The Experts below are selected from a list of 1110 Experts worldwide ranked by ideXlab platform

Weiguo Song - One of the best experts on this subject based on the ideXlab platform.

  • Flowerlike wse2 and ws2 microspheres one pot synthesis formation mechanism and application in heavy metal ion sequestration
    Chemical Communications, 2016
    Co-Authors: Dehong Chen, Weiguo Song, Fang Xia, Jeannie Z Y Tan, Jingchao Song, Rachel A Caruso
    Abstract:

    Flowerlike WSe2 and WS2 microspheres were synthesized by a facile and scalable one-pot solvothermal method. Their formation mechanism followed the reaction between dissolved W(CO)6 and dissolved S or melted Se without complete decomposition of W(CO)6 into tungsten. As novel efficient sorbents, WSe2 and WS2 demonstrated outstanding uptake capacities for Pb2+ and Hg2+.

  • Low-Cost Synthesis of Flowerlike α-Fe2O3 Nanostructures for Heavy Metal Ion Removal: Adsorption Property and Mechanism
    2016
    Co-Authors: Changyan Cao, Wensheng Yan, Junfa Zhu, Weiguo Song
    Abstract:

    Flowerlike α-Fe2O3 nanostructures were synthesized via a template-free microwave-assisted solvothermal method. All chemicals used were low-cost compounds and environmentally benign. These Flowerlike α-Fe2O3 nanostructures had high surface area and abundant hydroxyl on their surface. When tested as an adsorbent for arsenic and chromium removal, the Flowerlike α-Fe2O3 nanostructures showed excellent adsorption properties. The adsorption mechanism for AsV and CrVI onto Flowerlike α-Fe2O3 nanostructures was elucidated by X-ray photoelectron spectroscopy and synchrotron-based X-ray absorption near edge structure analysis. The results suggested that ion exchange between surface hydroxyl groups and AsV or CrVI species was accounted for by the adsorption. With maximum capacities of 51 and 30 mg g–1 for AsV and CrVI, respectively, these low-cost Flowerlike α-Fe2O3 nanostructures are an attractive adsorbent for the removal of AsV and CrVI from water

  • hierarchical Flowerlike magnesium oxide hollow spheres with extremely high surface area for adsorption and catalysis
    Journal of Materials Chemistry, 2016
    Co-Authors: Shuliang Yang, Changyan Cao, Peipei Huang, Li Peng, Yanan Zhu, Fang Wei, Yongbin Sun, Weiguo Song
    Abstract:

    Three-dimensionally hierarchical Flowerlike MgO hollow spheres with an extremely high surface area of 343 m(2) g(-1) were prepared through a facile and environmentally friendly solvothermal route. The maximum adsorption capacity at natural pH reached 569.7 mg g(-1) for the removal of arsenic in water, which is the highest among all of the reported adsorbents. In addition, Flowerlike MgO hollow spheres also displayed excellent catalytic activity and stability for the Claisen-Schmidt condensation reaction as a solid base catalyst.

  • superb adsorption capacity and mechanism of Flowerlike magnesium oxide nanostructures for lead and cadmium ions
    ACS Applied Materials & Interfaces, 2012
    Co-Authors: Jin Qu, Weiguo Song
    Abstract:

    A facile method based on microwave-assisted solvothermal process has been developed to synthesize Flowerlike MgO precursors, which were then transformed to MgO by simple calcinations. All the chemicals used (magnesium nitrate, urea, and ethanol) were low cost and environmentally benign. The products were characterized by X-ray powder diffraction, scanning electron microscopy, transmission electron microscopy, high-resolution TEM, and N2 adsorption-desorption methods. These Flowerlike MgO nanostructures had high surface area and showed superb adsorption properties for Pb(II) and Cd(II), with maximum capacities of 1980 mg/g and 1500 mg/g, respectively. All these values are significantly higher than those reported on other nanomaterials. A new adsorption mechanism involving solid–liquid interfacial cation exchange between magnesium and lead or cadmium cations was proposed and confirmed.

  • low cost synthesis of Flowerlike α fe2o3 nanostructures for heavy metal ion removal adsorption property and mechanism
    Langmuir, 2012
    Co-Authors: Changyan Cao, Wensheng Yan, Junfa Zhu, Weiguo Song
    Abstract:

    Flowerlike α-Fe2O3 nanostructures were synthesized via a template-free microwave-assisted solvothermal method. All chemicals used were low-cost compounds and environmentally benign. These Flowerlike α-Fe2O3 nanostructures had high surface area and abundant hydroxyl on their surface. When tested as an adsorbent for arsenic and chromium removal, the Flowerlike α-Fe2O3 nanostructures showed excellent adsorption properties. The adsorption mechanism for AsV and CrVI onto Flowerlike α-Fe2O3 nanostructures was elucidated by X-ray photoelectron spectroscopy and synchrotron-based X-ray absorption near edge structure analysis. The results suggested that ion exchange between surface hydroxyl groups and AsV or CrVI species was accounted for by the adsorption. With maximum capacities of 51 and 30 mg g–1 for AsV and CrVI, respectively, these low-cost Flowerlike α-Fe2O3 nanostructures are an attractive adsorbent for the removal of AsV and CrVI from water.

Hongzhong Liu - One of the best experts on this subject based on the ideXlab platform.

  • Magnetic Driving Flowerlike Soft Platform: Biomimetic Fabrication and External Regulation
    ACS Applied Materials and Interfaces, 2016
    Co-Authors: Wei Gao, Xingzhe Wang, Lanlan Wang, Xiaoliang Wang, Hongzhong Liu
    Abstract:

    Nature-inspired actuators that can be driven by various stimuli are an emerging application in mobile microrobotics and microfluidics. In this study, a soft and multiple-environment-adaptive robotic platform with ferromagnetic particles impregnated in silicon-based polymer is adopted to fabricate microrobots for minimally invasive locomotion and control interaction with their environment. As an intelligent structure of platform, the change of its bending, deformation, and flapping displacement is rapid, reversible, and continuously controllable with sweeping and multicycle magnetic actuation. The bending angle of the soft platform (0.2 mm in thickness and 8.5 mm in length) can be deflected up to almost 90° within 2.7 s. Experiments demonstrated that the flexible platform of human skin-like material in various shapes, that is, Flowerlike shapes, can transport a cargo to targeted area in air and a variety of liquids. It indicates excellent magnetic-actuation ability and good controllability. The results may...

  • Magnetic Driving Flowerlike Soft Platform: Biomimetic Fabrication and External Regulation
    2016
    Co-Authors: Wei Gao, Xingzhe Wang, Lanlan Wang, Hongzhong Liu
    Abstract:

    Nature-inspired actuators that can be driven by various stimuli are an emerging application in mobile microrobotics and microfluidics. In this study, a soft and multiple-environment-adaptive robotic platform with ferromagnetic particles impregnated in silicon-based polymer is adopted to fabricate microrobots for minimally invasive locomotion and control interaction with their environment. As an intelligent structure of platform, the change of its bending, deformation, and flapping displacement is rapid, reversible, and continuously controllable with sweeping and multicycle magnetic actuation. The bending angle of the soft platform (0.2 mm in thickness and 8.5 mm in length) can be deflected up to almost 90° within 2.7 s. Experiments demonstrated that the flexible platform of human skin-like material in various shapes, that is, Flowerlike shapes, can transport a cargo to targeted area in air and a variety of liquids. It indicates excellent magnetic-actuation ability and good controllability. The results may be helpful in developing a magnetic-driven carrying platform, which can be operated like a human finger to manipulate biological objects such as single cells, microbeads, or embryos. Especially, it is likely to be used in harsh chemical and physical circumstances

Changyan Cao - One of the best experts on this subject based on the ideXlab platform.

  • hierarchical Flowerlike magnesium oxide hollow spheres with extremely high surface area for adsorption and catalysis
    Journal of Materials Chemistry, 2016
    Co-Authors: Shuliang Yang, Changyan Cao, Peipei Huang, Li Peng, Yanan Zhu, Fang Wei, Yongbin Sun, Weiguo Song
    Abstract:

    Three-dimensionally hierarchical Flowerlike MgO hollow spheres with an extremely high surface area of 343 m(2) g(-1) were prepared through a facile and environmentally friendly solvothermal route. The maximum adsorption capacity at natural pH reached 569.7 mg g(-1) for the removal of arsenic in water, which is the highest among all of the reported adsorbents. In addition, Flowerlike MgO hollow spheres also displayed excellent catalytic activity and stability for the Claisen-Schmidt condensation reaction as a solid base catalyst.

  • Low-Cost Synthesis of Flowerlike α-Fe2O3 Nanostructures for Heavy Metal Ion Removal: Adsorption Property and Mechanism
    2016
    Co-Authors: Changyan Cao, Wensheng Yan, Junfa Zhu, Weiguo Song
    Abstract:

    Flowerlike α-Fe2O3 nanostructures were synthesized via a template-free microwave-assisted solvothermal method. All chemicals used were low-cost compounds and environmentally benign. These Flowerlike α-Fe2O3 nanostructures had high surface area and abundant hydroxyl on their surface. When tested as an adsorbent for arsenic and chromium removal, the Flowerlike α-Fe2O3 nanostructures showed excellent adsorption properties. The adsorption mechanism for AsV and CrVI onto Flowerlike α-Fe2O3 nanostructures was elucidated by X-ray photoelectron spectroscopy and synchrotron-based X-ray absorption near edge structure analysis. The results suggested that ion exchange between surface hydroxyl groups and AsV or CrVI species was accounted for by the adsorption. With maximum capacities of 51 and 30 mg g–1 for AsV and CrVI, respectively, these low-cost Flowerlike α-Fe2O3 nanostructures are an attractive adsorbent for the removal of AsV and CrVI from water

  • low cost synthesis of Flowerlike α fe2o3 nanostructures for heavy metal ion removal adsorption property and mechanism
    Langmuir, 2012
    Co-Authors: Changyan Cao, Wensheng Yan, Junfa Zhu, Weiguo Song
    Abstract:

    Flowerlike α-Fe2O3 nanostructures were synthesized via a template-free microwave-assisted solvothermal method. All chemicals used were low-cost compounds and environmentally benign. These Flowerlike α-Fe2O3 nanostructures had high surface area and abundant hydroxyl on their surface. When tested as an adsorbent for arsenic and chromium removal, the Flowerlike α-Fe2O3 nanostructures showed excellent adsorption properties. The adsorption mechanism for AsV and CrVI onto Flowerlike α-Fe2O3 nanostructures was elucidated by X-ray photoelectron spectroscopy and synchrotron-based X-ray absorption near edge structure analysis. The results suggested that ion exchange between surface hydroxyl groups and AsV or CrVI species was accounted for by the adsorption. With maximum capacities of 51 and 30 mg g–1 for AsV and CrVI, respectively, these low-cost Flowerlike α-Fe2O3 nanostructures are an attractive adsorbent for the removal of AsV and CrVI from water.

Tao Chen - One of the best experts on this subject based on the ideXlab platform.

  • hierarchical Flowerlike gold nanoparticles labeled immunochromatography test strip for highly sensitive detection of escherichia coli o157 h7
    Langmuir, 2015
    Co-Authors: Lei Zhang, Youju Huang, Jingyun Wang, Yun Rong, Weihua Lai, Jiawei Zhang, Tao Chen
    Abstract:

    Gold nanoparticles (AuNPs) labeled lateral-flow test strip immunoassay (LFTS) has been widely used in biomedical, feed/food, and environmental analysis fields. Conventional ILFS assay usually uses spherical AuNPs as labeled probes and shows low detection sensitivity, which further limits its widespread practical application. Unlike spherical AuNP used as labeled probe in conventional ILFS, in our present study, a hierarchical Flowerlike AuNP specific probe was designed for LFTS and further used to detect Escherichia coli O157:H7 (E. coli O157:H7). Three types of hierarchical Flowerlike AuNPs, such as tipped Flowerlike, popcornlike, and large-sized Flowerlike AuNPs were synthesized in a one-step method. Compared with other two kinds of Au particles, tipped Flowerlike AuNPs probes for LFTS particularly exhibited highly sensitive detection of E. coli O157:H7. The remarkable improvement of detection sensitivity of tipped Flowerlike AuNPs probes can be achieved even as low as 10(3) colony-forming units (CFU)/mL by taking advantages of its appropriate size and hierarchical structures, which is superior over the detection performance of conventional LFTS. Using this novel tipped flower AuNPs probes, quantitative detection of E. coli O157:H7 can be obtained partially in a wide concentration range with good repeatability. This hierarchical tipped flower-shaped AuNPs probe for LFTS is promising for the practical applications in widespread analysis fields.

  • Hierarchical Flowerlike Gold Nanoparticles Labeled Immunochromatography Test Strip for Highly Sensitive Detection of Escherichia coli O157:H7
    2015
    Co-Authors: Lei Zhang, Youju Huang, Jingyun Wang, Yun Rong, Weihua Lai, Jiawei Zhang, Tao Chen
    Abstract:

    Gold nanoparticles (AuNPs) labeled lateral-flow test strip immunoassay (LFTS) has been widely used in biomedical, feed/food, and environmental analysis fields. Conventional ILFS assay usually uses spherical AuNPs as labeled probes and shows low detection sensitivity, which further limits its widespread practical application. Unlike spherical AuNP used as labeled probe in conventional ILFS, in our present study, a hierarchical Flowerlike AuNP specific probe was designed for LFTS and further used to detect Escherichia coli O157:H7 (E. coli O157:H7). Three types of hierarchical Flowerlike AuNPs, such as tipped Flowerlike, popcornlike, and large-sized Flowerlike AuNPs were synthesized in a one-step method. Compared with other two kinds of Au particles, tipped Flowerlike AuNPs probes for LFTS particularly exhibited highly sensitive detection of E. coli O157:H7. The remarkable improvement of detection sensitivity of tipped Flowerlike AuNPs probes can be achieved even as low as 103 colony-forming units (CFU)/mL by taking advantages of its appropriate size and hierarchical structures, which is superior over the detection performance of conventional LFTS. Using this novel tipped flower AuNPs probes, quantitative detection of E. coli O157:H7 can be obtained partially in a wide concentration range with good repeatability. This hierarchical tipped flower-shaped AuNPs probe for LFTS is promising for the practical applications in widespread analysis fields

Wei Gao - One of the best experts on this subject based on the ideXlab platform.

  • Magnetic Driving Flowerlike Soft Platform: Biomimetic Fabrication and External Regulation
    ACS Applied Materials and Interfaces, 2016
    Co-Authors: Wei Gao, Xingzhe Wang, Lanlan Wang, Xiaoliang Wang, Hongzhong Liu
    Abstract:

    Nature-inspired actuators that can be driven by various stimuli are an emerging application in mobile microrobotics and microfluidics. In this study, a soft and multiple-environment-adaptive robotic platform with ferromagnetic particles impregnated in silicon-based polymer is adopted to fabricate microrobots for minimally invasive locomotion and control interaction with their environment. As an intelligent structure of platform, the change of its bending, deformation, and flapping displacement is rapid, reversible, and continuously controllable with sweeping and multicycle magnetic actuation. The bending angle of the soft platform (0.2 mm in thickness and 8.5 mm in length) can be deflected up to almost 90° within 2.7 s. Experiments demonstrated that the flexible platform of human skin-like material in various shapes, that is, Flowerlike shapes, can transport a cargo to targeted area in air and a variety of liquids. It indicates excellent magnetic-actuation ability and good controllability. The results may...

  • Magnetic Driving Flowerlike Soft Platform: Biomimetic Fabrication and External Regulation
    2016
    Co-Authors: Wei Gao, Xingzhe Wang, Lanlan Wang, Hongzhong Liu
    Abstract:

    Nature-inspired actuators that can be driven by various stimuli are an emerging application in mobile microrobotics and microfluidics. In this study, a soft and multiple-environment-adaptive robotic platform with ferromagnetic particles impregnated in silicon-based polymer is adopted to fabricate microrobots for minimally invasive locomotion and control interaction with their environment. As an intelligent structure of platform, the change of its bending, deformation, and flapping displacement is rapid, reversible, and continuously controllable with sweeping and multicycle magnetic actuation. The bending angle of the soft platform (0.2 mm in thickness and 8.5 mm in length) can be deflected up to almost 90° within 2.7 s. Experiments demonstrated that the flexible platform of human skin-like material in various shapes, that is, Flowerlike shapes, can transport a cargo to targeted area in air and a variety of liquids. It indicates excellent magnetic-actuation ability and good controllability. The results may be helpful in developing a magnetic-driven carrying platform, which can be operated like a human finger to manipulate biological objects such as single cells, microbeads, or embryos. Especially, it is likely to be used in harsh chemical and physical circumstances