Controlling the Role of Nanopore Morphology in Capillary Condensation

被引：25

作者：

Casanova, Felix ^{[1
,3
,4
]}

Chiang, Casey E. ^{[1
,2
]}

Ruminski, Anne M. ^{[2
]}

Sailor, Michael J. ^{[2
]}

Schuller, Ivan K. ^{[1
]}

机构：

[1] Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA

[2] Univ Calif San Diego, Dept Chem & Biochem, La Jolla, CA 92093 USA

[3] CIC NanoGUNE, Donostia San Sebastian 20018, Basque Country, Spain

[4] Basque Fdn Sci, IKERBASQUE, Bilbao 48011, Basque Country, Spain

来源：

LANGMUIR | 2012年 / 28卷 / 17期

关键词：

PORE-BLOCKING; ADSORPTION HYSTERESIS; ARGON; SIMULATION; NITROGEN; SORPTION; SURFACE; MCM-41;

D O I：

10.1021/la204933m

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The effect of pore morphology on capillary condensation and evaporation in nanoporous silicon is studied experimentally. A variety of cooperative and local effects are observed in tailored nanopores with well-defined regions by directly probing gas adsorption in each region using optical interferometry. All observations are ascribed to the ability of the nanopore region to access the gas reservoir directly and the nucleation of liquid bridges at local heterogeneities within the nanopore region. These assumptions, consistent with recent simulations, can be extended to any real nanoporous system.

引用

页码：6832 / 6838

页数：7

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