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Tensions at liquid interfaces: a general filter for the separation of micro-/nanoparticles.

Langmuir : the ACS journal of surfaces and colloids (2008-02-23)
Tao Xu, Mingshang Jin, Zhaoxiong Xie, Zhiyuan Jiang, Qin Kuang, Huifang Wu, Rongbin Huang, Lansun Zheng
ABSTRACT

In this letter, we put forward a new strategy for the separation of micro-/nanoparticles with different sizes and densities by using the tensions at liquid interfaces. The interactions between particles and a liquid-liquid interface have been analyzed. Furthermore, we applied our strategy to the separation of two size-distributed Cu2O particles by using the water and n-pentanol interface, which demonstrates the feasibility of the proposed separation method.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
1-Pentanol, ReagentPlus®, ≥99%
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1-Pentanol, ACS reagent, ≥99%
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1-Pentanol, puriss. p.a., ACS reagent, ≥99.0% (GC)
Supelco
1-Pentanol, analytical standard
Sigma-Aldrich
Amyl alcohol, ≥99%, FG
Supelco
1-Pentanol, Pharmaceutical Secondary Standard; Certified Reference Material
Sigma-Aldrich
1-Pentanol-1-13C, 99 atom % 13C, 99% (CP)