Preparation of Titanium Dioxide Thin Film as a Photocatalyst: A Review

二氧化鈦光觸媒薄膜之製備方法

陳郁文(Yu-Wen Chen)

《石油季刊》 42卷2期 (2006/06) Pp. 31-40

https://doi.org/10.30128/JP.200606.0003

摘要

二氧化鈦在工業上廣泛地用於高分子、油漆、化妝品的添加劑，近年來二氧化鈦也廣泛地用於光觸媒，但是如何製備奈米級二氧化鈦薄膜仍有很大的研究空間。本文報導文獻上有關二氧化鈦薄膜的製造方法，包括溶膠－凝膠、微乳化、逆微胞與水熱法。溶膠－凝膠法是研究最多的方法，但是烷氧化物原料昂貴，而且碰到潮濕空氣時會立即水解。水熱法可製造出奈米級顆粒，但生產成本高，而且不易用連續式生產。將四氧化鈦先轉化成氫氣化鈦膠體，再在水中加熱水解成二氧化鈦，嚴格控制製備條件可得到奈米二氧化鈦懸浮於水中，可做為鍍液，浸鍍在任何載體上。

關鍵字

二氧化鈦 ； 光觸媒 ； 薄膜 ； 奈米材料

並列摘要

Titanium oxide is widely used in industry as an additive for polymer, paints, cosmetics. Recently the anatase structure of titanium oxide has been extensively used as a photocatalyst. However, the preparation of nanosized and thin film titanium oxide still have plenty room for study. This report reviews the preparation method in the literature. There are many methods to prepare titanium oxide, such as sol-gel, microemulsion, reverse micelle, and hydrothermal method. Sol-gel method has been extensively studied. However, the alkoxide material is expensive and it is easy to hydrolysis upon exposure to moisture air. Hydrothermal method also can produce nanosized particle, however, the cost is high and it is difficult to have continuous process. One of the method is to convert titanium trichloride to titanium hydroxide gel. It is then converted to titanium oxide upon heating in water by dehydration. The product is nanosized titanium oxide sol in water. It can be used to prepare thin film on any substrate.

並列關鍵字

Titanium Oxide ； Anatase ； Photocatalysis ； Nanomaterial