期刊
ACS APPLIED MATERIALS & INTERFACES
卷 9, 期 35, 页码 29771-29781出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.7b08497
关键词
mesoporous nanospheres; NiCo2O4; naphthol isomers; amperometry; electrochemical sensor
资金
- Shanghai Municipal Science and Technology Commission [15DZ2260300]
- Young Eastern Scholar Project of Shanghai Municipal Education Commission [QD2015031]
- National Natural Science Foundation of China [21671132]
The novel ordered mesoporous NiCo2O4 (meso-NiCo2O4) nanospheres were synthesized by the nanocasting strategy followed by a calcination process for 2-naphthol (2-NAP) and 1-naphthol (1-NAP) individual sensing application. The as-obtained meso-NiCo2O4 material possesses mesoporous structure in spinel crystalline type with a larger specific surface area than other structures. The meso-NiCo2O4-modified carbon paste electrode exhibited excellent electrocatalytic performance for NAP detection by amperometry measurement. The fabricated sensor of 2-NAP and 1-NAP has a wide linear detection range (0.02-300 and 0.02-20 mu M) with high sensitivity (1.822 and 1.510 mu A mu M-1 cm(-2)) and low limit of detection (0.007 and 0.007 mu M), respectively. In addition, the NAP sensors possess excellent reproducibility, stability, and selectivity.
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