Glucose biosensor based on glucose oxidase immobilized on a nanofilm composed of mesoporous hydroxyapatite, titanium dioxide, and modified with multi-walled carbon nanotubes

Li, Junhua; Kuang, Dai‐Zhi; Ye, Feng; Zhang, Fuxing; Liu, Mengqin

doi:10.1007/s00604-011-0693-1

Cited by 57 publications

(27 citation statements)

References 43 publications

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Section: The Various Mesoporous Materials Used In Electrochemical Ementioning

confidence: 99%

“…Oxide materials other than silica that have been applied to electrochemical biosensing are mesoporous Nb 2 O 5 185, 73, 199, Al 2 O 3 188, SnO 2 191, 193 and doped SnO 2 , i.e., antimony‐doped tin oxide (ATO) 75 and indium‐doped tin oxide (ITO) 192, 195, ZrO 2 194, 74, ZnO 201, TiO 2 186, 190, 191, 196, 200, MnO 2 189, 197, or Fe 3 O 4 121, 198. Hydroxyapatite was also used 196, 202. These materials are prepared by the direct templating approach depicted in Figure 1, e.g., Nb 2 O 5 73, 185, ATO 75, ITO 192, ZrO 2 74, 194 or MnO 2 189, or by other routes, e.g., self‐assembly of nanoparticles generating a mesoporosity defined by the space present between NPs, e.g., TiO 2 191, SnO 2 193 or hydroxyapatite 210; the mesoporous material can be otherwise produced by electrodeposition of ZnO 201 or MnO 2 197 in the presence of a surfactant template.…”

Section: The Various Mesoporous Materials Used In Electrochemical Ementioning

confidence: 99%

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Mesoporous Materials‐Based Electrochemical Enzymatic Biosensors

et al. 2015

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This review (239 references) is dealing with the use of mesoporous materials in the field of electrochemical enzymatic biosensors. After a brief discussion on the interest of mesoporous materials for electrochemical biosensing, a presentation of the various types of inorganic and organic‐inorganic hybrid mesostructures used to date in the elaboration of enzymatic bioelectrodes is given and the main bioelectrode configurations are described. The various biosensor applications are then summarized on the basis of a comprehensive table and some representative illustrations. The main detection schemes developed in the field are based on amperometry and mediated electrocatalysis, as well as some on spectroelectrochemistry.

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Section: The Various Mesoporous Materials Used In Electrochemical Ementioning

confidence: 99%

Section: The Various Mesoporous Materials Used In Electrochemical Ementioning

confidence: 99%

Mesoporous Materials‐Based Electrochemical Enzymatic Biosensors

et al. 2015

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“…To the best of our knowledge, we found a number of biosensors for glucose detection in the literature. Table 1 compares the performance of the CNTs-IDA-Co-GOx biosensor for glucose detection with the reported electrochemical biosensors [36,[40][41][42][43][44][45][46][47], revealing that the biosensor proposed in this study exhibits a very long linearity, high sensitivity, low detection limit and high stability, very promising for the detection of glucose.…”

Section: E /V Vs Scementioning

confidence: 97%

Direct electrochemical sensing of glucose using glucose oxidase immobilized on functionalized carbon nanotubes via a novel metal chelate-based affinity method

Zhao

Luo

et al. 2012

Microchim Acta

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We report on a novel amperometric glassy carbon biosensing electrode for glucose. It is based on the immobilization of a highly sensitive glucose oxidase (GOx) by affinity interaction on carbon nanotubes (CNTs) functionalized with iminodiacetic acid and metal chelates. The new technique for immobilization is exploiting the affinity of Co(II) ions to the histidine and cysteine moieties on the surface of GOx. The direct electrochemistry of immobilized GOx revealed that the functionalized CNTs greatly improve the direct electron transfer between GOx and the surface of the electrode to give a pair of well-defined and almost reversible redox peaks and undergoes fast heterogeneous electron transfer with a rate constant (k s ) of 0.59 s −1 . The GOx immobilized in this way fully retained its activity for the oxidation of glucose. The resulting biosensor is capable of detecting glucose at levels as low as 0.01 mM, and has excellent operational stability (with no decrease in the activity of enzyme over a 10 days period). The method of immobilizing GOx is easy and also provides a model technique for potential use with other redox enzymes and proteins.

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“…Due to its excellent chemical and physical properties, titanium dioxide (TiO 2 ), especially its forms with nanoporous structures, has been widely used in the application of photocatalysts, solar cells, gas sensors and self-cleaning components [1][2][3]. Among the various applications of TiO 2 , gas sensors have attracted considerable attention because of their good electrochemical stability and high sensitivity.…”

Section: Introductionmentioning

confidence: 99%

Conductometric sensor for ammonia and ethanol using gold nanoparticle-doped mesoporous TiO2

Xiong

Liu

2015

Microchim Acta

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We describe uniform and high-temperature-stable mesoporous TiO 2 beads functionalized with gold nanoparticles (AuNPs-TiO 2 ) for use in conductometric sensing of gases and organic vapors. The size of the interconnected main mesopores of the TiO 2 beads ranges from 8 to 15 nm, and the AuNPs have diameters between 8 and 10 nm. The mesoporous TiO 2 beads are formed during calcination while the structure-directing template agent is removed. Monodispersed AuNPs are formed by reduction in-situ and are placed inside the mesoporous TiO 2 framework. This prevents aggregation of the AuNPs even at 500°C. The materials were characterized by UV-vis spectroscopy, scanning and transmission electron microscopy, nitrogen adsorption-desorption, and X-ray diffraction. Comb-type gold electrodes were then fabricated on an alumina substrate and are shown to display excellent properties in terms of sensing ammonia, ethanol, methanol or acetone. The sensitivity (defined as the ratio of resistivities under vapor and air) of a typical AuNPs(0.5 %)-TiO 2 gas sensor for ethanol reached up to 5.65 at above 600 ppm at 75°C. Response time and recovery times (t 90 ≤20 s) are faster than (or comparable to) other metal-doped TiO 2 sensors, and working temperatures are much lower. An interesting observation was made in that the changes in the conductivity of the sensor change with temperature. The sensor prepared with AuNPs(0.5 %)-TiO 2 is of the p-type (in its response to ammonia gas) at 45°C, but becomes n-type at 20°C. Obviously, rather slight changes in temperature lead to a complete change in the direction of the conductometric signal change. This may provide a new aspect in terms of selective and highly sensitive detection of ammonia at ambient and slightly elevated temperatures.

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Glucose biosensor based on glucose oxidase immobilized on a nanofilm composed of mesoporous hydroxyapatite, titanium dioxide, and modified with multi-walled carbon nanotubes

Cited by 57 publications

References 43 publications

Mesoporous Materials‐Based Electrochemical Enzymatic Biosensors

Mesoporous Materials‐Based Electrochemical Enzymatic Biosensors

Direct electrochemical sensing of glucose using glucose oxidase immobilized on functionalized carbon nanotubes via a novel metal chelate-based affinity method

Conductometric sensor for ammonia and ethanol using gold nanoparticle-doped mesoporous TiO2

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