不同结构TiO2纳米材料在光解水制氢方面的应用

Application of TiO Nanomaterials With Different Structures in Hydrogen Production Through Water Photolysis

TiO2纳米光催化剂具有低成本、高活性、高稳定性以及无毒、无污染等优点,在光催化领域被广泛应用。但是TiO2本身具有禁带宽度大导致其只能吸收紫外光而对太阳能的利用率较低的缺点,另外其光生电子-空穴对复合速率较快,在一定程度上限制了其应用。因此如何拓展TiO2对可见光的吸收范围以及提高其光催化活性成为研究的主要方向。本文将TiO2基光催化剂按不同结极分类,综述了TiO2基纳米材料光催化剂的常用改性方法以及在光解水制氢方面的研究迚展,为之后TiO2基光催化剂的研究及其在光解水制氢中的应用提供一定的参考。

TiO2 nanomaterial photocatalyst has been widely used in photohydrolysis and hydrogen production due to its advantages of low cost,high activity,high stability,non-toxicity and pollution-free.However,TiO2 itself has defects,such as large bandgap,only absorbing ultraviolet light,low utilization of solar energy.Therefore,how to expand the absorption range of visible light and improve the photocatalytic activity of TiO2 has become the main research direction.In this paper,TiO2-based photocatalysts were classified according to different structures,and the common modification methods of TiO2-based photocatalysts were reviewed as well as their research progress in the photolysis of water.The paper can provide a certain reference for the subsequent research of TiO2-based photocatalyst and photolysis of water.