A facile room-temperature chemical reduction method to TiO2@CdS core/sheath heterostructure nanowires

被引:101
作者
Cao, J [1 ]
Sun, JZ [1 ]
Li, HY [1 ]
Hong, J [1 ]
Wang, M [1 ]
机构
[1] Zhejiang Univ, Dept Polymer Sci & Engn, State Key Lab Silicon Mat, Hangzhou 310027, Peoples R China
关键词
D O I
10.1039/b313541a
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 have prepared functional TiO2@CdS core/sheath heterostructure nanowires using a simple chemical reduction method at room temperature. The core/sheath nanowires were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD) and UV-visible spectroscopic techniques. It was found that the thickness of the CdS sheath could be controlled by the concentration of the precursors. The continuous and polycrystalline CdS outer layer could be formed on the TiO2 nanowires when the concentration of the S precursor was higher than 0.2 mmol. A possible multi-site growth mechanism of the formation of the composite nanowires was proposed.
引用
收藏
页码:1203 / 1206
页数:4
相关论文
共 26 条
[1]   Solution properties of single-walled carbon nanotubes [J].
Chen, J ;
Hamon, MA ;
Hu, H ;
Chen, YS ;
Rao, AM ;
Eklund, PC ;
Haddon, RC .
SCIENCE, 1998, 282 (5386) :95-98
[2]   Noncovalent sidewall functionalization of single-walled carbon nanotubes for protein immobilization [J].
Chen, RJ ;
Zhang, YG ;
Wang, DW ;
Dai, HJ .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2001, 123 (16) :3838-3839
[3]   SYNTHESIS AND CHARACTERIZATION OF CARBIDE NANORODS [J].
DAI, HJ ;
WONG, EW ;
LU, YZ ;
FAN, SS ;
LIEBER, CM .
NATURE, 1995, 375 (6534) :769-772
[4]   Interface and defect structures of Zn-ZnO core-shell heteronanobelts [J].
Ding, Y ;
Kong, XY ;
Wang, ZL .
JOURNAL OF APPLIED PHYSICS, 2004, 95 (01) :306-310
[5]   FEMTOSECOND STUDIES OF INTERPARTICLE ELECTRON-TRANSFER IN A COUPLED CDS-TIO2 COLLOIDAL SYSTEM [J].
EVANS, JE ;
SPRINGER, KW ;
ZHANG, JZ .
JOURNAL OF CHEMICAL PHYSICS, 1994, 101 (07) :6222-6225
[6]  
Fullam S, 2000, ADV MATER, V12, P1430, DOI 10.1002/1521-4095(200010)12:19<1430::AID-ADMA1430>3.0.CO
[7]  
2-8
[8]   Single-crystal gallium nitride nanotubes [J].
Goldberger, J ;
He, RR ;
Zhang, YF ;
Lee, SW ;
Yan, HQ ;
Choi, HJ ;
Yang, PD .
NATURE, 2003, 422 (6932) :599-602
[9]  
He RR, 2002, NANO LETT, V2, P1109, DOI [10.1021/nl0257216, 10.1021/n10257216]
[10]   Photoelectrochemical studies of CdS nanoparticle-modified electrodes [J].
Hickey, SG ;
Riley, DJ .
JOURNAL OF PHYSICAL CHEMISTRY B, 1999, 103 (22) :4599-4602