Titania Photocatalysts for Selective Oxidations in Water

Palmisano, Leonardo; Augugliaro, Vincenzo; Paola, A. Di; López, Elisa García; Loddo, Vittorio; Marcı̀, Giuseppe; Palmisano, Giovanni; Yurdakal, Sedat

doi:10.1002/cssc.201100196

Cited by 104 publications

(66 citation statements)

References 48 publications

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“…Brookite was also tested for the selective oxidation of 4-methoxybenzyl alcohol to 4-methoxybenzaldehyde (p-anisaldehyde) in water [131][132][133]. A good conversion and selectivity (52.5%) was obtained after reasonable irradiation times.…”

Section: Pure Brookitementioning

confidence: 99%

Brookite, the Least Known TiO2 Photocatalyst

2013

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Abstract:Brookite is the least studied TiO 2 photocatalyst due to the difficulties usually encountered in order to obtain it as a pure phase. In this review, a comprehensive survey of the different methods available for preparing brookite powders and films is reported. Attention has been paid both to the most traditional methods, such as hydrothermal processes at high temperatures and pressures, and to environmentally benign syntheses using water soluble compounds and water as the solvent. Papers reporting the photocatalytic activity of pure and brookite-based samples have been reviewed.

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Section: Pure Brookitementioning

confidence: 99%

Brookite, the Least Known TiO2 Photocatalyst

2013

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“…Titanium dioxide currently attracts large interest for its photocatalytic applications in the field of air and water remediation [1][2][3] and in the field of selective synthesis of chemicals [4][5][6]. TiO 2 exists in nature in three main polymorphs: anatase (tetragonal), rutile (tetragonal) and brookite (orthorhombic).…”

Section: Introductionmentioning

confidence: 99%

Preparation and Photoactivity of Nanocrystalline TiO2 Powders Obtained by Thermohydrolysis of TiOSO4

et al. 2013

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Nanocrystalline TiO 2 photocatalysts were synthesized in mild conditions by thermohydrolysis of TiOSO 4 in water at 100°C and post-calcination treatment at various temperatures. The TiO 2 powders were characterized by X-ray diffraction, X-ray photoelectron spectroscopy, specific surface area determinations, scanning electron microscopy and electron paramagnetic resonance measurements. The photoactivity of the samples was tested employing the photodegradation of 4-nitrophenol in liquid-solid regimen and the photooxidation of gaseous 2-propanol. The best results were obtained with the powder calcined at 600°C for 10 h. Surprisingly, the not calcined sample was the most active for the abatement of NO x under irradiation.

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“…Due to both low solubility of most of organic molecules in water and, also, to the generally low selectivity of the photocatalytic organic synthetic processes in water, photocatalytic synthetic reactions have been generally performed in organic solvents [20].…”

Section: Introductionmentioning

confidence: 99%

“…Selective oxidation of alcohol to carbonyl groups can be considered a key step in many organic syntheses [20]. The common practice to perform this oxidation usually consists in a catalytic process carried out in the presence of organic solvents at high temperature and pressure making use of stoichiometric oxygen donors that not only are expensive and toxic, but also produce large amounts of dangerous waste [2,[4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%