Synthesis, characterization, and photocatalytic properties of core/shell mesoporous silica nanospheres supporting nanocrystalline titania

被引：47

作者：

Cendrowski, K. ^{[1
]}

Chen, X. ^{[1
]}

Zielinska, B. ^{[1
]}

Kalenczuk, R. J. ^{[1
]}

Ruemmeli, M. H. ^{[2
,3
]}

Buechner, B. ^{[2
]}

Klingeler, R. ^{[4
]}

Borowiak-Palen, E. ^{[1
]}

机构：

[1] W Pomeranian Univ Technol, Inst Chem & Environm Engn, Ctr Knowledge Based Nanomat & Technol, Szczecin, Poland

[2] Leibniz Inst Solid State & Mat Res Dresden, D-01171 Dresden, Germany

[3] Tech Univ Dresden, D-01062 Dresden, Germany

[4] Heidelberg Univ, Kichhoff Inst Phys, Heidelberg, Germany

来源：

JOURNAL OF NANOPARTICLE RESEARCH | 2011年 / 13卷 / 11期

关键词：

Silica nanospheres; Mesoporous silica nanospheres; Titanium dioxide; Core/shell structure; Photocatalytic activity; TIO2 NANOTUBE ARRAYS; SPHERES; SHELL; CORE; DEGRADATION; ANATASE; WATER;

D O I：

10.1007/s11051-011-0307-1

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The facile bulk synthesis of silica nanospheres makes them an attractive support for the transport of chemical compounds such as nanocrystalline titanium dioxide. In this contribution we present a promising route for the synthesis of mesoporous silica nanospheres (m-SiO2) with diameter in range 200 nm, which are ideal supports for nanocrystalline titanium dioxide (TiO2). The detailed microscopic and spectroscopic characterizations of core/shell structure (m-SiO2/TiO2) were conducted. Moreover, the photocatalytic potential of the nanostructures was investigated via phenol decomposition and hydrogen generation. A clear enhancement of photoactivity in both reactions as compared to commercial TiO2-Degussa P25 catalyst is detected.

引用

页码：5899 / 5908

页数：10

共 29 条

[1] Silica nanotubes with mesoporous walls and various internal morphologies using hard/soft dual templates [J].

Bian, Shao-Wei ;

Ma, Zhuo ;

Zhang, Le-Sheng ;

Niu, Fang ;

Song, Wei-Guo .

CHEMICAL COMMUNICATIONS, 2009, (10) :1261-1263

[2] Porous silica nanocapsules and nanospheres: Dynamic self-assembly synthesis and application in controlled release [J].

Chen, Hongmin ;

He, Junhui ;

Tang, Huamin ;

Yan, Chunxiao .

CHEMISTRY OF MATERIALS, 2008, 20 (18) :5894-5900

[3] Preparation of monosize silica spheres and their crystalline stack [J].

Chen, SL .

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 1998, 142 (01) :59-63

[4] A study on the structural properties of mesoporous silica spheres [J].

Das, D. P. ;

Parida, K. M. ;

Mishra, B. K. .

MATERIALS LETTERS, 2007, 61 (18) :3942-3945

[5] Gas-phase photo-oxidation of organic compounds over nanosized TiO2 photocatalysts by various preparations [J].

Deng, XY ;

Yue, YH ;

Gao, Z .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2002, 39 (02) :135-147

[6] Superparamagnetic high-magnetization microspheres with an Fe3O4@SiO2 core and perpendicularly aligned mesoporous SiO2 shell for removal of microcystins [J].

Deng, Yonghui ;

Qi, Dawei ;

Deng, Chunhui ;

Zhang, Xiangmin ;

Zhao, Dongyuan .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2008, 130 (01) :28-+

[7] Selective synthesis of borated meso-macroporous and mesoporous spherical TiO2 with high photocatalytic activity [J].

Fei, Hailong ;

Liu, Yuping ;

Li, Yingpin ;

Sun, Pingchuan ;

Yuan, Zhongyong ;

Li, Baohui ;

Ding, Datong ;

Chen, Tiehong .

MICROPOROUS AND MESOPOROUS MATERIALS, 2007, 102 (1-3) :318-324

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

FUJISHIMA, A ;

HONDA, K .

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

[9] Self-assembly of magnetite beads along multiwalled carbon nanotubes via a simple hydrothermal process [J].

Jia, Baoping ;

Gao, Lian ;

Sun, Jing .

CARBON, 2007, 45 (07) :1476-1481

[10] Photocatalytic degradation of methanol on titania and titania-silica aerogels prepared by non-alkoxide sol-gel route [J].

Kim, Won-Il ;

Suh, Dong Jin ;

Park, Tae-Jin ;

Hong, In-Kwon .

TOPICS IN CATALYSIS, 2007, 44 (04) :499-505

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