微波水熱合成氧化鋅奈米粉體之研究

Microwave Hydrothermal Synthesis Of Zinc Oxide Nano Powders

陳東昇(Chen, Dong-Sheng)

指導教授 ： 王宏文

中原大學/理學院/化學研究所/碩士(2016年)

https://doi.org/10.6840/cycu201600771

摘要

氧化鋅具有極寬的能隙、高透光性與高折射率與不對稱的晶體結構，以及具有優秀的介電及光電等性質的材料。奈米結構的氧化鋅不但成本低且容易合成，近幾年來氧化鋅的各種的奈米型態陸續地出現，有粒狀、線狀、花狀、片狀、柱狀與管狀，其中以奈米線、奈米柱和奈米片的應用最多。
本研究目的在於利用微波水熱，用醋酸鋅與乙二胺的混和，透過濃度、pH、反應溫度的改變生成氧化鋅的粉體，在實驗中所生成的氧化鋅皆為六方(Hexagonal)晶系的纖鋅礦(wurtzite)結構。且發現經過pH的改變且反應後所生成的氧化鋅粉在pH 8多為棒柱型態的，pH 9的時候則會產生短棒柱狀的型態並且有團聚現象，在pH 10時則都是以星狀型態得氧化鋅呈現。

關鍵字

氧化鋅 ； 化學溶液法 ； 微波水熱

並列摘要

Zinc oxide has a very wide band gap, a high transparency of crystal, and a high refractive index. It is a material with excellent dielectric and optical properties. The nanostructures of zinc oxide is not only easy synthesis but also in low cost. In recent years, a variety of zinc oxide nano patterns have been discovered, such as granular, linear, flower, sheets, columnar and tubular, in which the nano lines, nanorods and nanotablets are most widely used.

Purpose of this study is to study the microwave hot water condition for the synthesis of ZnO nanomaterials, where a mixture of zinc acetate with ethylene diamine were employed. The concentration of reactants, pH values, and temperature have been varied for modification. The zinc oxide produced in this study are all hexagonal crystal structure (wurtzite). At pH = 8, the resulted zinc oxides are mostly in stick patterns. At pH=9, the zinc oxides are a columnar rod patterns and agglomerated. At pH=10, the zinc oxides are mostly stellate patterns.

並列關鍵字

zinc oxide ； chemical solution method ； the microwave hot water.

參考文獻

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