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Hydrazine Sensor Based on Co 3 O 4 /rGO/Carbon Cloth Electrochemical Electrode
Author(s) -
Wang Qian,
Wu Meiyan,
Meng Shangjun,
Zang Xiaoxian,
Dai Ziyang,
Si Weili,
Huang Wei,
Dong Xiaochen
Publication year - 2016
Publication title -
advanced materials interfaces
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.671
H-Index - 65
ISSN - 2196-7350
DOI - 10.1002/admi.201500691
Subject(s) - materials science , graphene , electrode , electrochemistry , hydrazine (antidepressant) , oxide , cobalt , detection limit , electrochemical gas sensor , chemical engineering , selectivity , annealing (glass) , nanotechnology , inorganic chemistry , composite material , catalysis , metallurgy , organic chemistry , chemistry , chromatography , engineering
Porous cobalt oxide (Co 3 O 4 ) nanosheets, vertically aligned on reduced graphene oxide (rGO) modified 3D carbon cloth (CC), are synthesized by using a facile diffusion method at room temperature following a thermal annealing process (named as Co 3 O 4 /rGO/CC). Employed as freestanding electrochemical electrode, the detection behaviors of the Co 3 O 4 /rGO/CC toward hydrazine have been systematically investigated. It exhibits a high sensitivity (1306.7 μA mM −1 cm −2 ), good stability, and excellent selectivity. The detection limit for hydrazine can reach to 0.141 × 10 −6 M with a linear response range of 5–470 × 10 −6 M. The outstanding sensing properties of the Co 3 O 4 /rGO/CC electrode can be attributed to the electrocatalytic activity of porous Co 3 O 4 nanosheets, the good conductivity of carbon cloth, and the large surface area of the 3D structure. It presents potential applications in the field of environment protection, food analysis, medicine, and so on.