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

      Preparation of hollow TiO 2 nanoparticles through TiO 2 deposition on polystyrene latex particles and characterizations of their structure and photocatalytic activity

      research-article

      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

          In a mixed solvent of water and ethanol, polystyrene/titanium dioxide (PSt/TiO 2) composite particles of core-shell structure were prepared by hydrolysis of tetrabutyl titanate in the presence of cationic PSt particles or anionic PSt particles surface-treated using γ-aminopropyl triethoxysilane. Hollow TiO 2 particles were obtained through calcination of the PSt/TiO 2 core-shell particles to burn off the PSt core or through dissolution of the core by tetrahydrofuran (THF). An alternative process constituted of preheating the PSt/TiO 2 particles at 200°C to allow partial crystallization followed by calcination or PSt dissolution by THF. The outcome TiO 2 particles thus prepared were examined by TEM, and hollow TiO 2 particles were observed. The crystalline phase structure and phase transformation were characterized, which revealed that preheating before the removal of the PSt core was useful to achieve the desired hollow TiO 2 particles, and the calcination process was beneficial to the formation of anatase and rutile structures. The tests of TiO 2 particles as catalyst in the photodegradation of Rhodamine B demonstrated that a much higher catalytic activity was observed with the TiO 2 hollow particles prepared through calcination combined with preheating.

          Related collections

          Most cited references22

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

          Multilayered Titania, Silica, and Laponite Nanoparticle Coatings on Polystyrene Colloidal Templates and Resulting Inorganic Hollow Spheres

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

            The thermal degradation of polystyrene nanocomposite

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

              Preparation and Characterization of Titania-Coated Polystyrene Spheres and Hollow Titania Shells

                Bookmark

                Author and article information

                Contributors
                Journal
                Nanoscale Res Lett
                Nanoscale Res Lett
                Nanoscale Research Letters
                Springer
                1931-7573
                1556-276X
                2012
                24 November 2012
                : 7
                : 1
                : 646
                Affiliations
                [1 ]College of Chemistry and Chemical Engineering, University of Jinan, Jinan, 250022, China
                Article
                1556-276X-7-646
                10.1186/1556-276X-7-646
                3533932
                23176612
                192b365b-c72a-4f11-b613-fffa548cc3e3
                Copyright ©2012 Wang et al.; licensee Springer.

                This is an Open Access article distributed under the terms of the Creative Commons Attribution License ( http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

                History
                : 23 September 2012
                : 15 November 2012
                Categories
                Nano Express

                Nanomaterials
                interfaces,calcination,pst/tio2 core-shell composites,surfaces,nanostructured inorganic materials,preheating,sol-gel processes,photodegradation catalysis

                Comments

                Comment on this article