期中報告

Low temperature synthesis of ZnO nanorods by using PVP and their characterization.
M. Eskandari, V. Ahmadi, SH. Ahmadi
ZnO nanorods are prepared in large quantity at low temperature by using zinc acetate dehydrate and polyvinyl pyrrolidone (PVP) as precursor and capping, respectively
(M)
.
Dependency of morphology and diameter of ZnO nanorods on solvent polarity are investigated. It is observed that diameter of nanorods diminishes with reduction of the solvent polarity
(I)
. The optical properties of the ZnO nanorods are investigated by
UV–Vis spectroscopy. There is a blue-shift in the band-edge with changing of the solvent polarity. The influence of water value on the morphology and diameter of the
ZnO nanorods is examined
(R)
. It is shown that diameter of nanorods decreases by lessening water value; also a blue-shift is observed with decreasing diameter. Effect of Zn/PVP ratio on the ZnO nanorods arrangement is studied
(D)
.

Dependency of morphology and diameter of ZnO nanorods on solvent polarity are investigated. It is observed that diameter of nanorods diminishes with reduction of the solvent polarity.
ZnO nanorods are prepared in large quantity at low temperature by using zinc acetate dehydrate and polyvinyl pyrrolidone (PVP) as precursor and capping, respectively.
The optical properties of the ZnO nanorods are investigated by UV–Vis spectroscopy.
There is a blue-shift in the band-edge with changing of the solvent polarity. The influence of water value on the morphology and diameter of the ZnO nanorods is examined.
It is shown that diameter of nanorods decreases by lessening water value; also a blue-shift is observed with decreasing diameter. Effect of Zn/PVP ratio on the ZnO nanorods arrangement is studied

利用
PVP
於低溫環境下製成氧化鋅奈米棒並探討其特性
分別以含水醋酸鋅與
PVP
作為前驅物與包覆劑，可在低溫條件下製成大量的氧
化鋅奈米棒。氧化鋅奈米棒的型態和直徑與溶劑極性有關，據觀察，奈米線直徑
隨溶液極性降低而變小。氧化鋅奈米棒的光學性質可藉紫外光
-
可見光光譜儀探
查，能帶邊緣的藍移現象會隨著溶劑極性不同而改變。探討水量對氧化鋅奈米棒
型態與直徑的影響，顯示奈米棒直徑會隨水量的減少而變小，藍移現象隨直徑變
小而增加，以及鋅
/PVP
比例對氧化鋅奈米棒影響之研究。