Inorganic-organic core-shell titania nanoparticles for efficient visible light activated photocatalysis

被引：89

作者：

Moustakas, N. G. ^{[1
]}

Kontos, A. G. ^{[1
]}

Likodimos, V. ^{[1
]}

Katsaros, F. ^{[1
]}

Boukos, N. ^{[1
]}

Tsoutsou, D. ^{[1
]}

Dimoulas, A. ^{[1
]}

Romanos, G. E. ^{[1
]}

Dionysiou, D. D. ^{[2
]}

Falaras, P. ^{[1
]}

机构：

[1] Natl Ctr Sci Res Demokritos, Inst Adv Mat Physicochem Proc Nanotechnol & Micro, Div Phys Chem, Athens 15310, Greece

[2] Univ Cincinnati, Environm Engn & Sci Program, Cincinnati, OH 45221 USA

来源：

APPLIED CATALYSIS B-ENVIRONMENTAL | 2013年 / 130卷

关键词：

Visible light active TiO2; Core-shell structure; Solar photocatalysis; HRTEM; EPR; N-DOPED TIO2; METHYLENE-BLUE; DIOXIDE PHOTOCATALYSTS; S-TRIAZINE; NITROGEN; DEGRADATION; SURFACE; DRIVEN; FILMS; IRRADIATION;

D O I：

10.1016/j.apcatb.2012.10.007

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Nanostructured modified TiO2 (m-TiO2) was synthesized using the gel combustion method based on the calcination of an acidified alkoxide solution mixed with urea. The materials were characterized by Raman, FT-IR and UV-vis diffuse reflectance spectroscopies, transmission (TEM) and scanning electron microscopies (SEM), X-ray photoelectron spectroscopy (XPS) and electron paramagnetic resonance (EPR), in comparison with reference material untreated with urea (ref-TiO2). The effect of both the urea content and calcination temperature were optimized, providing the optimal absorption threshold of 2.19 eV for solar light harvesting. The photocatalytic performance of the m-TiO2 powder was tested for the degradation of methylene blue (MB) azo dye under UVA (350-365 nm), visible (440-460 nm), and daylight (350-750 nm) illumination. The hybrid inorganic/organic material shows exceptional physicochemical properties and significant photocatalytic activity, especially in the visible, attributed to sensitization of the TiO2 by a thin porous layer of carbonacious species in controlled core-shell morphology. (c) 2012 Elsevier B.V. All rights reserved.

引用

页码：14 / 24

页数：11

共 41 条

[1] Structure and properties of nitrogen-doped titanium dioxide thin films produced by reactive magnetron sputtering [J].

Abadias, G. ;

Paumier, F. ;

Eyidi, D. ;

Guerin, P. ;

Girardeau, T. .

SURFACE AND INTERFACE ANALYSIS, 2010, 42 (6-7) :970-973

[2] Comparison of the Melon Nanocomposites in Structural Properties and Photocatalytic Activities [J].

Ang, Thiam Peng ;

Chan, Yen Mei .

JOURNAL OF PHYSICAL CHEMISTRY C, 2011, 115 (32) :15965-15972

[3] Synthesis, Characterization, and Activity of Visible-Light-Driven Nitrogen-Doped TiO2-SiO2 Mixed Oxide Photocatalysts [J].

Ang, Thiam Peng ;

Toh, Choon Sian ;

Han, Yi-Fan .

JOURNAL OF PHYSICAL CHEMISTRY C, 2009, 113 (24) :10560-10567

[4] Visible-light photocurrent response of TiO2-polyheptazine hybrids: evidence for interfacial charge-transfer absorption [J].

Bledowski, Michal ;

Wang, Lidong ;

Ramakrishnan, Ayyappan ;

Khavryuchenko, Oleksiy V. ;

Khavryuchenko, Volodymyr D. ;

Ricci, P. Carlo ;

Strunk, Jennifer ;

Cremer, Till ;

Kolbeck, Claudia ;

Beranek, Radim .

PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2011, 13 (48) :21511-21519

[5] Increasing Solar Absorption for Photocatalysis with Black Hydrogenated Titanium Dioxide Nanocrystals [J].

Chen, Xiaobo ;

Liu, Lei ;

Yu, Peter Y. ;

Mao, Samuel S. .

SCIENCE, 2011, 331 (6018) :746-750

[6] A sol-gel combustion synthesis method for TiO2 powders with enhanced photocatalytic activity [J].

Chung, Shyan-Lung ;

Wang, Ching-Mei .

JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY, 2011, 57 (01) :76-85

[7] N-doped TiO2:: Theory and experiment [J].

Di Valentin, Cristiana ;

Finazzi, Emanuele ;

Pacchioni, Gianfranco ;

Selloni, Annabella ;

Livraghi, Stefano ;

Paganini, Maria Cristina ;

Giamello, Elio .

CHEMICAL PHYSICS, 2007, 339 (1-3) :44-56

[8] ELECTROCHEMICAL PHOTOLYSIS OF WATER AT A SEMICONDUCTOR ELECTRODE [J].

FUJISHIMA, A ;

HONDA, K .

NATURE, 1972, 238 (5358) :37-+

[9] TiO2 photocatalysis and related surface phenomena [J].

Fujishima, Akira ;

Zhang, Xintong ;

Tryk, Donald A. .

SURFACE SCIENCE REPORTS, 2008, 63 (12) :515-582

[10] Innovative visible light-activated sulfur doped TiO2 films for water treatment [J].

Han, Changseok ;

Pelaez, Miguel ;

Likodimos, Vlassis ;

Kontos, Athanassios G. ;

Falaras, Polycarpos ;

O'Shea, Kevin ;

Dionysiou, Dionysios D. .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2011, 107 (1-2) :77-87

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