期刊
ANALYST
卷 140, 期 15, 页码 5295-5300出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5an00410a
关键词
-
资金
- National Basic Research Program of China (973 program) [2011CB911002]
- Ministry of Science and Technology of China [2013YQ170585]
- National Natural Science Foundation of China [21375123, 21405148]
- Foundation of Young Scholars of Jilin Province [20150520010JH]
- Scientific Research Foundation of Mudanjiang Normal University [QG2014004]
- Scientific Research Project of Mudanjiang [Z2013g001]
We report the fabrication of a novel amperometric sensor for tryptophan (Trp) based on a pristine multi-walled carbon nanotube/graphene oxide (pMWCNT/GO) hybrid obtained through the sonication of pMWCNTs in an aqueous solution of GO. The results of transmission electron microscopy and electrochemical impedance spectroscopy demonstrate the successful formation and the excellent charge transfer ability of the resulting hybrid. Compared with the commonly used acid-treated MWCNTs and GO, the resulting hybrid exhibits better electrocatalytic activity towards the oxidation of Trp, which is attributed to the synergistic effect of MWCNTs and GO. The current-time curve reveals that the catalytic oxidation current is linearly dependent on Trp concentration in the range of 50 nM to 4.25 mu M with a detection limit of 8 nM (S/N = 3). In addition, the proposed sensor is successfully employed to detect Trp in the real samples with satisfactory results.
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