Title
|
|
|
|
Anatase nanoparticle coating on porous COK-12 platelets as highly active and reusable photocatalysts
| |
Author
|
|
|
|
| |
Abstract
|
|
|
|
Nanoscale TiO2 photocatalysts are widely used for biomedical applications, self-cleaning processes and wastewater treatments. The impregnation/deposition of TiO2 nanoparticles is indispensable for facile handling and separation as well as the improvement of their photocatalytic performance. In the present study, ordered mesoporous COK-12 silica thin platelets with a high-aspect-ratio and rough surfaces are demonstrated as a potential nanoporous support for homogeneous TiO2 nanoparticle coatings with high loading up to 16.7 wt%. The photocatalytic composite of COK-12 platelets and TiO2 nanoparticles is characterized in detail by HRSEM, SAXS, XRD, N2 physisorption analysis, solid-state UV-vis spectroscopy, HAADF-STEM, EDX analysis, and electron tomography. HAADF-STEM-EDX and electron tomography studies reveal a homogeneous dispersion of nanosized TiO2 nanoparticles over COK-12 platelets. The final composite material with anatase TiO2 nanoparticles that demonstrate a blueshifted semiconductor band gap energy of 3.2 eV coated on a highly porous COK-12 support shows exceptional photocatalytic catalytic activity for photodegradation of organic dyes (rhodamine 6G and methylene blue) and an organic pollutant (1-adamantanol) under UV light radiation, outperforming the commercial P25 TiO2 (Degussa) catalyst. |
| |
Language
|
|
|
|
English
| |
Source (journal)
|
|
|
|
RSC advances
| |
Publication
|
|
|
|
2016
| |
ISSN
|
|
|
|
2046-2069
| |
DOI
|
|
|
|
10.1039/C6RA06141A
| |
Volume/pages
|
|
|
|
6
:52
(2016)
, p. 46678-46685
| |
ISI
|
|
|
|
000377254800070
| |
Full text (Publisher's DOI)
|
|
|
|
| |
Full text (open access)
|
|
|
|
| |
|