Water Trapping Dynamics in Carbohydrate-Populated Smectite Interlayer Nanopores
Water Trapping Dynamics in Carbohydrate-Populated Smectite Interlayer Nanopores
复制标题
碳水化合物填充的蒙脱石层间纳米孔中的水捕获动力学
DOI:
10.1021/acs.jpcc.9b09246
复制
发表时间:
2019
期刊:
影响因子:
--
通讯作者:
Aristilde, Ludmilla
中科院分区:
文献类型:
--
作者:
Kelch, Sabrina E.;Ferrage, Eric;Lanson, Bruno;Charlet, Laurent;Aristilde, Ludmilla
Smectite-type clays play a critical role in the trapping of fluids within soil and atmospheric nanoparticles. The hydrodynamics of cation-saturated smectite nanopores are well documented. However, little is known about the influence of small organic compounds. Here we investigate the effects of carbohydrates (glucose and cellobiose), representing an important class of organic compounds, on the hydration and nanopore structures of montmorillonite, a prototypical smectite. To achieve the same amount of adsorbed water, higher relative humidity was required in the presence of the adsorbed carbohydrates than with the clay alone. The decrease in the characteristic micropore water adsorption with the clay–carbohydrate aggregates implied that water adsorption was constrained within the clay nanopore regions. The presence of carbohydrates promoted water retention as a function of gradual decrease in moisture content. Moisture-dependent X-ray diffraction patterns determined that, relative to the mineral alone, greater nanopore sizes were preserved in the presence of the carbohydrates, despite severe dehydration that is expected to induce clay nanopore collapse. Fourier-transform infrared spectroscopy captured disruption in the population of exchangeable waters within the carbohydrate-populated clay nanopores, with some agreement with the measured water-desorption profiling. These new findings demonstrate that carbohydrates can restructure smectite interlayer nanopores and water trapping dynamics.
登录
查看更多内容
DOI:
10.1021/jp050957u
发表时间:
2005-12
期刊:
The journal of physical chemistry. B
影响因子:
--
作者:
E. Rinnert;C. Carteret;B. Humbert;G. Fragneto-Cusani;J. Ramsay;A. Delville;J. Robert;I. Bihannic;M. Pelletier;L. Michot
通讯作者:
E. Rinnert;C. Carteret;B. Humbert;G. Fragneto-Cusani;J. Ramsay;A. Delville;J. Robert;I. Bihannic;M. Pelletier;L. Michot
影响因子:
9.9
作者:
E. Tertre;E. Ferrage;I. Bihannic;L. Michot;D. Prêt
通讯作者:
D. Prêt
DOI:
--
发表时间:
2013
期刊:
Plant physiology and biochemistry : PPB
影响因子:
--
作者:
F. Paynel;A. Pavlov;G. Ancelin;C. Rihouey;L. Picton;L. Lebrun;C. Morvan
通讯作者:
C. Morvan
影响因子:
4.2
作者:
D. Greenland
通讯作者:
D. Greenland
DOI:
10.1021/jp904981v
发表时间:
2009
期刊:
The journal of physical chemistry. B
影响因子:
--
作者:
Sai Kumar Ramadugu;Y. Chung;J. Xia;C. Margulis
通讯作者:
C. Margulis