二维MXene基复合光催化材料研究进展

Research Progress of Two-Dimensional MXene-Based Composite Photocatalysts

MXene作为一种新型的二维过渡金属碳化物、氮化物或碳氮化物,具有良好的金属导电性、较高的载流子迁移率和表面端基可调控能带结构等特性,适合在光催化材料体系中作为助催化剂来提高光催化性能。本综述概述了零维、一维、二维和三维半导体光催化材料与MXene复合材料的可控构筑及其在污染物脱除、制氢、CO_(2)还原和固氮等光催化领域的最新研究进展,重点介绍了二维MXene基复合光催化材料的构筑方法及其光催化性能增强机制,并对其未来的研究方向进行了展望。

MXene as a novel two-dimensional transition metal carbides, nitrides or carbonitrides has the excellent metal conductivity,high carrier mobility, and surface-terminated groups regulated band structure. It can be thus used as a cocatalyst in photocatalytic material systems to improve the photocatalytic properties. This review represented recent research progress on the controllable construction of MXene-based composites with zero-dimensional, one-dimensional, two-dimensional, and three-dimensional semiconductor photocatalytic materials and its applications in the photocatalytic fields(i.e., pollutant removal, hydrogen production,CO_(2) reduction, and nitrogen fixation). Also, the construction methods and photocatalytic enhancement mechanisms of two-dimensional MXene-based composite photocatalysts were given. In addition, the future research directions of MXene-based composite photocatalysts were also prospected.