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Your search keyword '"Zhang, L. D."' showing total 15 results
Start Over Author "Zhang, L. D." Journal journal of physics d: applied physics
15 results on '"Zhang, L. D."'

12. Synthesis of SnO2 nanostructures by carbothermal reduction of SnO2 powder.

Author

Sun, S. H., Meng, G. W., Zhang, M. G., An, X. H., Wu, G. S., and Zhang, L. D.

Subjects
NANOSTRUCTURES, GRAPHITE, NANOWIRES, CARBON
Abstract

The mass preparation of SnO2 nanobelts and nanowires has been achieved by carrying out the reaction of SnO2 powder and graphite at 1150°C. A metallic catalyst and vacuum conditions are not necessary. The temperature of the substrates and the concentration of oxide vapour were the critical experimental parameters for the formation of different morphologies of SnO2 nanostructures. The as-synthesized SnO2 nanobelts formed in region II are single crystalline with a [101] growth axis, with widths ranging from 50 to 500 nm, width-to-thickness ratios of 5–10, and lengths up to a few millimetres. [ABSTRACT FROM AUTHOR]

Published
2004
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13. Electrochemical fabrication of ordered Bi<iopmath latex="$_2{\rm S}_3$"><SUB>2</SUB>S<SUB>3</SUB></iopmath> nanowire arrays

Author

Peng, X S, Meng, G W, Zhang, J, Zhao, L X, Wang, X F, Wang, Y W, and Zhang, L D

Abstract

We have successfully fabricated ordered, well-crystallized Bi2S3 nanowire arrays embedded in the nanochannels of porous anodic aluminium oxide templates by direct current electrodeposition from a dimethylsulfoxide solution containing BiCl3 and elemental sulfur. X-ray diffraction and selected area electron diffraction investigations demonstrate that the Bi2S3 nanowires have an orthorhombic uniform structure. Electromicroscopy results show that the nanowires are quite ordered with diameters of about 40 nm and lengths up to 5 µm. X-ray energy dispersion analysis indicates that the atomic composition of Bi and S is very close to a 2 : 3 stoichiometry. The optical properties of these nanowires were characterized by optical absorption techniques. These studies reveal that the annealed Bi2S3 nanowires have an optical band edge (direct) of about 1.56 eV.

Published
2001

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