Kraft lignin as dispersing agent for carbon nanotubes

被引：36
|
作者：
Milczarek, Grzegorz [1 ]
机构：
[1] Poznan Univ Tech, Inst Chem & Tech Electrochem, PL-60965 Poznan, Poland
来源：
JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 2010年 / 638卷 / 01期
关键词：
Carbon nanotubes; Redox polymer; Lignin; NADH; MODIFIED ELECTRODES; COMPOSITE; IODATE; WALL; REDUCTION; PERIODATE; BROMATE;
D O I：
10.1016/j.jelechem.2009.10.002
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Kraft lignin (KL) was found to undergo strong adsorption on multi-walled carbon nanotubes (MWCNT) from aqueous/organic solutions. The MWCNT/KL composite could be re-dispersed in dimethyl sulfoxide to form a relatively stable suspension. Films of MWCNT/KL could then be obtained using this suspension in the casting method. A strong interaction of MWCNT and KL was confirmed by Raman spectroscopy. The adsorbed lignin served also as a redox polymer and the composite modified electrode after initial electro-oxidation showed characteristic redox functions assignable to KL-derived quinone moieties. The redox activity of the MWCNT/KL composite could be employed to electrocatalyse the oxidation of dihydronicotinamide adenine dinucleotide (NADH) in a nearly neutral (pH 7.4) buffer or the reduction of iodate in acidic (pH 1.8) electrolyte. (c) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码：178 / 181
页数：4
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