Journal
ANALYST
Volume 142, Issue 14, Pages 2603-2609Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7an00493a
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Funding
- National Natural Science Foundation of China [21575021, 21505031]
- Natural Science Foundation of Hebei Province [B2016201018]
- science technology research and development guidance programme project of Baoding City [15ZG006, 16ZG033]
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A simple and sensitive electrochemical sensor is constructed for the detection of chlorogenic acid (CGA) based on Au nanoparticles (NPs)/polyoxometalates/3D macroporous carbon (Au-POMs-MPC). Serving as both a reducing and stabilizing agent, the Keggin-type POM, H3PW12O40, is used for the synthesis of stable colloidal Au NPs and then used to link them to MPC at a mild temperature. Because of the unique structural properties and synergetic catalytic effect, Au-POMs-MPC can be developed as an effective sensing platform for the detection of CGA, which showed high activity and excellent analytical performance towards CGA, such as a wide linear range of 2.28 nM-3.24 mu M, a high sensitivity of 30 554.71 mu A mM(-1), and a low limit of detection of 2.15 nM. Importantly, the successfully fabricated Au-POMs-MPC device accurately measured the amount of CGA in pharmaceutical samples.
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