用于高灵敏检测水中痕量Cu(II)的羧甲基壳聚糖修饰的高分散还原氧化石墨烯的制备
Preparation of Highly Dispersed Reduced Graphene Oxide Modified with Carboxymethyl Chitosan for Highly Sensitive Detection of Trace Cu(II) in Water.
作者信息
Chen Sheng, Ding Rui, Ma Xiuling, Xue Liqun, Lin Xiuzhu, Fan Xiaoping, Luo Zhimin
机构信息
School of Ocean Science and Biochemistry Engineering, Fuqing Branch of Fujian Normal University, 1 Longjiang Road, Fuqing 350300, China.
College of Environmental Science and Engineering, Fujian Normal University, 8 Shangsan Road, Fuzhou 350007, China.
出版信息
Polymers (Basel). 2016 Apr 1;8(4):78. doi: 10.3390/polym8040078.
In this article, reduced graphene oxide (RGO)/carboxymethyl chitosan (CMC) composites (RGO/CMC) were synthesized by a hydrothermal method through reduction and modification of graphene oxide (GO) in the presence of CMC. An electrochemical sensor for the determination of Cu(II) by differential pulse anodic stripping voltammetry (DPASV) was constructed by an electrode modified with RGO/CMC. The fabricated electrochemical sensor shows a linear range of 0.02⁻1.2 μmol·L, a detection limit of 3.25 nmol·L (S/N = 3) and a sensitivity of 130.75 μA·μmol·L·cm, indicating the sensor has an excellent detection performance for Cu(II).
在本文中，通过水热法在羧甲基壳聚糖（CMC）存在下对氧化石墨烯（GO）进行还原和改性，合成了还原氧化石墨烯（RGO）/羧甲基壳聚糖（CMC）复合材料（RGO/CMC）。采用RGO/CMC修饰电极构建了差分脉冲阳极溶出伏安法（DPASV）测定Cu(II)的电化学传感器。所制备的电化学传感器线性范围为0.02⁻1.2 μmol·L，检测限为3.25 nmol·L（S/N = 3），灵敏度为130.75 μA·μmol·L·cm，表明该传感器对Cu(II)具有优异的检测性能。
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