Journal
BIOSENSORS & BIOELECTRONICS
Volume 112, Issue -, Pages 177-185Publisher
ELSEVIER ADVANCED TECHNOLOGY
DOI: 10.1016/j.bios.2018.03.021
Keywords
Mesoporous nanosheets; ZnCo2O4; O-nitrophenol; P-nitrophenol; Electrochemical sensor
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Funding
- National Natural Science Foundation of China [21671132]
- Programme of Introducing Talents of Discipline to Universities [D16002]
- Science and Technology Commission of Shanghai Municipality [15DZ2260300]
- Young Eastern Scholar Project of Shanghai Municipal Education Commission [QD2015031]
- Key Laboratory of Optoelectronic Materials Chemistry and Physics, Chinese Academy of Sciences [2008DP173016]
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Novel mesoporous ZnCo2O4 (meso-ZnCo2O4) nanosheets were synthesized by a simple hydrothermal method for detection of o-nitrophenol (ONP) and p-nitrophenol (PNP). The resultant meso-ZnCo2O4 nanosheets possess more catalytic active sites than other structures, which enhance the catalysis properties for the electrochemical detection of nitrophenol. This sensor exhibits a wide linear detection range (1-4000 and 1-4000 mu M) and high sensitivity (0.256 and 0.318 mu A mu M-1 cm(-2)), as well as low detection limit (0.3 and 0.3 mu M), for ONP and PNP, respectively. In addition, the fabricated sensor reveals excellent reproducibility, stability and selectivity.
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