Electrospun anatase TiO2 nanofibers with ordered mesoporosity

被引：35

作者：

Chattopadhyay, Shreyasi ^{[1
]}

Saha, Jony ^{[1
]}

De, Goutam ^{[1
]}

机构：

[1] CSIR, Nanostruct Mat Div, Cent Glass & Ceram Res Inst, Kolkata 700032, India

来源：

JOURNAL OF MATERIALS CHEMISTRY A | 2014年 / 2卷 / 44期

关键词：

TITANIA THIN-FILMS; PHOTOCATALYTIC ACTIVITY; FRAMEWORK; FIBERS; STATE;

D O I：

10.1039/c4ta04481a

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：

Anatase TiO2 nanofibers (200-300 nm in diameter) with 3-dimensionally (3D) ordered pore structure and high surface area were synthesized by electrospinning technique. The unique combination of partially acetylacetone chelated Ti-alkoxide, viscosity-controlling cum high positive charge balancing agent PVP and structure director F127 yielded nanofibers with ordered mesoporosity similar to the Pm (3) over barm structure. Dynamic heating of the fibers in the temperature range 350-540 degrees C and simultaneous XRD studies revealed that the amorphous to anatase transformation initiated at about 400 degrees C with the retention of 3D mesoporosity up to the final heat-treatment stage. TEM studies also confirmed this. During amorphous to anatase conversion, the surface area decreased from 165 (350 degrees C) to 90 m(2) g(-1) (540 degrees C). The crystalline mesoporous nanofibers showed enhanced photocatalytic activity with reusability.

引用

页码：19029 / 19035

页数：7

共 34 条

[1] Templated Nanocrystal-Based Porous TiO2 Films for Next-Generation Electrochemical Capacitors [J].

Brezesinski, Torsten ;

Wang, John ;

Polleux, Julien ;

Dunn, Bruce ;

Tolbert, Sarah H. .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2009, 131 (05) :1802-1809

[2] Controlled formation of highly organized mesoporous titania thin films:: From mesostructured hybrids to mesoporous nanoanatase TiO2 [J].

Crepaldi, EL ;

Soler-Illia, GJDA ;

Grosso, D ;

Cagnol, F ;

Ribot, F ;

Sanchez, C .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2003, 125 (32) :9770-9786

[3] Highly dispersed Au nanoparticles incorporated mesoporous TiO2 thin films with ultrahigh Au content [J].

Cui, Fangming ;

Hua, Zile ;

Wei, Chenyang ;

Li, Jiaqi ;

Gao, Zhe ;

Shi, Jianlin .

JOURNAL OF MATERIALS CHEMISTRY, 2009, 19 (41) :7632-7637

[4] Self-assembled TiO2 nanoparticles: mesoporosity, optical and catalytic properties [J].

Das, Swapan K. ;

Bhunia, Manas K. ;

Bhaumik, Asim .

DALTON TRANSACTIONS, 2010, 39 (18) :4382-4390

[5] Enhanced photocatalytic CO2-reduction activity of electrospun mesoporous TiO2 nanofibers by solvothermal treatment [J].

Fu, Junwei ;

Cao, Shaowen ;

Yu, Jiaguo ;

Low, Jingxiang ;

Lei, Yongpeng .

DALTON TRANSACTIONS, 2014, 43 (24) :9158-9165

[6]

Gao DW, 2012, J ENG FIBER FABR, V7, P94

[7]

Grosso D, 2001, ADV MATER, V13, P1085, DOI 10.1002/1521-4095(200107)13:14<1085::AID-ADMA1085>3.0.CO

[8]

2-Q

[9] Mesoporous titania photocatalysts: preparation, characterization and reaction mechanisms [J].

Ismail, Adel A. ;

Bahnemann, Detlef W. .

JOURNAL OF MATERIALS CHEMISTRY, 2011, 21 (32) :11686-11707

[10] Mesoporous titania thin films with pseudo-cubic structure: Synthetic studies and applications to nanomembranes and nanotemplates [J].

Lee, UH ;

Lee, H ;

Wen, S ;

Mho, SI ;

Kwon, YU .

MICROPOROUS AND MESOPOROUS MATERIALS, 2006, 88 (1-3) :48-55

← 1 2 3 4 →