等离子体修饰TiO_2及其响应光谱红移

Titanium Oxide Modified by Plasma and Red-Shift of Its Response Spectrum

TiO2在光催化方面应用前景十分广阔,而阻碍其应用的是它的宽禁带,因此研究开发响应光谱红移的TiO2就成为当前光催化剂研究的重要课题。等离子体处理是修饰TiO2的一种有效方法,目前等离子体修饰TiO2及其响应光谱红移的研究取得了一定进展,等离子体修饰的TiO2表面生成了氧空穴,并形成了原子掺杂,减小了禁带宽度,使其响应光谱红移。本文综述了目前该领域的研究现状,并对今后的研究做了展望。

Titanium oxide is the promising material for its application in photocatalysis. But its wide band gap limits the practical application in the case of solar light. The development of red-shift of its response spectrum is one of the most important subjects of the research. Plasma treatment is an effective method to modify titanium oxide. Recently, the progress has been made in the field of modifying titanium oxide by plasma and red-shift of its response spectrum. Oxygen vacancy and substitutive atom are produced on the surface of plasma-treated titanium oxide. Thus, decrease of band gap results in red-shift of its response spectrum. The modification methods by plasma to enable titanium oxide to display red-shift of response spectrum are present in this review. Furthermore, prospect of this research in the future is also discussed.