High activity of brookite TiO2 nanoparticles in the photocatalytic abatement of ammonia in water

被引：49

作者：

Altomare, Marco ^{[1
]}

Dozzi, Maria Vittoria ^{[1
]}

Chiarello, Gian Luca ^{[1
]}

Di Paola, Agatino ^{[2
]}

Palmisano, Leonardo ^{[2
]}

Selli, Elena ^{[1
]}

机构：

[1] Univ Milan, Dipartimento Chim, I-20133 Milan, Italy

[2] Univ Palermo, Dipartimento Energia Ingn Informaz & Modelli Mate, I-90128 Palermo, Italy

来源：

CATALYSIS TODAY | 2015年 / 252卷

关键词：

Photocatalysis; TiO2; Brookite; Thermo-hydrolysis; Ammonia oxidation; AQUEOUS AMMONIA; METAL NANOPARTICLES; OXIDATION; NH3; NITROGEN; TICL4; THERMOHYDROLYSIS; PHOTOOXIDATION; REDUCTION; SURFACE;

D O I：

10.1016/j.cattod.2014.09.031

中图分类号：

O69 [应用化学];

学科分类号：

070301 [无机化学];

摘要：

The effects of the TiO2 crystal structure and its surface modification with Pt nanoparticles on the photocatalytic oxidation of NH3 in the aqueous phase were studied with home-made TiO2 photocatalyst powders synthesized by a thermo-hydrolysis approach that allowed a fine control of the crystallographic phase composition. Ammonia conversion and the selectivity toward mildly oxidized N-2 and highly oxidized nitrite and nitrate anions were monitored during the runs. Pure brookite powders modified by Pt nanoparticles, deposited either from a colloidal suspension or by deposition-precipitation, were found to be the most efficient photocatalysts in NH3 degradation, with a desired good selectivity toward innocuous N-2. The photo-activity in NH3 oxidation was correlated to the crystallographic features of the investigated TiO2-based materials, also taking into account the effects induced on the reaction paths by the presence of Pt nanoparticles on TiO2. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：184 / 189

页数：6

共 34 条

[1]

REMOVING NITROGEN FROM WASTE-WATER [J].

ADAMS, CE .

ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1973, 7 (08) :696-701

[2]

Sustainable nitrogen elimination biotechnologies: A review [J].

Ahn, Young-Ho .

PROCESS BIOCHEMISTRY, 2006, 41 (08) :1709-1721

[3]

Effects of metal nanoparticles deposition on the photocatalytic oxidation of ammonia in TiO2 aqueous suspensions [J].

Altomare, Marco ;

Selli, Elena .

CATALYSIS TODAY, 2013, 209 :127-133

[4]

Photocatalytic abatement of ammonia in nitrogen-containing effluents [J].

Altomare, Marco ;

Chiarello, Gian Luca ;

Costa, Annamaria ;

Guarino, Marcella ;

Selli, Elena .

CHEMICAL ENGINEERING JOURNAL, 2012, 191 :394-401

[5]

Photocatalytic degradation of organic molecules in water: Photoactivity and reaction paths in relation to TiO2 particles features [J].

Bernardini, Cecilia ;

Cappelletti, Giuseppe ;

Dozzi, Maria Vittoria ;

Selli, Elena .

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY, 2010, 211 (2-3) :185-192

[6]

BRAVO A, 1993, J CHEM RES-S, P376

[7]

Adsorption Configuration and Dissociative Reaction of NH3 on Anatase (101) Surface with and without Hydroxyl Groups [J].

Chang, Jee-Gong ;

Ju, Shin-Pon ;

Chang, Ching-Sheng ;

Chen, Hsin-Tsung .

JOURNAL OF PHYSICAL CHEMISTRY C, 2009, 113 (16) :6663-6672

[8]

Effect of titanium dioxide crystalline structure on the photocatalytic production of hydrogen [J].

Chiarello, Gian Luca ;

Di Paola, Agatino ;

Palmisano, Leonardo ;

Selli, Elena .

PHOTOCHEMICAL & PHOTOBIOLOGICAL SCIENCES, 2011, 10 (03) :355-360

[9]

Hydrogen production by photocatalytic steam reforming of methanol on noble metal-modified TiO2 [J].

Chiarello, Gian Luca ;

Aguirre, Myriam H. ;

Selli, Elena .

JOURNAL OF CATALYSIS, 2010, 273 (02) :182-190

[10]

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

Di Paola, Agatino ;

Cufalo, Giovanni ;

Addamo, Maurizio ;

Bellardita, Marianna ;

Campostrini, Renzo ;

Ischia, Marco ;

Ceccato, Riccardo ;

Palmisano, Leonardo .

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 2008, 317 (1-3) :366-376

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