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Sensitivity Enhancement in Nickel Hydroxide/3D‐Graphene as Enzymeless Glucose Detection |
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| Authors: | Iman Shackery Umarkant Patil Min‐Jung Song Ji Soo Sohn Sachin Kulkarni Surajit Some Su Chan Lee Min Sik Nam Wooyoung Lee Seong Chan Jun |
| Institution: | 1. School of Mechanical Engineering, Yonsei University, Seoul 120–749, Republic of Korea;2. College of Liberal Art & Interdisciplinary Studies, Kyonggi University, Yeongtong‐gu, Suwon‐si, Gyeonggi‐do 443‐760, Republic of Korea;3. Department of Dyestuff Technology, Institute of Chemical Technology, Matunga, Mumbai‐400 019, India;4. Department of Materials Science and Engineering, Yonsei University, Seoul 120–749, Republic of Korea |
| Abstract: | A nickel hydroxide (Ni(OH)2)/3D‐graphene composite is used as monolithic free‐standing electrode for enzymeless electrochemical detection of glucose. Ni(OH)2 nanoflakes are synthesized by using a simple solution growth procedure on 3D‐graphene foam which was grown by chemical vapor deposition (CVD). The pore structure of 3D‐graphene allows easy access to glucose with high surface area, which leads to glucose detection with an ultrahigh sensitivity of 3.49 mA mM?1 cm?2 and a significant lower detection limit up to 24 nM. Cyclic voltammetry (CV) and potentionstatic mode is used for non‐enzymatic glucose sensing. The impedance and effective surface area have been studied well. The high sensitivity, low detection limit and simple configuration of Ni(OH)2/three dimensional (3D)‐graphene composite electrodes can evoke its industrial application in glucose sensing devices. |
| Keywords: | 3D‐graphene Nickel hydroxide Nanoflakes Enzymeless glucose sensing |