title: Synthesis of carbon nanotube-nickel nanocomposites using atomic layer deposition for high-performance non-enzymatic glucose sensing.
abstract: A useful strategy has been developed to fabricate carbon-nanotube-nickel (CNT-Ni) nanocomposites through atomic layer deposition (ALD) of Ni and chemical vapor deposition (CVD) of functionalized CNTs. Various techniques, including scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS), were used to characterize the morphology and the structure of as-prepared samples. It was confirmed that the products possess uniform Ni nanoparticles that are constructed by finely controlled deposition of Ni onto oxygen or bromine functionalized CNT surface. Electrochemical studies indicate that the CNT-Ni nanocomposites exhibit high electrocatalytic activity for glucose oxidation in alkaline solutions, which enables the products to be used in enzyme-free electrochemical sensors for glucose determination. It was demonstrated that the CNT-Ni nanocomposite-based glucose biosensor offers a variety of merits, such as a wide linear response window for glucose concentrations of 5 μM-2 mM, short response time (3 s), a low detection limit (2 μM), high sensitivity (1384.1 μA mM(-1) cm(-2)), and good selectivity and repeatability.
authors.affiliation: Nanodevice Laboratory, School of Electrical and Electronic Engineering, Yonsei University, Seodaemun-Gu, Seoul 120-749, Republic of Korea.
authors.forename: Taejin
authors.initials: T
authors.lastname: Choi
authors.affiliation: Nanodevice Laboratory, School of Electrical and Electronic Engineering, Yonsei University, Seodaemun-Gu, Seoul 120-749, Republic of Korea.
authors.forename: Soo Hyeon
authors.initials: SH
authors.lastname: Kim
authors.affiliation: Nanodevice Laboratory, School of Electrical and Electronic Engineering, Yonsei University, Seodaemun-Gu, Seoul 120-749, Republic of Korea; Thin Film Materials Research Group, Korea Research Institute of Chemical Technology, Daejeon 305-600, Republic of Korea.
authors.forename: Chang Wan
authors.initials: CW
authors.lastname: Lee
authors.affiliation: Nano-Devices and Process Laboratory, School of Materials Science and Engineering, Yeungnam University, Dae-Dong, Gyeongsan-Si 712-749, Republic of Korea.
authors.forename: Hangil
authors.initials: H
authors.lastname: Kim
authors.affiliation: Nano-Devices and Process Laboratory, School of Materials Science and Engineering, Yeungnam University, Dae-Dong, Gyeongsan-Si 712-749, Republic of Korea.
authors.forename: Sang-Kyung
authors.initials: SK
authors.lastname: Choi
authors.affiliation: Nano-Devices and Process Laboratory, School of Materials Science and Engineering, Yeungnam University, Dae-Dong, Gyeongsan-Si 712-749, Republic of Korea.
authors.forename: Soo-Hyun
authors.initials: SH
authors.lastname: Kim
authors.affiliation: Laboratory of Organic Materials for Information Processing, Department of Chemical and Biomolecular Engineering, Yonsei University, Seodaemun-Gu, Seoul 120-749, Republic of Korea.
authors.forename: Eunkyoung
authors.initials: E
authors.lastname: Kim
authors.affiliation: Nanodevice Laboratory, School of Electrical and Electronic Engineering, Yonsei University, Seodaemun-Gu, Seoul 120-749, Republic of Korea.
authors.forename: Jusang
authors.initials: J
authors.lastname: Park
authors.affiliation: Nanodevice Laboratory, School of Electrical and Electronic Engineering, Yonsei University, Seodaemun-Gu, Seoul 120-749, Republic of Korea. Electronic address: hyungjun@yonsei.ac.kr.
authors.forename: Hyungjun
authors.initials: H
authors.lastname: Kim
mesh_terms: D015374:Biosensing Techniques / Q000379:methods*; D005947:Glucose / Q000737:chemistry / Q000302:isolation & purification*; D006801:Humans; D008855:Microscopy, Electron, Scanning; D046529:Microscopy, Electron, Transmission; D053761:Nanocomposites / Q000737:chemistry; D037742:Nanotubes, Carbon / Q000737:chemistry*; D009532:Nickel / Q000737:chemistry*; D056951:Photoelectron Spectroscopy
chemical_list: D037742:Nanotubes, Carbon; D009532:Nickel; D005947:Glucose
keywords: Atomic layer deposition; Carbon nanotube nanocomposite; Carbon tetrabromide precursor; Chemical vapor deposition; Enzyme-free glucose biosensor; Nickel nanoparticle electrocatalyst