期刊
JOURNAL OF MATERIALS CHEMISTRY
卷 15, 期 24, 页码 2375-2382出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/b504170h
关键词
-
Graphite powder derivatised with 4-nitrophenyl moieties (NPcarbon) can be used to successively attach other chemical species to the graphite surface in a controlled and selective manner. Characterisation of these novel materials was undertaken using electrochemical and X-ray photoelectron spectroscopic (XPS) techniques. We demonstrate the proof of concept of this building-block'' chemistry by first reducing the nitro groups on the NPcarbon using a Sn-HCl reduction to the corresponding aniline-like moieties, and then coupling p-nitrobenzoic acid to these via an amide-linkage. Next we demonstrate the utility of this novel derivatisation method by coupling poly-S-benzyl-L-cysteine to the reduced NPcarbon in an analogous manner. After deprotection of the thiol groups using Na in liquid ammonia, the poly-L-cysteine derivatised carbon (PCcarbon) was found to complex cadmium(II) ions. Quantitative analysis of the uptake of Cd2+ from aqueous solutions at pH 5.0 by PCcarbon was carried out using stripping-voltammetry at a boron doped diamond (BDD) electrode and revealed that PCcarbon complexed 137 +/- 20 mg of Cd2+ per gram of modified PCcarbon.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据