The Experts below are selected from a list of 144 Experts worldwide ranked by ideXlab platform

S Dong - One of the best experts on this subject based on the ideXlab platform.

  • Silica sol-gel Composite film as an encapsulation matrix for the construction of an amperometric tyrosinase-based biosensor.
    Biosensors & bioelectronics, 2020
    Co-Authors: B Wang, J Zhang, S Dong
    Abstract:

    An amperometric tyrosinase enzyme electrode for the determination of phenols was developed by a simple and effective immobilization method using sol-gel techniques. A grafting copolymer was introduced into sol-gel solution and the composition of the resultant Organic-Inorganic Composite Material was optimized, the tyrosinase retained its activity in the sol-gel thin film and its response to several phenol compounds was determined at 0 mV vs. Ag/AgCl (sat. KCl). The dependences of the current response on pH, oxygen level and temperature were studied, and the stability of the biosensor was also evaluated. The sensitivity of the biosensor for catechol, phenol and p-cresol was 59.6, 23.1 and 39.4 microA/mM, respectively. The enzyme electrode maintained 73% of its original activity after intermittent use for three weeks when storing in a dry state at 4 degrees C.

  • Silica sol-gel Composite film as an encapsulation matrix for the construction of an amperometric tyrosinase-based biosensor.
    Biosensors and Bioelectronics, 2000
    Co-Authors: B Wang, J. Q. Zhang, S Dong
    Abstract:

    An amperometric tyrosinase enzyme electrode for the determination of phenols was developed by a simple and effective immobilization method using sol-gel techniques. A grafting copolymer was introduced into sol-gel solution and the composition of the resultant Organic-Inorganic Composite Material was optimized, the tyrosinase retained its activity in the sol-gel thin film and its response to several phenol compounds was determined at 0 mV vs. Ag/AgCl (sat. KCI). The dependences of the current response on pH, oxygen level and temperature were studied, and the stability of the biosensor was also evaluated. The sensitivity of the biosensor for catechol, phenol and p-cresol was 59.6, 23.1 and 39.4 muA/mM, respectively. The enzyme electrode maintained 73% of its original activity after intermittent use for three weeks when storing in a dry state at 4 degreesC. (C) 2000 Elsevier Science S.A. All rights reserved.

  • amperometric enzyme electrode for the determination of hydrogen peroxide based on sol gel hydrogel Composite film
    Analytica Chimica Acta, 2000
    Co-Authors: Bingquan Wang, Jingzhong Zhang, Guangjin Cheng, S Dong
    Abstract:

    A new type of Organic-Inorganic Composite Material was prepared by sol-gel method, and a peroxidase biosensor was fabricated by simply dropping sor-gel-peroxidase mixture onto glassy carbon electrode surface. The sol-gel Composite film and enzyme membrane were characterized by Fourier-transform infrared (FT-IR) spectroscopy and EQCM, the electrochemical behavior of the biosensor was studied with potassium hexacyanoferrate(II) as a mediator, and the effects of pH and operating potential were explored for optimum analytical performance by using amperometric method. The response time of the biosensor was about 10 s; the linear range was up to 3.4 mM with a detection limit of 5 x 10(-7) M. The sensor also exhibited high sensitivity (15 mu A mM(-1)) and good long-term stability. In addition, the performance of the biosensor was investigated using flow injection analysis (FIA), and the determination of hydrogen peroxide in real samples was discussed. (C)2000 Elsevier Science B.V. All rights reserved.

  • Amperometric enzyme electrode for the determination of hydrogen peroxide based on sol–gel/hydrogel Composite film
    Analytica Chimica Acta, 2000
    Co-Authors: Bingquan Wang, Jingzhong Zhang, Guangjin Cheng, S Dong
    Abstract:

    A new type of Organic-Inorganic Composite Material was prepared by sol-gel method, and a peroxidase biosensor was fabricated by simply dropping sor-gel-peroxidase mixture onto glassy carbon electrode surface. The sol-gel Composite film and enzyme membrane were characterized by Fourier-transform infrared (FT-IR) spectroscopy and EQCM, the electrochemical behavior of the biosensor was studied with potassium hexacyanoferrate(II) as a mediator, and the effects of pH and operating potential were explored for optimum analytical performance by using amperometric method. The response time of the biosensor was about 10 s; the linear range was up to 3.4 mM with a detection limit of 5 x 10(-7) M. The sensor also exhibited high sensitivity (15 mu A mM(-1)) and good long-term stability. In addition, the performance of the biosensor was investigated using flow injection analysis (FIA), and the determination of hydrogen peroxide in real samples was discussed. (C)2000 Elsevier Science B.V. All rights reserved.

Jonathan J Wilker - One of the best experts on this subject based on the ideXlab platform.

  • Structural and Compositional Characterization of the Adhesive Produced by Reef Building Oysters
    ACS Applied Materials & Interfaces, 2015
    Co-Authors: Erik M. Alberts, Stephen D. Taylor, Stephanie L. Edwards, Debra M. Sherman, Chia Ping Huang, Paul Kenny, Jonathan J Wilker
    Abstract:

    Oysters have an impressive ability to overcome difficulties of life within the stressful intertidal zone. These shellfish produce an adhesive for attaching to each other and building protective reef communities. With their reefs often exceeding kilometers in length, oysters play a major role in balancing the health of coastal marine ecosystems. Few details are available to describe oyster adhesive composition or structure. Here several characterization methods were applied to describe the nature of this Material. Microscopy studies indicated that the glue is comprised of organic fiber-like and sheet-like structures surrounded by an inorganic matrix. Phospholipids, cross-linking chemistry, and conjugated organics were found to differentiate this adhesive from the shell. Symbiosis in Material synthesis could also be present, with oysters incorporating bacterial polysaccharides into their adhesive. Oyster glue shows that an organic–inorganic Composite Material can provide adhesion, a property especially impo...

  • Structural and compositional characterization of the adhesive produced by reef building oysters
    ACS Applied Materials and Interfaces, 2015
    Co-Authors: Erik M. Alberts, Stephen D. Taylor, Stephanie L. Edwards, Debra M. Sherman, Chia Ping Huang, Paul Kenny, Jonathan J Wilker
    Abstract:

    Oysters have an impressive ability to overcome difficulties of life within the stressful intertidal zone. These shellfish produce an adhesive for attaching to each other and building protective reef communities. With their reefs often exceeding kilometers in length, oysters play a major role in balancing the health of coastal marine ecosystems. Few details are available to describe oyster adhesive composition or structure. Here several characterization methods were applied to describe the nature of this Material. Microscopy studies indicated that the glue is comprised of organic fiber-like and sheet-like structures surrounded by an inorganic matrix. Phospholipids, cross-linking chemistry, and conjugated organics were found to differentiate this adhesive from the shell. Symbiosis in Material synthesis could also be present, with oysters incorporating bacterial polysaccharides into their adhesive. Oyster glue shows that an Organic-Inorganic Composite Material can provide adhesion, a property especially important when constructing a marine ecosystem.

Erik M. Alberts - One of the best experts on this subject based on the ideXlab platform.

  • Structural and Compositional Characterization of the Adhesive Produced by Reef Building Oysters
    ACS Applied Materials & Interfaces, 2015
    Co-Authors: Erik M. Alberts, Stephen D. Taylor, Stephanie L. Edwards, Debra M. Sherman, Chia Ping Huang, Paul Kenny, Jonathan J Wilker
    Abstract:

    Oysters have an impressive ability to overcome difficulties of life within the stressful intertidal zone. These shellfish produce an adhesive for attaching to each other and building protective reef communities. With their reefs often exceeding kilometers in length, oysters play a major role in balancing the health of coastal marine ecosystems. Few details are available to describe oyster adhesive composition or structure. Here several characterization methods were applied to describe the nature of this Material. Microscopy studies indicated that the glue is comprised of organic fiber-like and sheet-like structures surrounded by an inorganic matrix. Phospholipids, cross-linking chemistry, and conjugated organics were found to differentiate this adhesive from the shell. Symbiosis in Material synthesis could also be present, with oysters incorporating bacterial polysaccharides into their adhesive. Oyster glue shows that an organic–inorganic Composite Material can provide adhesion, a property especially impo...

  • Structural and compositional characterization of the adhesive produced by reef building oysters
    ACS Applied Materials and Interfaces, 2015
    Co-Authors: Erik M. Alberts, Stephen D. Taylor, Stephanie L. Edwards, Debra M. Sherman, Chia Ping Huang, Paul Kenny, Jonathan J Wilker
    Abstract:

    Oysters have an impressive ability to overcome difficulties of life within the stressful intertidal zone. These shellfish produce an adhesive for attaching to each other and building protective reef communities. With their reefs often exceeding kilometers in length, oysters play a major role in balancing the health of coastal marine ecosystems. Few details are available to describe oyster adhesive composition or structure. Here several characterization methods were applied to describe the nature of this Material. Microscopy studies indicated that the glue is comprised of organic fiber-like and sheet-like structures surrounded by an inorganic matrix. Phospholipids, cross-linking chemistry, and conjugated organics were found to differentiate this adhesive from the shell. Symbiosis in Material synthesis could also be present, with oysters incorporating bacterial polysaccharides into their adhesive. Oyster glue shows that an Organic-Inorganic Composite Material can provide adhesion, a property especially important when constructing a marine ecosystem.

Stephanie L. Edwards - One of the best experts on this subject based on the ideXlab platform.

  • Structural and Compositional Characterization of the Adhesive Produced by Reef Building Oysters
    ACS Applied Materials & Interfaces, 2015
    Co-Authors: Erik M. Alberts, Stephen D. Taylor, Stephanie L. Edwards, Debra M. Sherman, Chia Ping Huang, Paul Kenny, Jonathan J Wilker
    Abstract:

    Oysters have an impressive ability to overcome difficulties of life within the stressful intertidal zone. These shellfish produce an adhesive for attaching to each other and building protective reef communities. With their reefs often exceeding kilometers in length, oysters play a major role in balancing the health of coastal marine ecosystems. Few details are available to describe oyster adhesive composition or structure. Here several characterization methods were applied to describe the nature of this Material. Microscopy studies indicated that the glue is comprised of organic fiber-like and sheet-like structures surrounded by an inorganic matrix. Phospholipids, cross-linking chemistry, and conjugated organics were found to differentiate this adhesive from the shell. Symbiosis in Material synthesis could also be present, with oysters incorporating bacterial polysaccharides into their adhesive. Oyster glue shows that an organic–inorganic Composite Material can provide adhesion, a property especially impo...

  • Structural and compositional characterization of the adhesive produced by reef building oysters
    ACS Applied Materials and Interfaces, 2015
    Co-Authors: Erik M. Alberts, Stephen D. Taylor, Stephanie L. Edwards, Debra M. Sherman, Chia Ping Huang, Paul Kenny, Jonathan J Wilker
    Abstract:

    Oysters have an impressive ability to overcome difficulties of life within the stressful intertidal zone. These shellfish produce an adhesive for attaching to each other and building protective reef communities. With their reefs often exceeding kilometers in length, oysters play a major role in balancing the health of coastal marine ecosystems. Few details are available to describe oyster adhesive composition or structure. Here several characterization methods were applied to describe the nature of this Material. Microscopy studies indicated that the glue is comprised of organic fiber-like and sheet-like structures surrounded by an inorganic matrix. Phospholipids, cross-linking chemistry, and conjugated organics were found to differentiate this adhesive from the shell. Symbiosis in Material synthesis could also be present, with oysters incorporating bacterial polysaccharides into their adhesive. Oyster glue shows that an Organic-Inorganic Composite Material can provide adhesion, a property especially important when constructing a marine ecosystem.

Debra M. Sherman - One of the best experts on this subject based on the ideXlab platform.

  • Structural and Compositional Characterization of the Adhesive Produced by Reef Building Oysters
    ACS Applied Materials & Interfaces, 2015
    Co-Authors: Erik M. Alberts, Stephen D. Taylor, Stephanie L. Edwards, Debra M. Sherman, Chia Ping Huang, Paul Kenny, Jonathan J Wilker
    Abstract:

    Oysters have an impressive ability to overcome difficulties of life within the stressful intertidal zone. These shellfish produce an adhesive for attaching to each other and building protective reef communities. With their reefs often exceeding kilometers in length, oysters play a major role in balancing the health of coastal marine ecosystems. Few details are available to describe oyster adhesive composition or structure. Here several characterization methods were applied to describe the nature of this Material. Microscopy studies indicated that the glue is comprised of organic fiber-like and sheet-like structures surrounded by an inorganic matrix. Phospholipids, cross-linking chemistry, and conjugated organics were found to differentiate this adhesive from the shell. Symbiosis in Material synthesis could also be present, with oysters incorporating bacterial polysaccharides into their adhesive. Oyster glue shows that an organic–inorganic Composite Material can provide adhesion, a property especially impo...

  • Structural and compositional characterization of the adhesive produced by reef building oysters
    ACS Applied Materials and Interfaces, 2015
    Co-Authors: Erik M. Alberts, Stephen D. Taylor, Stephanie L. Edwards, Debra M. Sherman, Chia Ping Huang, Paul Kenny, Jonathan J Wilker
    Abstract:

    Oysters have an impressive ability to overcome difficulties of life within the stressful intertidal zone. These shellfish produce an adhesive for attaching to each other and building protective reef communities. With their reefs often exceeding kilometers in length, oysters play a major role in balancing the health of coastal marine ecosystems. Few details are available to describe oyster adhesive composition or structure. Here several characterization methods were applied to describe the nature of this Material. Microscopy studies indicated that the glue is comprised of organic fiber-like and sheet-like structures surrounded by an inorganic matrix. Phospholipids, cross-linking chemistry, and conjugated organics were found to differentiate this adhesive from the shell. Symbiosis in Material synthesis could also be present, with oysters incorporating bacterial polysaccharides into their adhesive. Oyster glue shows that an Organic-Inorganic Composite Material can provide adhesion, a property especially important when constructing a marine ecosystem.