The Experts below are selected from a list of 214929 Experts worldwide ranked by ideXlab platform
Xuping Sun - One of the best experts on this subject based on the ideXlab platform.
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production of stable aqueous dispersion of poly 3 4 ethylenedioxythiophene nanorods using graphene oxide as a stabilizing agent and their application for nitrite Detection
Analyst, 2011Co-Authors: Sen Liu, Jingqi Tian, Lei Wang, Yonglan Luo, Xuping SunAbstract:A stable aqueous dispersion of poly(3,4-ethylenedioxythiophene) (PEDOT) nanorods stabilized by graphene oxide (GO) has been successfully prepared via interface polymerization of EDOT in the presence of GO for the first time. The non-covalent functionalization of PEDOT by GO leads to a PEDOT–GO dispersion that can be stable for several days without the observation of any floating or precipitated particles. Several analytical techniques including Raman spectroscopy, scanning electron microscopy (SEM), and transmission electron microscopy (TEM) have been used to characterize the resultant PEDOT–GO nanocomposites. It is found that such PEDOT–GO nanocomposites exhibit good catalytic activity toward the oxidation of nitrite, leading to a sensor for Detection of nitrite. The Linear Detection range and Detection limit are estimated to be 4 μM to 2.48 mM (r = 0.999), and 1.2 μM at a signal-to-noise ratio of 3, respectively.
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self assembled graphene platelet glucose oxidase nanostructures for glucose biosensing
Biosensors and Bioelectronics, 2011Co-Authors: Sen Liu, Jingqi Tian, Lei Wang, Yonglan Luo, Xuping SunAbstract:Graphene platelet-glucose oxidase (GP-GOD) nanostructures have been prepared through self-assembly of GOD and chitosan (CS) functionalized GPs by electrostatic attraction in aqueous solution. The stable aqueous dispersion of GPs was prepared by chemical reduction of graphene oxide with the use of CS as a reducing and stabilizing agent. UV-vis spectroscopy, X-ray diffraction, transmission electron microscopy, scanning electron microscopy and X-ray photoelectron spectroscopy were used to characterize the resulting GPs and GP-GOD nanostructures. Furthermore, a glucose biosensor was constructed by deposition of the resultant GP-GOD on the surface of glassy carbon electrode. It was found that the resulting biosensor exhibits good response to glucose. The Linear Detection range is estimated to be from 2 to 22 mM (r=0.9987), and the Detection limit is estimated to be 20 μM at a signal-to-noise ratio of 3.
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self assembled graphene platelet glucose oxidase nanostructures for glucose biosensing
Biosensors and Bioelectronics, 2011Co-Authors: Sen Liu, Jingqi Tian, Lei Wang, Yonglan Luo, Xuping SunAbstract:Graphene platelet-glucose oxidase (GP-GOD) nanostructures have been prepared through self-assembly of GOD and chitosan (CS) functionalized GPs by electrostatic attraction in aqueous solution. The stable aqueous dispersion of GPs was prepared by chemical reduction of graphene oxide with the use of CS as a reducing and stabilizing agent. UV-vis spectroscopy, X-ray diffraction, transmission electron microscopy, scanning electron microscopy and X-ray photoelectron spectroscopy were used to characterize the resulting GPs and GP-GOD nanostructures. Furthermore, a glucose biosensor was constructed by deposition of the resultant GP-GOD on the surface of glassy carbon electrode. It was found that the resulting biosensor exhibits good response to glucose. The Linear Detection range is estimated to be from 2 to 22 mM (r = 0.9987), and the Detection limit is estimated to be 20 mu M at a signal-to-noise ratio of 3. (C) 2011 Elsevier B.V. All rights reserved.
Lei Wang - One of the best experts on this subject based on the ideXlab platform.
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production of stable aqueous dispersion of poly 3 4 ethylenedioxythiophene nanorods using graphene oxide as a stabilizing agent and their application for nitrite Detection
Analyst, 2011Co-Authors: Sen Liu, Jingqi Tian, Lei Wang, Yonglan Luo, Xuping SunAbstract:A stable aqueous dispersion of poly(3,4-ethylenedioxythiophene) (PEDOT) nanorods stabilized by graphene oxide (GO) has been successfully prepared via interface polymerization of EDOT in the presence of GO for the first time. The non-covalent functionalization of PEDOT by GO leads to a PEDOT–GO dispersion that can be stable for several days without the observation of any floating or precipitated particles. Several analytical techniques including Raman spectroscopy, scanning electron microscopy (SEM), and transmission electron microscopy (TEM) have been used to characterize the resultant PEDOT–GO nanocomposites. It is found that such PEDOT–GO nanocomposites exhibit good catalytic activity toward the oxidation of nitrite, leading to a sensor for Detection of nitrite. The Linear Detection range and Detection limit are estimated to be 4 μM to 2.48 mM (r = 0.999), and 1.2 μM at a signal-to-noise ratio of 3, respectively.
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a method for the production of reduced graphene oxide using benzylamine as a reducing and stabilizing agent and its subsequent decoration with ag nanoparticles for enzymeless hydrogen peroxide Detection
Carbon, 2011Co-Authors: Jingqi Tian, Lei WangAbstract:A stable aqueous dispersion of reduced graphene oxide (rGO) has been prepared by the chemical reduction of graphene oxide with the use of benzylamine as a reducing and stabilizing agent. Raman spectroscopy, and X-ray photoelectron spectroscopy were used to characterize the resulting rGO. The rGO could be decorated with Ag nanoparticles (AgNPs) by direct adsorption of preformed, negatively-charged AgNPs. It was found that the resulting hybrid exhibits good catalytic activity toward the reduction of hydrogen peroxide, leading to an enzymeless sensor with a fast amperometric response time of less than 2 s. The Linear Detection range is estimated to be from 100 mu M to 100 mM (r = 0.999), and the Detection limit is estimated to be 31.3 mu M at a signal-to-noise ratio of 3. (C) 2011 Elsevier Ltd. All rights reserved.
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self assembled graphene platelet glucose oxidase nanostructures for glucose biosensing
Biosensors and Bioelectronics, 2011Co-Authors: Sen Liu, Jingqi Tian, Lei Wang, Yonglan Luo, Xuping SunAbstract:Graphene platelet-glucose oxidase (GP-GOD) nanostructures have been prepared through self-assembly of GOD and chitosan (CS) functionalized GPs by electrostatic attraction in aqueous solution. The stable aqueous dispersion of GPs was prepared by chemical reduction of graphene oxide with the use of CS as a reducing and stabilizing agent. UV-vis spectroscopy, X-ray diffraction, transmission electron microscopy, scanning electron microscopy and X-ray photoelectron spectroscopy were used to characterize the resulting GPs and GP-GOD nanostructures. Furthermore, a glucose biosensor was constructed by deposition of the resultant GP-GOD on the surface of glassy carbon electrode. It was found that the resulting biosensor exhibits good response to glucose. The Linear Detection range is estimated to be from 2 to 22 mM (r=0.9987), and the Detection limit is estimated to be 20 μM at a signal-to-noise ratio of 3.
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self assembled graphene platelet glucose oxidase nanostructures for glucose biosensing
Biosensors and Bioelectronics, 2011Co-Authors: Sen Liu, Jingqi Tian, Lei Wang, Yonglan Luo, Xuping SunAbstract:Graphene platelet-glucose oxidase (GP-GOD) nanostructures have been prepared through self-assembly of GOD and chitosan (CS) functionalized GPs by electrostatic attraction in aqueous solution. The stable aqueous dispersion of GPs was prepared by chemical reduction of graphene oxide with the use of CS as a reducing and stabilizing agent. UV-vis spectroscopy, X-ray diffraction, transmission electron microscopy, scanning electron microscopy and X-ray photoelectron spectroscopy were used to characterize the resulting GPs and GP-GOD nanostructures. Furthermore, a glucose biosensor was constructed by deposition of the resultant GP-GOD on the surface of glassy carbon electrode. It was found that the resulting biosensor exhibits good response to glucose. The Linear Detection range is estimated to be from 2 to 22 mM (r = 0.9987), and the Detection limit is estimated to be 20 mu M at a signal-to-noise ratio of 3. (C) 2011 Elsevier B.V. All rights reserved.
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microwave assisted rapid synthesis of ag nanoparticles graphene nanosheet composites and their application for hydrogen peroxide Detection
Journal of Nanoparticle Research, 2011Co-Authors: Jingqi Tian, Lei WangAbstract:Ag nanoparticles/graphene nanosheet (AgNPs/GN) composites have been rapidly prepared by a one-pot microwave-assisted reduction method, carried out by microwave irradiation of a N,N-dimethylformamide (DMF) solution of graphene oxide (GO) and AgNO3. Several analytical techniques including UV–vis spectroscopy, FT-IR spectroscopy, Raman spectroscopy, X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and transmission electron microscopy (TEM) have been used to characterize the resulting AgNPs/GN composites. It suggests that such composites exhibit good catalytic activity toward reduction of hydrogen peroxide (H2O2), leading to a H2O2 sensor with a fast amperometric response time of less than 2 s. The Linear Detection range is estimated to be from 0.1 to 100 mM (r = 0.999), and the Detection limit is estimated to be 0.5 μM at a signal-to-noise ratio of 3.
Sen Liu - One of the best experts on this subject based on the ideXlab platform.
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production of stable aqueous dispersion of poly 3 4 ethylenedioxythiophene nanorods using graphene oxide as a stabilizing agent and their application for nitrite Detection
Analyst, 2011Co-Authors: Sen Liu, Jingqi Tian, Lei Wang, Yonglan Luo, Xuping SunAbstract:A stable aqueous dispersion of poly(3,4-ethylenedioxythiophene) (PEDOT) nanorods stabilized by graphene oxide (GO) has been successfully prepared via interface polymerization of EDOT in the presence of GO for the first time. The non-covalent functionalization of PEDOT by GO leads to a PEDOT–GO dispersion that can be stable for several days without the observation of any floating or precipitated particles. Several analytical techniques including Raman spectroscopy, scanning electron microscopy (SEM), and transmission electron microscopy (TEM) have been used to characterize the resultant PEDOT–GO nanocomposites. It is found that such PEDOT–GO nanocomposites exhibit good catalytic activity toward the oxidation of nitrite, leading to a sensor for Detection of nitrite. The Linear Detection range and Detection limit are estimated to be 4 μM to 2.48 mM (r = 0.999), and 1.2 μM at a signal-to-noise ratio of 3, respectively.
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self assembled graphene platelet glucose oxidase nanostructures for glucose biosensing
Biosensors and Bioelectronics, 2011Co-Authors: Sen Liu, Jingqi Tian, Lei Wang, Yonglan Luo, Xuping SunAbstract:Graphene platelet-glucose oxidase (GP-GOD) nanostructures have been prepared through self-assembly of GOD and chitosan (CS) functionalized GPs by electrostatic attraction in aqueous solution. The stable aqueous dispersion of GPs was prepared by chemical reduction of graphene oxide with the use of CS as a reducing and stabilizing agent. UV-vis spectroscopy, X-ray diffraction, transmission electron microscopy, scanning electron microscopy and X-ray photoelectron spectroscopy were used to characterize the resulting GPs and GP-GOD nanostructures. Furthermore, a glucose biosensor was constructed by deposition of the resultant GP-GOD on the surface of glassy carbon electrode. It was found that the resulting biosensor exhibits good response to glucose. The Linear Detection range is estimated to be from 2 to 22 mM (r=0.9987), and the Detection limit is estimated to be 20 μM at a signal-to-noise ratio of 3.
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self assembled graphene platelet glucose oxidase nanostructures for glucose biosensing
Biosensors and Bioelectronics, 2011Co-Authors: Sen Liu, Jingqi Tian, Lei Wang, Yonglan Luo, Xuping SunAbstract:Graphene platelet-glucose oxidase (GP-GOD) nanostructures have been prepared through self-assembly of GOD and chitosan (CS) functionalized GPs by electrostatic attraction in aqueous solution. The stable aqueous dispersion of GPs was prepared by chemical reduction of graphene oxide with the use of CS as a reducing and stabilizing agent. UV-vis spectroscopy, X-ray diffraction, transmission electron microscopy, scanning electron microscopy and X-ray photoelectron spectroscopy were used to characterize the resulting GPs and GP-GOD nanostructures. Furthermore, a glucose biosensor was constructed by deposition of the resultant GP-GOD on the surface of glassy carbon electrode. It was found that the resulting biosensor exhibits good response to glucose. The Linear Detection range is estimated to be from 2 to 22 mM (r = 0.9987), and the Detection limit is estimated to be 20 mu M at a signal-to-noise ratio of 3. (C) 2011 Elsevier B.V. All rights reserved.
Jingqi Tian - One of the best experts on this subject based on the ideXlab platform.
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production of stable aqueous dispersion of poly 3 4 ethylenedioxythiophene nanorods using graphene oxide as a stabilizing agent and their application for nitrite Detection
Analyst, 2011Co-Authors: Sen Liu, Jingqi Tian, Lei Wang, Yonglan Luo, Xuping SunAbstract:A stable aqueous dispersion of poly(3,4-ethylenedioxythiophene) (PEDOT) nanorods stabilized by graphene oxide (GO) has been successfully prepared via interface polymerization of EDOT in the presence of GO for the first time. The non-covalent functionalization of PEDOT by GO leads to a PEDOT–GO dispersion that can be stable for several days without the observation of any floating or precipitated particles. Several analytical techniques including Raman spectroscopy, scanning electron microscopy (SEM), and transmission electron microscopy (TEM) have been used to characterize the resultant PEDOT–GO nanocomposites. It is found that such PEDOT–GO nanocomposites exhibit good catalytic activity toward the oxidation of nitrite, leading to a sensor for Detection of nitrite. The Linear Detection range and Detection limit are estimated to be 4 μM to 2.48 mM (r = 0.999), and 1.2 μM at a signal-to-noise ratio of 3, respectively.
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a method for the production of reduced graphene oxide using benzylamine as a reducing and stabilizing agent and its subsequent decoration with ag nanoparticles for enzymeless hydrogen peroxide Detection
Carbon, 2011Co-Authors: Jingqi Tian, Lei WangAbstract:A stable aqueous dispersion of reduced graphene oxide (rGO) has been prepared by the chemical reduction of graphene oxide with the use of benzylamine as a reducing and stabilizing agent. Raman spectroscopy, and X-ray photoelectron spectroscopy were used to characterize the resulting rGO. The rGO could be decorated with Ag nanoparticles (AgNPs) by direct adsorption of preformed, negatively-charged AgNPs. It was found that the resulting hybrid exhibits good catalytic activity toward the reduction of hydrogen peroxide, leading to an enzymeless sensor with a fast amperometric response time of less than 2 s. The Linear Detection range is estimated to be from 100 mu M to 100 mM (r = 0.999), and the Detection limit is estimated to be 31.3 mu M at a signal-to-noise ratio of 3. (C) 2011 Elsevier Ltd. All rights reserved.
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self assembled graphene platelet glucose oxidase nanostructures for glucose biosensing
Biosensors and Bioelectronics, 2011Co-Authors: Sen Liu, Jingqi Tian, Lei Wang, Yonglan Luo, Xuping SunAbstract:Graphene platelet-glucose oxidase (GP-GOD) nanostructures have been prepared through self-assembly of GOD and chitosan (CS) functionalized GPs by electrostatic attraction in aqueous solution. The stable aqueous dispersion of GPs was prepared by chemical reduction of graphene oxide with the use of CS as a reducing and stabilizing agent. UV-vis spectroscopy, X-ray diffraction, transmission electron microscopy, scanning electron microscopy and X-ray photoelectron spectroscopy were used to characterize the resulting GPs and GP-GOD nanostructures. Furthermore, a glucose biosensor was constructed by deposition of the resultant GP-GOD on the surface of glassy carbon electrode. It was found that the resulting biosensor exhibits good response to glucose. The Linear Detection range is estimated to be from 2 to 22 mM (r=0.9987), and the Detection limit is estimated to be 20 μM at a signal-to-noise ratio of 3.
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self assembled graphene platelet glucose oxidase nanostructures for glucose biosensing
Biosensors and Bioelectronics, 2011Co-Authors: Sen Liu, Jingqi Tian, Lei Wang, Yonglan Luo, Xuping SunAbstract:Graphene platelet-glucose oxidase (GP-GOD) nanostructures have been prepared through self-assembly of GOD and chitosan (CS) functionalized GPs by electrostatic attraction in aqueous solution. The stable aqueous dispersion of GPs was prepared by chemical reduction of graphene oxide with the use of CS as a reducing and stabilizing agent. UV-vis spectroscopy, X-ray diffraction, transmission electron microscopy, scanning electron microscopy and X-ray photoelectron spectroscopy were used to characterize the resulting GPs and GP-GOD nanostructures. Furthermore, a glucose biosensor was constructed by deposition of the resultant GP-GOD on the surface of glassy carbon electrode. It was found that the resulting biosensor exhibits good response to glucose. The Linear Detection range is estimated to be from 2 to 22 mM (r = 0.9987), and the Detection limit is estimated to be 20 mu M at a signal-to-noise ratio of 3. (C) 2011 Elsevier B.V. All rights reserved.
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microwave assisted rapid synthesis of ag nanoparticles graphene nanosheet composites and their application for hydrogen peroxide Detection
Journal of Nanoparticle Research, 2011Co-Authors: Jingqi Tian, Lei WangAbstract:Ag nanoparticles/graphene nanosheet (AgNPs/GN) composites have been rapidly prepared by a one-pot microwave-assisted reduction method, carried out by microwave irradiation of a N,N-dimethylformamide (DMF) solution of graphene oxide (GO) and AgNO3. Several analytical techniques including UV–vis spectroscopy, FT-IR spectroscopy, Raman spectroscopy, X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and transmission electron microscopy (TEM) have been used to characterize the resulting AgNPs/GN composites. It suggests that such composites exhibit good catalytic activity toward reduction of hydrogen peroxide (H2O2), leading to a H2O2 sensor with a fast amperometric response time of less than 2 s. The Linear Detection range is estimated to be from 0.1 to 100 mM (r = 0.999), and the Detection limit is estimated to be 0.5 μM at a signal-to-noise ratio of 3.
Yonglan Luo - One of the best experts on this subject based on the ideXlab platform.
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production of stable aqueous dispersion of poly 3 4 ethylenedioxythiophene nanorods using graphene oxide as a stabilizing agent and their application for nitrite Detection
Analyst, 2011Co-Authors: Sen Liu, Jingqi Tian, Lei Wang, Yonglan Luo, Xuping SunAbstract:A stable aqueous dispersion of poly(3,4-ethylenedioxythiophene) (PEDOT) nanorods stabilized by graphene oxide (GO) has been successfully prepared via interface polymerization of EDOT in the presence of GO for the first time. The non-covalent functionalization of PEDOT by GO leads to a PEDOT–GO dispersion that can be stable for several days without the observation of any floating or precipitated particles. Several analytical techniques including Raman spectroscopy, scanning electron microscopy (SEM), and transmission electron microscopy (TEM) have been used to characterize the resultant PEDOT–GO nanocomposites. It is found that such PEDOT–GO nanocomposites exhibit good catalytic activity toward the oxidation of nitrite, leading to a sensor for Detection of nitrite. The Linear Detection range and Detection limit are estimated to be 4 μM to 2.48 mM (r = 0.999), and 1.2 μM at a signal-to-noise ratio of 3, respectively.
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self assembled graphene platelet glucose oxidase nanostructures for glucose biosensing
Biosensors and Bioelectronics, 2011Co-Authors: Sen Liu, Jingqi Tian, Lei Wang, Yonglan Luo, Xuping SunAbstract:Graphene platelet-glucose oxidase (GP-GOD) nanostructures have been prepared through self-assembly of GOD and chitosan (CS) functionalized GPs by electrostatic attraction in aqueous solution. The stable aqueous dispersion of GPs was prepared by chemical reduction of graphene oxide with the use of CS as a reducing and stabilizing agent. UV-vis spectroscopy, X-ray diffraction, transmission electron microscopy, scanning electron microscopy and X-ray photoelectron spectroscopy were used to characterize the resulting GPs and GP-GOD nanostructures. Furthermore, a glucose biosensor was constructed by deposition of the resultant GP-GOD on the surface of glassy carbon electrode. It was found that the resulting biosensor exhibits good response to glucose. The Linear Detection range is estimated to be from 2 to 22 mM (r=0.9987), and the Detection limit is estimated to be 20 μM at a signal-to-noise ratio of 3.
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self assembled graphene platelet glucose oxidase nanostructures for glucose biosensing
Biosensors and Bioelectronics, 2011Co-Authors: Sen Liu, Jingqi Tian, Lei Wang, Yonglan Luo, Xuping SunAbstract:Graphene platelet-glucose oxidase (GP-GOD) nanostructures have been prepared through self-assembly of GOD and chitosan (CS) functionalized GPs by electrostatic attraction in aqueous solution. The stable aqueous dispersion of GPs was prepared by chemical reduction of graphene oxide with the use of CS as a reducing and stabilizing agent. UV-vis spectroscopy, X-ray diffraction, transmission electron microscopy, scanning electron microscopy and X-ray photoelectron spectroscopy were used to characterize the resulting GPs and GP-GOD nanostructures. Furthermore, a glucose biosensor was constructed by deposition of the resultant GP-GOD on the surface of glassy carbon electrode. It was found that the resulting biosensor exhibits good response to glucose. The Linear Detection range is estimated to be from 2 to 22 mM (r = 0.9987), and the Detection limit is estimated to be 20 mu M at a signal-to-noise ratio of 3. (C) 2011 Elsevier B.V. All rights reserved.