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Sensitivity Enhancement in Nickel Hydroxide/3D‐Graphene as Enzymeless Glucose Detection
Author(s) -
Shackery Iman,
Patil Umarkant,
Song MinJung,
Sohn Ji Soo,
Kulkarni Sachin,
Some Surajit,
Lee Su Chan,
Nam Min Sik,
Lee Wooyoung,
Jun Seong Chan
Publication year - 2015
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.201500009
Subject(s) - graphene , detection limit , nickel , materials science , cyclic voltammetry , hydroxide , electrode , chemical vapor deposition , electrochemistry , graphene foam , composite number , chemical engineering , nanotechnology , analytical chemistry (journal) , inorganic chemistry , graphene nanoribbons , chemistry , chromatography , composite material , metallurgy , engineering
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.