For the first time, we are reporting the flower-like structure of copper hydroxide (Cu(OH)2) on freestanding 3D porous graphene foam (PGF). The Cu(OH)2 flowerlike structure fabricated via a simple and cost-effective chemical bath deposition (CBD) method. The CBD is a facile method which provide relatively inexpensive, simple and convenient route for large area deposition. The structural and morphological characterization of Cu(OH)2 reveals that, Cu(OH)2 flower-like structure, consists of nanorods (diameter ∼100 nm), are well covered over the porous graphene framework. The flower-like structure of copper hydroxide on PGF provides large surface area (Effective surface area = 9.44 cm2), which leads to enhancement of electrochemical activity. Significantly, Cu(OH)2/PGF electrode showed the excellent sensitivity (up to 3.36 mA mM-1 cm-2), low detection limit (1.2 μM), wide linear range (1.2 μM ∼ 6 mM). The Cu(OH)2/PGF exhibited good reproducibility and excellent selectivity toward usual interfering materials such as lactose, fructose, Acetaminophen, ascorbic acid, dopamine and urea in 1 M KOH aqueous electrolyte.
Bibliographical noteFunding Information:
This work was partially supported by the Priority Research Centers Program (2009-0093823), the Basic Science Research Program (2014-11-0553), Korea Research Fellowship Program funded by the Ministry of Science, ICT and Future Planning through the National Research Foundation of Korea (2015-11-1063), and the Korean Government (MSIP) (No. 2015R1A5A1037668) through the National Research Foundation (NRF) of Korea funded by the Ministry of Education, Science and Technology (MEST).
All Science Journal Classification (ASJC) codes
- Chemical Engineering(all)