Controlled growth and field-emission properties of cobalt oxide nanowalls

被引:268
作者
Yu, T
Zhu, YW
Xu, XJ
Shen, ZX
Chen, P
Lim, CT
Thong, JTL
Sow, CH
机构
[1] Natl Univ Singapore, Fac Sci, Dept Phys, Singapore 117542, Singapore
[2] Natl Univ Singapore Nanosci & Nanotechnol Initiat, Singapore 117542, Singapore
[3] Natl Univ Singapore, Dept Mech Engn, Singapore 117576, Singapore
[4] Natl Univ Singapore, Dept Elect & Comp Engn, Singapore 117576, Singapore
关键词
D O I
10.1002/adma.200500322
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Vertically oriented single-crystalline CO3O4 nanowalls (see Figure) have been successfully fabricated by directly heating Co foil in air using a hot plate. The morphologies of the Co3O4 nanowalls can be controlled by varying the growth temperature and time. The Co3O4 nanowalls show promising field-emission performance that is comparable to many other nanomaterials.
引用
收藏
页码:1595 / +
页数:6
相关论文
共 32 条
[1]   Optical recognition of CO and H-2 by use of gas-sensitive Au-Co3O4 composite films [J].
Ando, M ;
Kobayashi, T ;
Iijima, S ;
Haruta, M .
JOURNAL OF MATERIALS CHEMISTRY, 1997, 7 (09) :1779-1783
[2]   FORMATION OF HYDROUS OXIDE-FILMS ON COBALT UNDER POTENTIAL CYCLING CONDITIONS [J].
BURKE, LD ;
LYONS, ME ;
MURPHY, OJ .
JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1982, 132 (JAN) :247-261
[3]   Unexpected differences in the surface electronic structure of NiO and CoO observed by STM and explained by first-principles theory [J].
Castell, MR ;
Dudarev, SL ;
Briggs, GAD ;
Sutton, AP .
PHYSICAL REVIEW B, 1999, 59 (11) :7342-7345
[4]   Unique characteristics of cold cathode carbon-nanotube-matrix field emitters [J].
Collins, PG ;
Zettl, A .
PHYSICAL REVIEW B, 1997, 55 (15) :9391-9399
[5]   The synthesis of metal oxide nanowires by directly heating metal samples in appropriate oxygen atmospheres [J].
Dang, HY ;
Wang, J ;
Fan, SS .
NANOTECHNOLOGY, 2003, 14 (07) :738-741
[6]   Laser-assisted catalytic growth of single crystal GaN nanowires [J].
Duan, XF ;
Lieber, CM .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2000, 122 (01) :188-189
[7]   Electron emission in intense electric fields [J].
Fowler, RH ;
Nordheim, L .
PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-CONTAINING PAPERS OF A MATHEMATICAL AND PHYSICAL CHARACTER, 1928, 119 (781) :173-181
[8]   A novel method for preparing Co3O4 nanofibers by using electrospun PVA/cobalt acetate composite fibers as precursor [J].
Guan, HY ;
Shao, CL ;
Wen, SB ;
Chen, B ;
Gong, J ;
Yang, XH .
MATERIALS CHEMISTRY AND PHYSICS, 2003, 82 (03) :1002-1006
[9]   THE RAMAN-SPECTRA OF CO3O4 [J].
HADJIEV, VG ;
ILIEV, MN ;
VERGILOV, IV .
JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1988, 21 (07) :L199-L201
[10]   Direct growth of aligned carbon nanotube field emitter arrays onto plastic substrates [J].
Hofmann, S ;
Ducati, C ;
Kleinsorge, B ;
Robertson, J .
APPLIED PHYSICS LETTERS, 2003, 83 (22) :4661-4663