Synthesis of Novel CuO Nanosheets and Their Non-Enzymatic Glucose Sensing Applications

Ibupoto, Zafar Hussain; Khun, Kimleang; Beni, Valerio; Liu, Xianjie; Willander, Magnus

doi:10.3390/s130607926

Cited by 110 publications

(46 citation statements)

References 60 publications

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“…The porous structure is obviously different from the literature for those leaves-like or sheet structures of CuO. [25][26][27][28][29][30][31][32][33][34][35][36][37][38][39] The surface area of these CuO nanosheets obtained based on the BET method is 10.03 m 2 ·g -1 . These porous CuO nanosheets are efficient for the gas flowing in and out, thus enhancing their gas sensing performance.…”

Section: Structural Characterizationmentioning

confidence: 77%

Room-Temperature High-Performance H₂S Sensor Based on Porous CuO Nanosheets Prepared by Hydrothermal Method

Wang

Lin

et al. 2016

ACS Appl. Mater. Interfaces

239

109

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Porous CuO nanosheets were prepared on alumina tubes using a facile hydrothermal method, and their morphology, microstructure and gas sensing properties were investigated. The monoclinic CuO nanosheets had an average thickness of 62.5 nm and were embedded with numerous holes with diameters ranging 5 nm to 17 nm. The porous CuO nanosheets were used to fabricate gas sensors to detect hydrogen sulfide (H 2 S) operated at room temperature. The sensor showed a good response sensitivity of 1.25 with the respond/recovery time of 234 s and 76 s, respectively, when tested with the H 2 S concentrations as low as 10 ppb. It also showed a remarkably high selectivity to the H 2 S, but only minor responses to other gases such as SO 2 , NO, NO 2 , H 2 , CO and C 2 H 5 OH. The working principle of the porous CuO nanosheets based sensor to detect the H 2 S was identified to be the phase transition from semiconducting CuO to a metallic conducting CuS.

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Section: Structural Characterizationmentioning

confidence: 77%

Room-Temperature High-Performance H₂S Sensor Based on Porous CuO Nanosheets Prepared by Hydrothermal Method

Wang

Lin

et al. 2016

ACS Appl. Mater. Interfaces

239

109

View full text Add to dashboard Cite

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“…The researchers have been interested in the synthesis of various morphologies of CuO because the size and morphology of the CuO have a large effect on the electrochemical and catalytic nanodevices performance [51]. Several morphologies of CuO have been grown by the hydrothermal methods such as NRs [52], nanosheets [53], nanoflowers [54] and nanotubes [55].…”

Section: Metal Oxide Semiconductor Nanostructuresmentioning

confidence: 99%

“…The fabricated CuO nanosheets were used for the development of non-enzymatic glucose sensor device [110]. Results of this research work are discussed below;…”

Section: The Growth Of Cuo Nanosheets and Their Non-enzymatic Glucosementioning

confidence: 99%

Synthesising Metal Oxide Materials and Their Composite Nanostructures for Sensing and Optoelectronic Device Applications

Khun¹

2015

Linköping Studies in Science and Technology. Dissertations

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Research on nanomaterials has been revolutionized in the last few years because of the attractive properties they have in comparison to the bulk phase of similar materials. These properties are physical, chemical, catalytic and optical. Among these nanomaterials, the metal oxide nanostructures have become of particular interest to scientists for the development of different optical, biochemical and biomedical nanodevices. In the present research work using the advantageous features of nanotechnology, high performance nanodevices for optoelectronics with a wide band gap compound nanostructure and highly sensitive sensor devices have been demonstrated. The nanotechnology is used to fabricate sensitive and precise nanodevices based on nanomaterials for the application of sensing.Among metal oxide nanostructures, ZnO, CuO and NiO are attractive materials because of their unique properties; their high surface area to volume ratio, their energy band gap of 3.37 eV, 1.2 eV and 3.7 eV, respectively, biocompatibility, high electron mobility, fast electron transfer rate and they are environmental-friendly in many applications. When used in sensor devices, nanomaterials have indicated high selectivity for possible use to detect the various analytes even in small volumes. Metal oxide nanostructures have shown to be good for optoelectronic nanodevices because of their electrical characteristics, high optical absorption and low-processing temperature.In this thesis, the synthesis of different morphologies of metal oxide semiconductor nanostructures and their composite using the hydrothermal method are demonstrated for various applications. This thesis is divided into three parts:In the first part of this research work, the fabrication of well-aligned ZnO nanorods using different concentrations of composite seed layer of inorganic and organic materials when using the hydrothermal growth method is presented. The effect of the composite seed layer on the i Abstract alignment, density and optical properties of the grown ZnO nanorods is investigated (paper I).Utilizing the advantage of ZnO nanostructure, a comparative study of ZnO nanorods and thin films for chemical and biosensing application was carried out. The ZnO nanorods and thin films were functionalized with strontium ionophore membrane, immobilized the galactose oxidase and lactate oxidase for determining the strontium ions, D-galactose and L-lactic acid, respectively (paper II).In the second part, the effects of different urea concentrations on the morphology of CuO nanostructures is studied as described in paper III. Moreover, CuO nanoflowers were functionalized with cadmium ion ionophore for the detection of Cd ions, while CuO nanosheets were grown by the low temperature growth method and were used for the development of a nonenzymatic glucose sensor, respectively (Paper IV).In the last part of this thesis, composite nanostructures of CuO/ZnO and NiO/ZnO were applied to develop dopamine sensor and fast sensitive UV photodetector, respectively. A nanohybrid of C...

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“…So, we select 200 8C as the optimum calcination temperature. The peak current density of about 3740 mA cm À2 in the oxidation of glucose is much higher than those of CuO films in former reports [35,38,39], which suggested a preferable electrocatalytic activity to glucose on this annealed CuO film electrode. Furthermore, the effect of different scan rates ranging from 10 to 70 mV s À1 on the oxidation of glucose at the CuO/ITO was also investigated and presented in Figure S2.…”

Section: Electrochemical Measurementsmentioning

confidence: 81%

“…Recently, CuO nanostructures (such as nanosheets [35], nanobelts [36] and nanowalls [37]) on Cu foils directly applied for glucose sensing has been explored. But, CuO thin films that were grown on other substrate such as ITO [38] and gold layer-coated glass substrate [39], have been seldom reported. Moreover, most of these nanostructures fabrications are relatively complicated and time-consuming.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Novel CuO Nanosheets with Porous Structure and Their Non‐Enzymatic Glucose Sensing Applications

et al. 2015

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Novel CuO thin films composed of porous nanosheets were in situ formed on indium tin oxide (ITO) by a simple, low temperature solution method, and used as working electrodes to construct nonenzymatic glucose sensor after calcinations. Cyclic voltammetry revealed that the CuO/ITO electrode calcinated at 200 °C exhibited better electrocatalytic activity for glucose. For the amperometric glucose detection, such prepared electrode showed low operating potential of 0.35 V and high sensitivity of 2272.64 μA mM−1 cm−2. Moreover, the CuO/ITO electrode also showed good stability, reproducibility and high anti‐interference ability. Thus, it is a promising material for the development of non‐enzymatic glucose sensors.

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Synthesis of Novel CuO Nanosheets and Their Non-Enzymatic Glucose Sensing Applications

Cited by 110 publications

References 60 publications

Room-Temperature High-Performance H₂S Sensor Based on Porous CuO Nanosheets Prepared by Hydrothermal Method

Room-Temperature High-Performance H₂S Sensor Based on Porous CuO Nanosheets Prepared by Hydrothermal Method

Synthesising Metal Oxide Materials and Their Composite Nanostructures for Sensing and Optoelectronic Device Applications

Synthesis of Novel CuO Nanosheets with Porous Structure and Their Non‐Enzymatic Glucose Sensing Applications

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Synthesis of Novel CuO Nanosheets and Their Non-Enzymatic Glucose Sensing Applications

Cited by 110 publications

References 60 publications

Room-Temperature High-Performance H2S Sensor Based on Porous CuO Nanosheets Prepared by Hydrothermal Method

Room-Temperature High-Performance H2S Sensor Based on Porous CuO Nanosheets Prepared by Hydrothermal Method

Synthesising Metal Oxide Materials and Their Composite Nanostructures for Sensing and Optoelectronic Device Applications

Synthesis of Novel CuO Nanosheets with Porous Structure and Their Non‐Enzymatic Glucose Sensing Applications

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Room-Temperature High-Performance H₂S Sensor Based on Porous CuO Nanosheets Prepared by Hydrothermal Method

Room-Temperature High-Performance H₂S Sensor Based on Porous CuO Nanosheets Prepared by Hydrothermal Method