کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5463549 | 1517200 | 2017 | 5 صفحه PDF | دانلود رایگان |
- Nonstoichiometric CeO2@CNT nanowire arrays (NWAs) were synthesized.
- Synergistic effect of nonstoichiometric CeO2 and CNT towards H2O2 detection was elucidated.
- As-prepared NWAs were good substrate for the construction of cholesterol biosensors.
Nonstoichiometric CeO2@CNT core/shell nanowire arrays (NWAs) were synthesized by hydrothermal method in combination with chemical vapor deposition. Morphology and microstructure of the core/shell NWAs were characterized by SEM, XRD, TEM and Raman spectrum techniques. The novel nonstoichiometric CeO2@CNT core/shell NWAs were employed as substrates to construct cholesterol electrochemical biosensors. They showed high sensitivity of 336.6 μA cmâ2 mMâ1 and low detection limit of 7.4 µm towards cholesterol detection at working potential of â0.4 V due to synergistic effect of nonstoichiometric CeO2 and CNT, and they also demonstrated excellent selectivity towards interferents co-existing with cholesterol in blood serum.
Journal: Materials Letters - Volume 188, 1 February 2017, Pages 275-279