29
views
0
recommends
+1 Recommend
1 collections
    0
    shares
      • Record: found
      • Abstract: found
      • Article: found
      Is Open Access

      Recent Advances in the Application of Magnetic Nanoparticles as a Support for Homogeneous Catalysts

      review-article
      1 , 1 , 2 , *
      Nanomaterials
      MDPI
      magnetic nanoparticles, catalysis, magnetic recovery, homogeneous catalysts

      Read this article at

      Bookmark
          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

          Abstract

          Magnetic nanoparticles are a highly valuable substrate for the attachment of homogeneous inorganic and organic containing catalysts. This review deals with the very recent main advances in the development of various nanocatalytic systems by the immobilisation of homogeneous catalysts onto magnetic nanoparticles. We discuss magnetic core shell nanostructures (e.g., silica or polymer coated magnetic nanoparticles) as substrates for catalyst immobilisation. Then we consider magnetic nanoparticles bound to inorganic catalytic mesoporous structures as well as metal organic frameworks. Binding of catalytically active small organic molecules and polymers are also reviewed. After that we briefly deliberate on the binding of enzymes to magnetic nanocomposites and the corresponding enzymatic catalysis. Finally, we draw conclusions and present a future outlook for the further development of new catalytic systems which are immobilised onto magnetic nanoparticles.

          Related collections

          Most cited references76

          • Record: found
          • Abstract: not found
          • Article: not found

          Magnetically Separable Nanocatalysts: Bridges between Homogeneous and Heterogeneous Catalysis

            Bookmark
            • Record: found
            • Abstract: found
            • Article: not found

            Tat peptide-derivatized magnetic nanoparticles allow in vivo tracking and recovery of progenitor cells.

            The ability to track the distribution and differentiation of progenitor and stem cells by high-resolution in vivo imaging techniques would have significant clinical and research implications. We have developed a cell labeling approach using short HIV-Tat peptides to derivatize superparamagnetic nanoparticles. The particles are efficiently internalized into hematopoietic and neural progenitor cells in quantities up to 10-30 pg of superparamagnetic iron per cell. Iron incorporation did not affect cell viability, differentiation, or proliferation of CD34+ cells. Following intravenous injection into immunodeficient mice, 4% of magnetically CD34+ cells homed to bone marrow per gram of tissue, and single cells could be detected by magnetic resonance (MR) imaging in tissue samples. In addition, magnetically labeled cells that had homed to bone marrow could be recovered by magnetic separation columns. Localization and retrieval of cell populations in vivo enable detailed analysis of specific stem cell and organ interactions critical for advancing the therapeutic use of stem cells.
              Bookmark
              • Record: found
              • Abstract: found
              • Article: not found

              Multifunctional polymeric micelles as cancer-targeted, MRI-ultrasensitive drug delivery systems.

              We describe the development of multifunctional polymeric micelles with cancer-targeting capability via alpha(v)beta(3) integrins, controlled drug delivery, and efficient magnetic resonance imaging (MRI) contrast characteristics. Doxorubicin and a cluster of superparamagnetic iron oxide (SPIO) nanoparticles were loaded successfully inside the micelle core. The presence of cRGD on the micelle surface resulted in the cancer-targeted delivery to alpha(v)beta(3)-expressing tumor cells. In vitro MRI and cytotoxicity studies demonstrated the ultrasensitive MRI imaging and alpha(v)beta(3)-specific cytotoxic response of these multifunctional polymeric micelles.
                Bookmark

                Author and article information

                Journal
                Nanomaterials (Basel)
                Nanomaterials (Basel)
                nanomaterials
                Nanomaterials
                MDPI
                2079-4991
                02 April 2014
                June 2014
                : 4
                : 2
                : 222-241
                Affiliations
                [1 ]School of Chemistry and CRANN, Trinity College Dublin, Dublin 2, Ireland; E-Mail: govanj@ 123456tcd.ie
                [2 ]St. Petersburg National Research University of Information Technologies, Mechanics and Optics, St. Petersburg 197101, Russia
                Author notes
                [* ]Author to whom correspondence should be addressed; E-Mail: igounko@ 123456tcd.ie ; Tel.: +353-1-896-3543.
                Article
                nanomaterials-04-00222
                10.3390/nano4020222
                5304662
                28344220
                804c29f6-cadc-455d-8906-3cd2f16c4cad
                © 2014 by the authors; licensee MDPI, Basel, Switzerland.

                This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license ( http://creativecommons.org/licenses/by/3.0/).

                History
                : 16 February 2014
                : 17 March 2014
                : 20 March 2014
                Categories
                Review

                magnetic nanoparticles,catalysis,magnetic recovery,homogeneous catalysts

                Comments

                Comment on this article