Vertically aligned and ordered hematite hierarchical columnar arrays for applications in field-emission, superhydrophilicity, and photocatalysis

被引：61

作者：

Li, Liang ^{[1
]}

Koshizaki, Naoto ^{[1
]}

机构：

[1] Natl Inst Adv Ind Sci & Technol, Nanotechnol Res Inst, Tsukuba, Ibaraki 3058565, Japan

来源：

JOURNAL OF MATERIALS CHEMISTRY | 2010年 / 20卷 / 15期

基金：

日本学术振兴会;

关键词：

CARBON NANOTUBES; VISIBLE-LIGHT; ALPHA-FE2O3; NANOTUBES; GROWTH-MECHANISM; NANOWIRE ARRAYS; UV-IRRADIATION; THIN-FILMS; TIO2; ZNO; CONVERSION;

D O I：

10.1039/b922322c

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：

We achieved the vertically aligned and ordered hematite hierarchical columnar arrays using pulsed laser deposition (PLD) with polystyrene (PS) colloid spheres as templates. Crystallized hematite hexagonalclose-packed columnar arrays are fabricated at room temperature and can be transformed to hexagonal-non-close-packed columnar arrays at an annealing temperature of 450 degrees C. The hierarchical columns consist of assembled nanoplates or nanoparticles, depending on the oxygen pressures during the PLD process. The improved performance in field emission (FE), surface wetting, and photocatalytic properties of the hematite hierarchical columnar arrays is due to the unique morphology of the superstructures and controlled compositions.

引用

页码：2972 / 2978

页数：7

共 68 条

[1] Enhanced field emission of ZnO nanowires [J].

Banerjee, D ;

Jo, SH ;

Ren, ZF .

ADVANCED MATERIALS, 2004, 16 (22) :2028-+

[2] Fabrication of nonaging superhydrophobic surfaces by packing flowerlike hematite particles [J].

Cao, Anmin ;

Cao, Liangliang ;

Gao, Di .

APPLIED PHYSICS LETTERS, 2007, 91 (03)

[3] Reversible wettability changes in colloidal TiO2 nanorod thin-film coatings under selective UV laser irradiation [J].

Caputo, Gianvito ;

Nobile, Concetta ;

Kipp, Tobias ;

Blasi, Laura ;

Grillo, Vincenzo ;

Carlino, Elvio ;

Manna, Liberato ;

Cingolani, Roberto ;

Cozzoli, Pantaleo Davide ;

Athanassiou, Athanassia .

JOURNAL OF PHYSICAL CHEMISTRY C, 2008, 112 (03) :701-714

[4] ZnO nanoneedles with enhanced and sharp ultraviolet cathodoluminescence peak [J].

Chang, Yu C. ;

Chen, Lih J. .

JOURNAL OF PHYSICAL CHEMISTRY C, 2007, 111 (03) :1268-1272

[5] α-Fe2O3 nanotubes in gas sensor and lithium-ion battery applications [J].

Chen, J ;

Xu, LN ;

Li, WY ;

Gou, XL .

ADVANCED MATERIALS, 2005, 17 (05) :582-+

[6]

Cheng JY, 2001, ADV MATER, V13, P1174, DOI 10.1002/1521-4095(200108)13:15<1174::AID-ADMA1174>3.0.CO

[7]

2-Q

[8] Shape-controlled synthesis and cathodoluminescence properties of elongated α-Fe2O3 nanostructures [J].

Chioncel, M. F. ;

Diaz-Guerra, C. ;

Piqueras, J. .

JOURNAL OF APPLIED PHYSICS, 2008, 104 (12)

[9] Systematic study of the growth of aligned arrays of α-Fe2O3 and Fe3O4 nanowires by a vapor-solid process [J].

Chueh, Yu-Lun ;

Lai, Ming-Wei ;

Liang, Jia-Qi ;

Chou, Li-Jen ;

Wang, Zhong Lin .

ADVANCED FUNCTIONAL MATERIALS, 2006, 16 (17) :2243-2251

[10] Synthesis of metal and metal oxide nanowire and nanotube arrays within a mesoporous silica template [J].

Crowley, TA ;

Ziegler, KJ ;

Lyons, DM ;

Erts, D ;

Olin, H ;

Morris, MA ;

Holmes, JD .

CHEMISTRY OF MATERIALS, 2003, 15 (18) :3518-3522

← 1 2 3 4 5 6 7 →