Mild benzene-thermal route to GaP nanorods and nanospheres.
GaP nanorods and nanospheres were synthesized from a mild benzene-thermal route at 240 and 300 degrees C, respectively, using Na, P, and GaCl(3) as the starting materials. The structure of the products was identified as zinc blende phase by X-ray powder diffraction (XRD). Transmission electron microscopy (TEM) images showed that, when the reaction temperature was 240 degrees C, the products were nanorods with widths of 20-40 nm and lengths of 200-500 nm and nanospheres with diameters of 20-40 nm. However, when the reaction temperature was increased to 300 degrees C, the products were only nanospheres, and the diameters increased to 40-60 nm. The reaction proceeded through a metallic gallium intermediate, and a solution-liquid-solid (SLS) mechanism was proposed for the one-dimensional growth. The products were also investigated by UV-vis absorption and X-ray photoelectron spectroscopy.
Gao
Shanmin
S
Structure Research Laboratory, University of Science and Technology of China, Hefei, Anhui 230026, PRC.
Xie
Yi
Y
Lu
Jun
J
Du
Guoan
G
He
Wei
W
Cui
Deliang
D
Huang
Baibiao
B
Jiang
Minhua
M