新型纳米壳聚糖席夫碱的合成与表征及铅(II)传感器的应用。
Synthesis and characterization of novel nano-chitosan Schiff base and use of lead (II) sensor.
机构信息
Necmettin Erbakan University, Faculty of Education, Department of Science Education, 42090 Konya, Turkey.
出版信息
Int J Biol Macromol. 2012 Dec;51(5):1159-66. doi: 10.1016/j.ijbiomac.2012.09.003. Epub 2012 Sep 12.
A new kind of nano-chitosan Schiff base ligand (CHNS) with particle size of 34 nm was formed by the reaction between the 2-amino groups of glucosamine residue of nano-chitosan and a 2,5-dihydroxybenzaldehyde. The chemical structures of the nano-chitosan and nano-chitosan Schiff base were characterized by FT-IR spectra, particle sizer, zeta potential, and elemental analysis. A new, simple and effective chemically modified carbon paste electrode with CHNS was prepared and used as a lead (II) sensor. The prepared electrode was characterized using scanning electronic microscopy (SEM-EDX) and cyclic voltammetry (CV). The modified electrode showed only one oxidation peak in the anodic scan at -0.34 V (vs. Ag/AgCl) for the oxidation of lead (II). The dedection limit (LOD) was calculated as 1.36×10(-7) for a 10-min preconcentration time at pH 6.0.
一种新型纳米壳聚糖希夫碱配体（CHNS）通过纳米壳聚糖中氨基葡萄糖残基的 2 个氨基与 2,5-二羟基苯甲醛之间的反应形成，粒径为 34nm。纳米壳聚糖和纳米壳聚糖希夫碱的化学结构通过傅里叶变换红外光谱（FT-IR）、粒度仪、Zeta 电位和元素分析进行了表征。用 CHNS 制备了一种新型、简单有效的化学修饰碳糊电极，并将其用作铅（II）传感器。使用扫描电子显微镜（SEM-EDX）和循环伏安法（CV）对制备的电极进行了表征。在 pH 值为 6.0 时，经 10 分钟预浓缩后，修饰电极在 -0.34 V（相对于 Ag/AgCl）处的阳极扫描中仅显示一个氧化峰，用于氧化铅（II）。在 pH 值为 6.0 时，经过 10 分钟预浓缩后，检测限（LOD）计算为 1.36×10(-7)。
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