Cobalt (II) chloride promoted formation of honeycomb patterned cellulose acetate films

被引：14

作者：

Naboka, Olga ^{[1
,2
]}

Sanz-Velasco, Anke ^{[1
,2
]}

Lundgren, Per ^{[1
,2
]}

Enoksson, Peter ^{[1
,2
]}

Gatenholm, Paul ^{[2
,3
]}

机构：

[1] Chalmers Univ Technol, Dept Microtechnol & Nanosci, BioNano Syst Lab, Micro & Nanosyst Grp, SE-41296 Gothenburg, Sweden

[2] Chalmers Univ Technol, Wallenberg Wood Sci Ctr, SE-41296 Gothenburg, Sweden

[3] Chalmers Univ Technol, Dept Chem & Biol Engn, SE-41296 Gothenburg, Sweden

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2012年 / 367卷

关键词：

Honeycomb patterned film; Cellulose acetate; Cobalt (II) chloride; Breath figure method; FABRICATION; MEMBRANES; CRYSTAL;

D O I：

10.1016/j.jcis.2011.10.030

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

CoCl2 containing honeycomb patterned films were prepared from cellulose acetate (CA)/CoCl2/acetone solutions by the breath figure method in a wide range of humidities. Size and pore regularity depend on the CA/CoCl2 molar ratio and humidity. When replacing CoCl2 with Co(NO3)(2) or CoBr2, no formation of ordered porosity in the cellulose acetate films is observed. According to data from scanning electron microscopy (SEM), Energy Dispersive X-ray Microanalysis (EDX), X-ray Diffraction (XRD) and Fourier transform infrared (FTIR) spectroscopy, the key role in the formation of honeycomb structures can be attributed to the physical and chemical properties of CoCl2 - hygroscopicity, low interaction with CA, and extraction from CA/CoCl2/acetone solution by water droplets condensed on the surface of the CA/CoCl2 solution. Obtained films are prospective for using in catalysis, hydrogen fuel cells, and optical sensing materials. (C) 2011 Elsevier Inc. All rights reserved.

引用

页码：485 / 493

页数：9

共 44 条

[1] Monomeric dioxouranium(VI), chromium(III), cobalt(II), nickel(II) and copper(II) complexes with primary cellulose acetate (PCA) [J].