Results 161 to 170 of about 3,174 (219)

Visible light-driven ligand-to-metal charge transfer-mediated selective cleavage of β-O-4 lignin model compounds: a greener route to lignin valorization.

Green Chem
Khan A, Evans LW, Martin DBC.
europepmc   +1 more source

Preparation of photocatalytic brookite thin films

Thin Solid Films, 2007
Pure brookite films were deposited from a brookite dispersion obtained by peptizing a mixture brookite–rutile prepared by thermolysis of TiCl4 in a HCl solution. The films were characterised by X-ray diffraction and Raman spectroscopy. The photoactivity of the samples was tested by using the photo-oxidation of 2-propanol in gas–solid regime as a probe ...
A Di Paola, M Addamo, Marianna Bellardita   +2 more
exaly   +3 more sources

TIO2 brookite: Properties, synthesis and applications

, 2017
Brookite is one of the less studied polymorphic phases of titanium dioxide. Indeed, synthetic procedures affording brookite as a pure phase were not straightforward and have been only recently optimized. For this reason, brookite has received particular attention in the last years, especially as a promising photocatalytic material for environmental ...
Parrino, Francesco, Bellardita, Marianna, Paola, Agatino Di, Palmisano, Leonardo   +3 more
openaire   +3 more sources

Photocatalytic activity of nanocrystalline TiO2 (brookite, rutile and brookite-based) powders prepared by thermohydrolysis of TiCl4 in aqueous chloride solutions

Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2008
Nanocrystalline TiO2 powders were synthesized by thermohydrolysis of TiCl4 in HCl or NaCl aqueous solutions. Rutile, mixtures of brookite and rutile or mixtures of anatase, brookite and rutile were obtained depending on the acidity of the medium ...
Agatino Di Paola, Marianna Bellardita, Renzo Campostrini   +2 more
exaly   +2 more sources

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Brookite TiO2 nanoflowers

Chemical Communications, 2009
Pure brookite TiO(2) nanoflowers consisting of single crystalline nanorods were synthesized for the first time using a facile one-step hydrothermal process.
Bin, Zhao, Feng, Chen, Qiwei, Huang, Jinlong, Zhang   +3 more
openaire   +2 more sources

Absolute crystallinity and photocatalytic activity of brookite TiO2 samples

Applied Catalysis B: Environmental, 2017
This study reports a method to determine the absolute crystallinity of partly crystalline brookite TiO2 photocatalysts. A natural, a commercial and various home-prepared brookite powders were characterized by X-ray diffraction analysis, Raman ...
Marianna Bellardita, Agatino Di Paola, Bartolomeo Megna   +2 more
exaly   +2 more sources

Hydrothermal Synthesis of Brookite

Chemistry Letters, 1999
Abstract Hydrothermal synthesis of brookite was performed at 110-200 °C within 24 h using amorphous TiO2 and sodium salts as the starting material. Brookite was obtained as an almost single phase at 200 °C and TiO2 / NaOH mole ratio ≅ 1.
Takako Nagase, Takeo Ebina, Takashi Iwasaki, Hiromichi Hayashi, Yoshio Onodera, Maya Chatterjee   +5 more
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Brookite-type TiO2 nanotubes

Chemical Communications, 2008
Brookite-type TiO(2) nanotubes with crystalline multilayer walls have been synthesized for the first time via a simple hydrothermal route.
Qixin, Deng, Mingdeng, Wei, Xiaokun, Ding, Lilong, Jiang, Binghuo, Ye, Kemei, Wei   +5 more
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Studies on the brookite-rutile transformation

Transactions of the Faraday Society, 1961
Brookite, the orthorhombic modification of titanium dioxide, transforms to the tetragonal modification, rutile, on heating. The kinetics and energetics of the transformation have been studied. Below 715±10°C, the rate of transformation is extremely slow. There appears to be little or no induction time.
Rao, CNR, Yoganarasimhan, SR, Faeth, PA
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