The Experts below are selected from a list of 25938 Experts worldwide ranked by ideXlab platform

Yuhua Shen - One of the best experts on this subject based on the ideXlab platform.

  • rapid room temperature synthesis of amorphous selenium protein composites using Capsicum Annuum l extract
    Nanotechnology, 2007
    Co-Authors: Shikuo Li, Yuhua Shen, Xuerong Yu, Xiuzhen Zhang, Liangbao Yang, Chuanhao Li
    Abstract:

    We describe the formation of amorphous selenium (α-Se)/protein composites using Capsicum Annuum L extract to reduce selenium ions (SeO32−) at room temperature. The reaction occurs rapidly and the process is simple and easy to handle. A protein with a molecular weight of 30 kDa extracted from Capsicum Annuum L not only reduces the SeO32− ions to Se0, but also controls the nucleation and growth of Se0, and even participates in the formation of α-Se/protein composites. The size and shell thickness of the α-Se/protein composites increases with high Capsicum Annuum L extract concentration, and decreases with low reaction solution pH. The results suggest that this eco-friendly, biogenic synthesis strategy could be widely used for preparing inorganic/organic biocomposites. In addition, we also discuss the possible mechanism of the reduction of SeO32− ions by Capsicum Annuum L extract.

  • Rapid, room-temperature synthesis of amorphous selenium/protein composites using Capsicum Annuum L extract
    Nanotechnology, 2007
    Co-Authors: Yuhua Shen, Xiuzhen Zhang, Anjian Xie, Liangbao Yang
    Abstract:

    We describe the formation of amorphous selenium (α-Se)/protein composites using Capsicum Annuum L extract to reduce selenium ions (SeO32−) at room temperature. The reaction occurs rapidly and the process is simple and easy to handle. A protein with a molecular weight of 30 kDa extracted from Capsicum Annuum L not only reduces the SeO32− ions to Se0, but also controls the nucleation and growth of Se0, and even participates in the formation of α-Se/protein composites. The size and shell thickness of the α-Se/protein composites increases with high Capsicum Annuum L extract concentration, and decreases with low reaction solution pH. The results suggest that this eco-friendly, biogenic synthesis strategy could be widely used for preparing inorganic/organic biocomposites. In addition, we also discuss the possible mechanism of the reduction of SeO32− ions by Capsicum Annuum L extract.

  • green synthesis of silver nanoparticles using Capsicum Annuum l extract
    Green Chemistry, 2007
    Co-Authors: Shikuo Li, Yuhua Shen, Xuerong Yu, Li Zhang, Qingfeng Zhang
    Abstract:

    Silver nanoparticles (NPs) were rapidly synthesized by treating silver ions with a Capsicum Annuum L. extract. The reaction process was simple and convenient to handle, and was monitored using ultraviolet-visible spectroscopy (UV-vis). The effect of Capsicum Annuum L. proteins on the formation of silver NPs was investigated using X-ray photoemission spectroscopy (XPS), electrochemical measurements, Fourier-transform infrared spectroscopy (FTIR) and differential spectrum techniques. The morphology and crystalline phase of the NPs were determined from transmission electron microscopy (TEM), selected area electron diffraction (SAED) and X-ray diffraction (XRD) spectra. The results indicated that the proteins, which have amine groups, played a reducing and controlling role during the formation of silver NPs in the solutions, and that the secondary structure of the proteins changed after reaction with silver ions. The crystalline phase of the NPs changed from polycrystalline to single crystalline and increased in size with increasing reaction time. A recognition–reduction–limited nucleation and growth model was suggested to explain the possible formation mechanism of silver NPs in Capsicum Annuum L. extract.

Liangbao Yang - One of the best experts on this subject based on the ideXlab platform.

  • rapid room temperature synthesis of amorphous selenium protein composites using Capsicum Annuum l extract
    Nanotechnology, 2007
    Co-Authors: Shikuo Li, Yuhua Shen, Xuerong Yu, Xiuzhen Zhang, Liangbao Yang, Chuanhao Li
    Abstract:

    We describe the formation of amorphous selenium (α-Se)/protein composites using Capsicum Annuum L extract to reduce selenium ions (SeO32−) at room temperature. The reaction occurs rapidly and the process is simple and easy to handle. A protein with a molecular weight of 30 kDa extracted from Capsicum Annuum L not only reduces the SeO32− ions to Se0, but also controls the nucleation and growth of Se0, and even participates in the formation of α-Se/protein composites. The size and shell thickness of the α-Se/protein composites increases with high Capsicum Annuum L extract concentration, and decreases with low reaction solution pH. The results suggest that this eco-friendly, biogenic synthesis strategy could be widely used for preparing inorganic/organic biocomposites. In addition, we also discuss the possible mechanism of the reduction of SeO32− ions by Capsicum Annuum L extract.

  • Rapid, room-temperature synthesis of amorphous selenium/protein composites using Capsicum Annuum L extract
    Nanotechnology, 2007
    Co-Authors: Yuhua Shen, Xiuzhen Zhang, Anjian Xie, Liangbao Yang
    Abstract:

    We describe the formation of amorphous selenium (α-Se)/protein composites using Capsicum Annuum L extract to reduce selenium ions (SeO32−) at room temperature. The reaction occurs rapidly and the process is simple and easy to handle. A protein with a molecular weight of 30 kDa extracted from Capsicum Annuum L not only reduces the SeO32− ions to Se0, but also controls the nucleation and growth of Se0, and even participates in the formation of α-Se/protein composites. The size and shell thickness of the α-Se/protein composites increases with high Capsicum Annuum L extract concentration, and decreases with low reaction solution pH. The results suggest that this eco-friendly, biogenic synthesis strategy could be widely used for preparing inorganic/organic biocomposites. In addition, we also discuss the possible mechanism of the reduction of SeO32− ions by Capsicum Annuum L extract.

Shikuo Li - One of the best experts on this subject based on the ideXlab platform.

  • rapid room temperature synthesis of amorphous selenium protein composites using Capsicum Annuum l extract
    Nanotechnology, 2007
    Co-Authors: Shikuo Li, Yuhua Shen, Xuerong Yu, Xiuzhen Zhang, Liangbao Yang, Chuanhao Li
    Abstract:

    We describe the formation of amorphous selenium (α-Se)/protein composites using Capsicum Annuum L extract to reduce selenium ions (SeO32−) at room temperature. The reaction occurs rapidly and the process is simple and easy to handle. A protein with a molecular weight of 30 kDa extracted from Capsicum Annuum L not only reduces the SeO32− ions to Se0, but also controls the nucleation and growth of Se0, and even participates in the formation of α-Se/protein composites. The size and shell thickness of the α-Se/protein composites increases with high Capsicum Annuum L extract concentration, and decreases with low reaction solution pH. The results suggest that this eco-friendly, biogenic synthesis strategy could be widely used for preparing inorganic/organic biocomposites. In addition, we also discuss the possible mechanism of the reduction of SeO32− ions by Capsicum Annuum L extract.

  • green synthesis of silver nanoparticles using Capsicum Annuum l extract
    Green Chemistry, 2007
    Co-Authors: Shikuo Li, Yuhua Shen, Xuerong Yu, Li Zhang, Qingfeng Zhang
    Abstract:

    Silver nanoparticles (NPs) were rapidly synthesized by treating silver ions with a Capsicum Annuum L. extract. The reaction process was simple and convenient to handle, and was monitored using ultraviolet-visible spectroscopy (UV-vis). The effect of Capsicum Annuum L. proteins on the formation of silver NPs was investigated using X-ray photoemission spectroscopy (XPS), electrochemical measurements, Fourier-transform infrared spectroscopy (FTIR) and differential spectrum techniques. The morphology and crystalline phase of the NPs were determined from transmission electron microscopy (TEM), selected area electron diffraction (SAED) and X-ray diffraction (XRD) spectra. The results indicated that the proteins, which have amine groups, played a reducing and controlling role during the formation of silver NPs in the solutions, and that the secondary structure of the proteins changed after reaction with silver ions. The crystalline phase of the NPs changed from polycrystalline to single crystalline and increased in size with increasing reaction time. A recognition–reduction–limited nucleation and growth model was suggested to explain the possible formation mechanism of silver NPs in Capsicum Annuum L. extract.

Chuanhao Li - One of the best experts on this subject based on the ideXlab platform.

  • rapid room temperature synthesis of amorphous selenium protein composites using Capsicum Annuum l extract
    Nanotechnology, 2007
    Co-Authors: Shikuo Li, Yuhua Shen, Xuerong Yu, Xiuzhen Zhang, Liangbao Yang, Chuanhao Li
    Abstract:

    We describe the formation of amorphous selenium (α-Se)/protein composites using Capsicum Annuum L extract to reduce selenium ions (SeO32−) at room temperature. The reaction occurs rapidly and the process is simple and easy to handle. A protein with a molecular weight of 30 kDa extracted from Capsicum Annuum L not only reduces the SeO32− ions to Se0, but also controls the nucleation and growth of Se0, and even participates in the formation of α-Se/protein composites. The size and shell thickness of the α-Se/protein composites increases with high Capsicum Annuum L extract concentration, and decreases with low reaction solution pH. The results suggest that this eco-friendly, biogenic synthesis strategy could be widely used for preparing inorganic/organic biocomposites. In addition, we also discuss the possible mechanism of the reduction of SeO32− ions by Capsicum Annuum L extract.

Xiuzhen Zhang - One of the best experts on this subject based on the ideXlab platform.

  • rapid room temperature synthesis of amorphous selenium protein composites using Capsicum Annuum l extract
    Nanotechnology, 2007
    Co-Authors: Shikuo Li, Yuhua Shen, Xuerong Yu, Xiuzhen Zhang, Liangbao Yang, Chuanhao Li
    Abstract:

    We describe the formation of amorphous selenium (α-Se)/protein composites using Capsicum Annuum L extract to reduce selenium ions (SeO32−) at room temperature. The reaction occurs rapidly and the process is simple and easy to handle. A protein with a molecular weight of 30 kDa extracted from Capsicum Annuum L not only reduces the SeO32− ions to Se0, but also controls the nucleation and growth of Se0, and even participates in the formation of α-Se/protein composites. The size and shell thickness of the α-Se/protein composites increases with high Capsicum Annuum L extract concentration, and decreases with low reaction solution pH. The results suggest that this eco-friendly, biogenic synthesis strategy could be widely used for preparing inorganic/organic biocomposites. In addition, we also discuss the possible mechanism of the reduction of SeO32− ions by Capsicum Annuum L extract.

  • Rapid, room-temperature synthesis of amorphous selenium/protein composites using Capsicum Annuum L extract
    Nanotechnology, 2007
    Co-Authors: Yuhua Shen, Xiuzhen Zhang, Anjian Xie, Liangbao Yang
    Abstract:

    We describe the formation of amorphous selenium (α-Se)/protein composites using Capsicum Annuum L extract to reduce selenium ions (SeO32−) at room temperature. The reaction occurs rapidly and the process is simple and easy to handle. A protein with a molecular weight of 30 kDa extracted from Capsicum Annuum L not only reduces the SeO32− ions to Se0, but also controls the nucleation and growth of Se0, and even participates in the formation of α-Se/protein composites. The size and shell thickness of the α-Se/protein composites increases with high Capsicum Annuum L extract concentration, and decreases with low reaction solution pH. The results suggest that this eco-friendly, biogenic synthesis strategy could be widely used for preparing inorganic/organic biocomposites. In addition, we also discuss the possible mechanism of the reduction of SeO32− ions by Capsicum Annuum L extract.