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In Situ Formation of Micropore-Rich Titanium Dioxide from Metal–Organic Framework Templates
- Source :
- ACS Applied Materials & Interfaces. 10:36933-36940
- Publication Year :
- 2018
- Publisher :
- American Chemical Society (ACS), 2018.
-
Abstract
- Phase and porosity control in titanium dioxide (TiO2) is essential for the optimization of its photocatalytic activity. However, concurrent control over these two parameters remains challenging. Here, a novel metal-organic framework templating strategy is demonstrated for the preparation of highly microporous anatase TiO2. In situ encapsulation of Ti precursor in ZIF-8 cavities, followed by hydrolysis and etching, produces anatase TiO2 with a high Brunauer-Emmett-Teller surface area of 335 m2·g-1 and a micropore surface area ratio of 48%. Photocatalytic hydrogen generation catalyzed by the porous TiO2 can reach a rate of 2459 μmol·g-1·h-1. The measured photocatalytic activity is found to be positively correlated to the surface area, highlighting the importance of porosity control in heterogeneous photocatalysts.
- Subjects :
- Anatase
Materials science
02 engineering and technology
Microporous material
010402 general chemistry
021001 nanoscience & nanotechnology
01 natural sciences
0104 chemical sciences
Catalysis
chemistry.chemical_compound
Chemical engineering
chemistry
Titanium dioxide
Photocatalysis
General Materials Science
Metal-organic framework
0210 nano-technology
Porosity
Photocatalytic water splitting
Subjects
Details
- ISSN :
- 19448252 and 19448244
- Volume :
- 10
- Database :
- OpenAIRE
- Journal :
- ACS Applied Materials & Interfaces
- Accession number :
- edsair.doi.dedup.....2adf9779e98dcc12c99e392f9fd1cdc7