Simple one-step synthesis of nitrogen-doped carbon nanotube-loaded cobalt nano-composites and its electrochemical sensor of luteolin
Source abstract
Abstract
Nitrogen-doped carbon nanotube-loaded cobalt nanocomposites C(N)@Co_x (x is 600, 700 and 800) were prepared by a simple one-step pyrolysis method at different temperatures, and then characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), Raman spectroscopy, high resolution transmission electron microscope (HRTEM), X-ray photoelectron spectroscopy (XPS), and Brunauer- Emmett-Teller (BET) analyses. The sample C(N)@Co_700 calcined at 700 ℃ has the largest N doping amount and the smallest cobalt nanoparticle loading, and has the highest electrochemical activity. Herein, a simple electrochemical sensor has been fabricated and used for sensitive detection of Luteolin (Lu). The electrochemical signal of C(N)@Co_700/GCE was linearly correlated with the concentration of Lu in the range of 0.05–30 μM, and the sensitive detection of Lu was realized with a limit of detection (LOD) of 0.0059 μM (S/N = 3). In addition, the prepared sensor has good stability and anti-interference properties, which were applied to the detection of Lu in real samples with satisfactory results. This study provides a simple strategy to build a new electrochemical sensor based on carbon nanotube composites, which has very important scientific research value in the rapid and sensitive detection of active ingredients of Chinese herbal medicines and proprietary Chinese medicines.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Electrochemical sensors and biosensors · Conducting polymers and applications · Electrochemical Analysis and Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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