以微波輔助法製備四氧化三鈷微粒之研究

A Study on the Preparation of Co3O4 Particle by Microwave-assisted Method

吳蘊航(Yun-Hang Wu)

指導教授 ： 蔡德華

國立臺北科技大學/工程學院/化學工程研究所/碩士(2009年)

摘要

本實驗研究的目的為利用微波輔助法製備出高純度之四氧化三鈷粒子；實驗步驟分為兩部份，首先取10 ml，0.6 M 的醋酸亞鈷水溶液加入 0.36 g 的尿素，以 400 W進行微波加熱6分鐘得到柱狀結構之前驅物；前驅物再以高溫煅燒4小時後即可得到黑色的四氧化三鈷粉末。本研究探討改變反應試劑醋酸鈷與尿素之比例、微波功率、微波時間、以及煅燒溫度等條件之效應。實驗的結果利用 XRD、SEM、DLS、AA、TGA分析其性質。依實驗結果得知前驅物經過 800 ℃ 煅燒後可得到高純度之四氧化三鈷球形粒子，粒徑大小約 300 nm。

關鍵字

微波 ； 四氧化三鈷

並列摘要

In this research, we present a method of synthesizing high purity Co3O4 crystal by microwave-assisted method. The process consisted of two steps. First, prepared a mixed solution of 10 ml of 0.6 M Co(CH3COO)2•4H2O and 0.36 g urea. The mixture was treated with 400 W microwave irradiation for 6min to obtain the rod-like precursor. Then, the precursor was calcined at 800 ℃ for 4 hours to get the pure cobaltic oxide(Co3O4) powder. The product was characterized using X-ray diffraction(XRD)、scanning electron microscopy(SEM)、dynamic light scattering(DLS)、atomic absorption spectrometer(AA). The results confirmed that a high purity spherical Co3O4 crystal had been prepared by the calcination at 800 ℃, and the diameter of spherical Co3O4 crystal is about 300 nm.

並列關鍵字

Microwave ； Co3O4

參考文獻

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