used to predict NMR relaxation parameters using a dipolar spin–spin correlation function. In this article, molecular dynamics simulations of water diffusion in anomalous 11 Å tobermorite, consisting of three slit pores and one gel pore of width ∼1.0 nm, have been performed. The spin–spin correlation function components corresponding to both 2D and quasi‐2D translation and rotation of water are presented. It was found that motion in the slit pores is highly correlated, leading to a significantly shorter relaxation time compared to bulk water. The correlation between the slit pores and the gel pore was found to be negligible compared to that within either the gel pore or the slit pore exclusively. Nevertheless, this correlation function can be useful in quantifying water diffusion within the slit pores, which occurs primarily through stochastic site jumping. It was found that stronger surface interaction leads to lower relaxation times, while the hydroxyls on the surface help further lower the water relaxation times. © 2014 Wiley Periodicals, Inc.
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DOI:
10.1088/0022-3719/14/4/018
发表时间:
1981-02
期刊:
Journal of Physics C: Solid State Physics
影响因子:
--
作者:
C. A. Sholl
通讯作者:
C. A. Sholl
DOI:
--
发表时间:
2009
期刊:
影响因子:
--
作者:
S. Churakov
通讯作者:
S. Churakov
DOI:
--
发表时间:
1974
期刊:
影响因子:
--
作者:
C. A. Sholl
通讯作者:
C. A. Sholl
DOI:
--
发表时间:
1986
期刊:
影响因子:
--
作者:
D. Faux;D. Ross;C. A. Sholl
通讯作者:
C. A. Sholl
DOI:
--
发表时间:
1973
期刊:
影响因子:
--
作者:
J. Hindman;A. Svirmickas;M. Wood
通讯作者:
M. Wood