Journal
RSC ADVANCES
Volume 5, Issue 105, Pages 86485-86489Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5ra18560b
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Funding
- National Basic Research Program of China (973 Program) [2012CB720803]
- National Natural Science Foundation [61404075, BK20130394]
- Guangdong Natural Science Funds for Distinguished Young Scholar [2014A030306026]
- Open Research Fund of State Key Laboratory of Bioelectronics, Southeast University
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In this work, a nonenzymatic electrochemical sensor based on nanoporous magnesium oxide (MgO) was developed for the rapid screening of hydrogen peroxide (H2O2) in milk. The nanoporous MgO, which was synthesized by a novel one-pot reaction process at low temperature, showed a large specific surface area and was favorable for constructing biosensors. Based on the nanoporous MgO, a nanosensor for H2O2 was developed. The sensor exhibited extremely high electrocatalytic activity toward the oxidation of H2O2 with a detection limit of 3.3 mu M and a wide linear range from 0.05 to 0.2 and 0.2 to 10 mM. The averaged recovery was determined to be from 94.3% to 119% for spiked milk samples. The proposed method is ideally suited for the fast screening of H2O2 misuse in milk at low cost.
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