Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/15523
Title: Polyethylenimine coated bacterial cellulose nanofiber membrane and application as adsorbent and catalyst
Authors: Wang, J
Lu, X
Ng, PF
Lee, KI
Fei, B 
Xin, JH 
Wu, JY 
Keywords: Adsorption
Bacterial cellulose
Catalyst
Nanofiber
Polyethylenimine
Issue Date: 2015
Publisher: Academic Press Inc.
Source: Journal of colloid and interface science, 2015, v. 440, p. 32-38 How to cite?
Journal: Journal of Colloid and Interface Science 
Abstract: Bacterial cellulose (BC) nanofiber membranes were simply aminalized by a flush-coating and post-crosslinking method. Firstly, wet BC membranes were flushed through by an aqueous solution of polyethylenimine (PEI) and glycerol diglycidyl ether (GDE) under vacuum suction, then further heated up to 70°C to crosslink the resultant coating on the surface of the nanofibers. The PEI coated bacterial cellulose (BC@PEI) nanofiber membrane presented excellent adsorption performance for Cu2+ and Pb2+ ions from aqueous solutions. Desorption of these ions was achieved using ethylene diamine tetraacetic acid treatment. This cycle of adsorption and desorption was repeated for several times with good remain adsorption performance (over 90%). Furthermore, the adsorbed Cu2+ ions can be reduced to copper nanoparticles, and showed excellent catalytic performance for methylene blue reduction in aqueous solution. The catalytic performance can remained after several times of usage.
URI: http://hdl.handle.net/10397/15523
ISSN: 0021-9797
DOI: 10.1016/j.jcis.2014.10.035
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