In:
Textile Research Journal, SAGE Publications, Vol. 75, No. 4 ( 2005-04), p. 326-330
Abstract:
To remove ammonia, traditional activated carbon is not as effective as expected. In this paper, a new alternative method of removing ammonia with metal-silk fibroin complex fibers through a coordination displacement reaction is proposed and studied. Electron spin resonance spectra (ESR) and atomic absorption spectrometry show that the Cu(O) 4 complex with low copper(II) content is formed when silk fibroin is soaked in cupric aqueous solution under acid condition, while the structure of the Cu(N) 4 complex with high copper(II) content is formed in a cuprammonia solution. Experimental results further show that the Cu(O) 4 complex is more effective than the Cu(N) 4 complex in term of ammonia adsorption. It is highly desirable to prepare a deodorizing material that has both high copper(II) content and a Cu(O) 4 complex structure. Based on our study, a novel deodorizing fiber is prepared as follows: silk fibroin fibers are first treated with tannic acid (TA), then dipped into the cuprammonia solution to obtain the Cu(O) 4 complex containing 8.5% (wt%) copper(II). Such fibers show high deodorizing performance and can be regenerated by heating.
Type of Medium:
Online Resource
ISSN:
0040-5175
,
1746-7748
DOI:
10.1177/004051750505732
Language:
English
Publisher:
SAGE Publications
Publication Date:
2005
detail.hit.zdb_id:
2209596-2
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