期刊
RSC ADVANCES
卷 4, 期 60, 页码 31799-31809出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3ra48030e
关键词
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资金
- EPSRC [EP/D038499/1, EP/F01919X/1]
- Sun Chemical
- WCU Program through the National Research Foundation of Korea (NRF) -Ministry of Education, Science and Technology [R31-10069]
- University of Nottingham (EPSRC) [EP/F019750/1]
- EPSRC [EP/F019750/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/F01919X/1, EP/F019750/1, EP/D038499/1] Funding Source: researchfish
Continuous hydrothermal flow synthesis (CHFS) has been used as a rapid and clean, synthetic method to produce a range of crystalline nanoparticles in the Ti-Zn-O binary system. The nanopowders were prepared from aqueous solutions of titanium(IV) bis(ammonium lactato)dihydroxide (TIBALD) and hydrated zinc nitrate, respectively, using a CHFS reactor which uses superheated water (at 400 degrees C and 24.1 MPa) as a reagent and crystallizing medium. The resulting nanopowders were heat-treated at 850 degrees C for five hours in air to give photoactive semiconductor mixtures of rutile and zinc oxide and/or zinc titanates. The as-prepared powders and their corresponding heat-treated mixed phase photocatalysts were characterized using powder X-ray synchrotron diffraction, transmission electron microscopy, BET surface area measurement, X-ray photoelectron spectroscopy and UV-Vis spectrophotometry. Because of the interest for these materials in UVA and UVB attenuating materials, the UV-Vis profiles of the nanocomposites and solid solutions were studied. Photocatalytic activity of the samples towards the decolourisation of methylene blue dye was also assessed.
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