e-space
Manchester Metropolitan University's Research Repository

Titanium silicalite-1 macrostructures for photocatalytic removal of organic pollutants from aqueous media

Tosheva-Jivkova, L, Ormond, SPD, Ratova, M, Kelly, P, Edge, M and Mihailova, B (2016) Titanium silicalite-1 macrostructures for photocatalytic removal of organic pollutants from aqueous media. Journal of Porous Materials. ISSN 1573-4854

[img]
Preview

Download (687kB) | Preview

Abstract

Titanium silicalite-1 (TS-1) structures in the form of macroscopic beads with hierarchical porosity were prepared by the resin templating method. The Ti content within the samples was varied between 1 and 7 wt%, with corresponding surface areas ranging from 725 to 350 m2 g−1, respectively. The samples contained a large amount of amorphous material, which was necessary to achieve high mechanical stability of the beads. The TS-1 macrostructures were used as catalysts for the photocatalytic degradation of methylene blue (MB), and results were compared to the results for a commercial anatase nanopowder (CristalACTiV™ PC500). All TS-1 beads showed similar MB degradation rates independently of their Ti content, which was linked to variations in the surface areas and structure. The macroscopic shape of the TS-1 beads allowed easy recovery from the mother liquor upon decolouration of the MB solutions, which was highly beneficial compared to the reference anatase nanopowder. The TS-1 beads could be reused in subsequent photocatalytic cycles after decanting exhausted solutions and replacing with fresh MB solutions without any energy-consuming regeneration steps involved. The samples were tested in five consecutive cycles and MB degradation rates remained broadly unchanged during all tests.

Impact and Reach

Statistics

Activity Overview
6 month trend
268Downloads
6 month trend
268Hits

Additional statistics for this dataset are available via IRStats2.

Altmetric

Actions (login required)

View Item View Item