光子晶体在光催化领域的研究进展

Research progress of photonic crystals in photocatalysis

光子晶体是由具有不同介电常数的物质,在空间按照周期性排列形成具有光子带隙的介电结构材料。光子带隙中的慢光子和带隙反射可以促进光子的捕获和控制光与物质之间的相互作用。基于光子晶体独特的光学特性和较大的比表面积,将光子晶体结构引入到半导体光催化材料的设计中,可以有效地增强光催化反应活性。本文介绍了三维光子晶体的制备方法及慢光子效应,总结了光子晶体特别是反蛋白石结构的光子晶体作为光催化剂在废水净化、制氢、二氧化碳的转化等领域的研究进展,并针对光子晶体光催化剂面临的挑战,提出了开发具有不同折射率和周期性的多层三维光子晶体,促进光子晶体在光催化领域的应用。

Photonic crystals are dielectric structure materials with photonic band gaps which are composed of matters with different dielectric constants and arranged in space periodically.The slow photon and band gap reflection in the photonic band gap can promote the photonic capture and control the interaction between light and matter.Based on the unique optical properties and large specific surface area of photonic crystals,the photonic crystal structure is introduced into the design of semiconductor photocatalytic materials,which can effectively enhance the photocatalytic reaction activity.The preparation methods of three-dimensional photonic crystals and slow photons effect was introduced in this paper,the research progress was especially summarized in the inverse opal photonic crystal as catalysts in wastewater purification of light,hydrogen production,carbon dioxide conversion and etc,and for the challenge faced by the photonic crystal light catalyst,multilayer three-dimensional photonic crystals with different refractive index and the periodicity were put forward,in order to promote photonic crystals applications in the field of photocatalysis.