Fabrication of Rattle-Type TiO2/SiO2 Core/Shell Particles with Both High Photoactivity and UV-Shielding Property

被引：95
作者：
Ren, Yuan
Chen, Min
Zhang, Yang
Wu, Limin [1 ]
机构：
[1] Fudan Univ, Dept Mat Sci, Shanghai 200433, Peoples R China
来源：
LANGMUIR | 2010年 / 26卷 / 13期
基金：
美国国家科学基金会;
关键词：
SELECTIVE PHOTOCATALYTIC REACTIONS; HOLLOW SILICA SHELL; TITANIUM-DIOXIDE; TIO2; NANOPARTICLE; PHOTODECOMPOSITION; ENCAPSULATION; MULTILAYERS; COLLOIDS; SURFACE; SPHERES;
D O I：
10.1021/la1008413
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Rattle-type TiO2@void@SiO2 particles, with commercial TiO2 particles encapsulated into hollow SiO2 shell, were fabricated by successive coating of multilayer polyelectrolytes and SiO2 shell onto TiO2 particles and then treatment by UV irradiation to remove the polyelectrolyte layers. TEM observation showed that the composite particles had a unique rattle-type structure in which there existed void space between TiO2 core and SiO2 shell. The photocatalytic degradation of Rhodamine B indicated that these composite particles with larger void space tended to have higher photoactivity. The polyurethane films doped with rattle-type TiO2@void@SiO2 composite particles had very good UV-shielding property.
引用
收藏
页码：11391 / 11396
页数：6
相关论文
共 32 条
[1]   Preparation and characterization of ordered nanoparticle and polymer composite multilayers on colloids [J].
Caruso, F ;
Möhwald, H .
LANGMUIR, 1999, 15 (23) :8276-8281
[2]   Investigation of electrostatic interactions in polyelectrolyte multilayer films:: Binding of anionic fluorescent probes to layers assembled onto colloids [J].
Caruso, F ;
Lichtenfeld, H ;
Donath, E ;
Möhwald, H .
MACROMOLECULES, 1999, 32 (07) :2317-2328
[3]   Magnetic nanocomposite particles and hollow spheres constructed by a sequential layering approach [J].
Caruso, F ;
Spasova, M ;
Susha, A ;
Giersig, M ;
Caruso, RA .
CHEMISTRY OF MATERIALS, 2001, 13 (01) :109-116
[4]   Electrostatic self-assembly of silica nanoparticle -: Polyelectrolyte multilayers on polystyrene latex particles [J].
Caruso, F ;
Lichtenfeld, H ;
Giersig, M ;
Möhwald, H .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1998, 120 (33) :8523-8524
[5]   A method for the fabrication of monodisperse hollow silica spheres [J].
Chen, M ;
Wu, LM ;
Zhou, SX ;
You, B .
ADVANCED MATERIALS, 2006, 18 (06) :801-+
[6]   Platinum-Doped TiO2/Magnetic Poly(methyl methacrylate) Microspheres as a Novel Photocatalyst [J].
Chen, Yi-Hung ;
Franzreb, Matthias ;
Lin, Rong-Hsien ;
Chen, Li-Lin ;
Chang, Ching-Yuan ;
Yu, Yue-Hwa ;
Chiang, Pen-Chi .
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 2009, 48 (16) :7616-7623
[7]   Tuning the photocatalytic activity of titanium dioxide by encapsulation inside zeolites exemplified by the cases of thianthrene photooxygenation and horseradish peroxidase photodeactivation [J].
Cosa, G ;
Galletero, MS ;
Fernández, L ;
Márquez, F ;
García, H ;
Scaiano, JC .
NEW JOURNAL OF CHEMISTRY, 2002, 26 (10) :1448-1455
[8]   Synthesis of Eccentric Titania-Silica Core-Shell and Composite Particles [J].
Demirors, Ahmet Faik ;
van Blaaderen, Alfons ;
Imhof, Amout .
CHEMISTRY OF MATERIALS, 2009, 21 (06) :979-984
[9]   Coating of silica on titania pigment particles examined by electroacoustics and dielectric response [J].
Djerdjev, AM ;
Beattie, JK ;
O'Brien, RW .
CHEMISTRY OF MATERIALS, 2005, 17 (15) :3844-3849
[10]   Visible-light-activated nanoparticle photocatalyst of iodine-doped titanium dioxide [J].
Hong, XT ;
Wang, ZP ;
Cai, WM ;
Lu, F ;
Zhang, J ;
Yang, YZ ;
Ma, N ;
Liu, YJ .
CHEMISTRY OF MATERIALS, 2005, 17 (06) :1548-1552
1234