钛酸钡基纳米材料的压电催化性能研究进展

社会快速发展带来巨大经济效益的同时,也带来了一系列生态环境问题,如水污染、大气污染和污染物排放。催化降解被认为是处理各种污染的一种有效策略,相对于传统的光催化,压电催化是近几年提出的一种全新的催化方式。通过压电催化将机械能转化为化学能是解决当前水污染难题的一个有效手段,大量的压电材料被应用于压电催化降解的研究,其中BaTiO₃基纳米粉体作为一种典型的压电材料,因具有成本低、压电活性强等优点,引起了研究者的广泛关注。本文首先对压电催化的理论和起源进行了概述,列举了一些常用的压电催化材料并针对其压电催化应用进行举例。围绕BaTiO₃介绍了其基本结构、纳米BaTiO₃粉体的常用制备方法和在压电催化领域的应用及一些典型的改性方法。最后对BaTiO₃基纳米粉体在压电催化领域的未来发展趋势进行了展望。

Research progress in piezoelectric catalysis of barium titanate nanomaterials

The rapid development of society has brought huge economic benefits, but also brought a series of ecological environment problems, such as water pollution, air pollution and pollutant discharge. Catalytic degradation is considered as an effective strategy to deal with various kinds of pollution. Compared with traditional photocatalysis, piezoelectric catalysis is a new catalytic method proposed in recent years. Through the piezoelectric catalytic convert mechanical energy into chemical energy is an effective means of solving the water pollution problem, large numbers of piezoelectric materials have been applied in the research of catalytic degradation of piezoelectric, including BaTiO₃ nano powder as a kind of typical piezoelectric material, because of low cost, the advantages of strong piezoelectric activity, caused the wide attention of researchers. In this paper, the theory and origin of piezoelectric catalysis are summarized, some commonly used piezoelectric catalysis materials are listed and their applications are illustrated. Around BaTiO₃, the basic structure, common preparation methods of nano-BaTiO₃ powder, application in piezoelectric catalysis and some typical modification methods are introduced. Finally, the future development trend of BaTiO₃-based nano-powders in piezoelectric catalysis field is prospected.