Fabrication, Functionalization and Advanced Applications of Magnetic Hollow Materials in Confined Catalysis and Environmental Remediation

Nanoscale ◽  
2021 ◽  
Author(s):  
Gunjan Arora ◽  
Manavi Yadav ◽  
Rashmi Gaur ◽  
Radhika Gupta ◽  
Priya Yadav ◽  
...  
Keyword(s):  
Hybrid Materials ◽  
Environmental Remediation ◽  
Hollow Materials ◽  
Advanced Applications

Magnetic hollow-structured functional hybrid materials with unique architectures and preeminent properties have always been an area of extensive research. They represent a subtle collaboration of hollow architecture, mesoporous nanostructure and...

scholarly journals Preparation and Characterization of Montmorillonite/PEDOT-PSS and Diatomite/PEDOT-PSS Hybrid Materials. Study of Electrochemical Properties in Acid Medium

2020 ◽  
Vol 4 (2) ◽  
pp. 51 ◽  
Author(s):  
Mohamed Kiari ◽  
Raúl Berenguer ◽  
Francisco Montilla ◽  
Emilia Morallón
Keyword(s):  
Electron Transfer ◽  
Electrochemical Properties ◽  
Hybrid Materials ◽  
Environmental Remediation ◽  
Electroactive Material ◽  
Physico Chemical ◽  
Emerging Pollutant ◽  
Transfer Capability ◽  
Potential Applications ◽  
Concentration Sensitivity

The hybridization of clay minerals with conducting polymers receives great interest for different potential applications, including environmental remediation. This work studies and compares the electrochemical properties of two different clays, montmorillonite (Mont) and diatomite (Diat), and their respective clay/PEDOT-PSS hybrid materials in H2SO4 medium. The hybrid materials were prepared by electropolymerization of EDOT in the presence of PSS. The physico-chemical and electrochemical properties of both clays were analyzed by different techniques, and the influence of the clay properties on electropolymerization and the electroactivity of the resulting clay/PEDOT-PSS hybrids was investigated. Specifically, the Fe2+/Fe3+ redox probe and the oxidation of diclofenac, as a model pharmaceutical emerging pollutant, were used to test the electron transfer capability and oxidative response, respectively, of the clay/PEDOT-PSS hybrids. The results demonstrate that, despite its low electrical conductivity, the Mont is an electroactive material itself with good electron-transfer capability. Conversely, the Diat shows no electroactivity. The hybridization with PEDOT generally enhances the electroactivity of the clays, but the clay properties affect the electropolymerization efficiency and hybrids electroactivity, so the Mont/PEDOT displays improved electrochemical properties. It is demonstrated that clay/PEDOT-PSS hybrids exhibit diclofenac oxidation capability and diclofenac concentration sensitivity.

scholarly journals Polyamine-Based Organo-Clays for Polluted Water Treatment: Effect of Polyamine Structure and Content

Polymers ◽  
2019 ◽  
Vol 11 (5) ◽  
pp. 897 ◽  
Author(s):  
Cinzia Cristiani ◽  
Elena Maria Iannicelli-Zubiani ◽  
Giovanni Dotelli ◽  
Elisabetta Finocchio ◽  
Paola Gallo Stampino ◽  
...  
Keyword(s):  
Hybrid Materials ◽  
Environmental Remediation ◽  
Metal Ion ◽  
Solid Phase ◽  
Nir Spectroscopy ◽  
Linear Structure ◽  
Polluted Water ◽  
Amino Groups ◽  
Metal Ion Removal ◽  
Clay Matrix

Hybrid materials based on clays and polyamines are supposed to be efficient heavy metals sorbents due to the well-known adsorption behaviour of the clay matrix and to the coordination properties of un-protonated amino groups. For this purpose, a montmorillonite clay was modified with three different aliphatic polyamines: L6 and L10 have a linear structure with six and ten amino groups, respectively, while B14 is a branched polyamine with fourteen amino groups. Initial amine concentration was the main parameter investigated and data were fitted with Langmuir and Freundlich models. Interaction mechanisms between clay and amines were deeply investigated by different experimental techniques such as X-ray powder diffraction (XRD), thermal analysis measurements (DTG), Fourier Transform Infrared Spectroscopy (FT-IR) and diffuse reflectance (NIR) spectroscopy. Experimental results showed that the amount of amines efficiently immobilized in the solid phase can be increased by increasing the initial concentration of polyamines in the clay modification process. These data were best fitted by Freundlich model, indicating a presence of surface sites of different nature. In the resulting hybrid materials, neither the accessibility of the NH/NH2 groups of the amines, nor the accessibility of the structural OH of the clay was hindered. Several preliminary tests in La ions’ uptake and release from aqueous solution were also carried out. In the conditions used for this study, total metal ion removal was achieved at sufficiently low linear amine loadings (i.e., 0.45 mmol/gclay for the small L6 amine), suggesting that these hybrid materials are promising for the proposed application in environmental remediation.

Polydopamine-induced surface functionalization of carbon nanofibers for Pd deposition enabling enhanced catalytic activity for the oxygen reduction and evolution reactions

2019 ◽  
Vol 7 (13) ◽  
pp. 7396-7405 ◽  
Author(s):  
Wilson Tamakloe ◽  
Daniel Adjei Agyeman ◽  
Mihui Park ◽  
Junghoon Yang ◽  
Yong-Mook Kang
Keyword(s):  
Surface Modification ◽  
Catalytic Activity ◽  
Oxygen Reduction ◽  
Carbon Nanofibers ◽  
Hybrid Materials ◽  
Surface Functionalization ◽  
Design And Development ◽  
Detailed Understanding ◽  
Advanced Applications

A detailed understanding of the surface modification or coating of materials is becoming more important for the design and development of hybrid materials for their advanced applications.

Whole-cell based hybrid materials for green energy production, environmental remediation and smart cell-therapy

2011 ◽  
Vol 40 (2) ◽  
pp. 860 ◽  
Author(s):  
Alexandre Léonard ◽  
Philippe Dandoy ◽  
Emeric Danloy ◽  
Grégory Leroux ◽  
Christophe F. Meunier ◽  
...  
Keyword(s):  
Cell Therapy ◽  
Hybrid Materials ◽  
Environmental Remediation ◽  
Energy Production ◽  
Green Energy ◽  
Whole Cell

ChemInform Abstract: Whole-Cell Based Hybrid Materials for Green Energy Production, Environmental Remediation and Smart Cell-Therapy

ChemInform ◽  
2011 ◽  
Vol 42 (24) ◽  
pp. no-no
Author(s):  
Alexandre Leonard ◽  
Philippe Dandoy ◽  
Emeric Danloy ◽  
Gregory Leroux ◽  
Christophe F. Meunier ◽  
...  
Keyword(s):  
Cell Therapy ◽  
Hybrid Materials ◽  
Environmental Remediation ◽  
Energy Production ◽  
Green Energy ◽  
Whole Cell

History of Organic-Inorganic Hybrid Materials: Prehistory, Art, Science, and Advanced Applications

2018 ◽  
Vol 28 (27) ◽  
pp. 1704158 ◽  
Author(s):  
Marco Faustini ◽  
Lionel Nicole ◽  
Eduardo Ruiz-Hitzky ◽  
Clément Sanchez
Keyword(s):  
Hybrid Materials ◽  
Inorganic Hybrid ◽  
History Of ◽  
Advanced Applications

Covalent organic frameworks: an ideal platform for designing ordered materials and advanced applications

2021 ◽  
Author(s):  
Ruoyang Liu ◽  
Ke Tian Tan ◽  
Yifan Gong ◽  
Yongzhi Chen ◽  
Zhuoer Li ◽  
...  
Keyword(s):  
Covalent Organic Frameworks ◽  
2D And 3D ◽  
Advanced Applications

Covalent organic frameworks offer a molecular platform for integrating organic units into periodically ordered yet extended 2D and 3D polymers to create topologically well-defined polygonal lattices and built-in discrete micropores and/or mesopores.

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