MXene材料由于拥有较大的比表面积和丰富的表面基团以及对可见光良好的吸收性,使其在光催化方面拥有着广泛的用途,但存在合成时表面官能团难以精确调控等问题。概述了MXene的一些主要合成方法,将合成方法分成了含氟和不含氟两大方向,含氟方法介绍了HF酸刻蚀法、盐酸(HCl)和氟盐刻蚀、氢氟化铵(NH4HF2)刻蚀和熔融氟盐高温刻蚀法。不含氟的方法介绍了路易斯酸法、盐酸-水热刻蚀、碱溶液刻蚀、电化学刻蚀法。同时,归纳了MXene材料的插层方法及其在光催化方面的一些应用,并指出MXene基复合材料是提高材料光催化性能的一种有效方式,同时由分析表明MXene材料可以作为其他光催化材料的助催化剂,用来提高其他光催化材料的光催化性能。
MXene materials have a wide range of applications in photocatalysis due to their large specific surface area,abundant surface groups and good absorption of visible light.However,there are problems such as difficulty in precise control of surface functional groups during synthesis.This article gave an overview of some of the main synthesis methods of MXene.The synthesis methods were divided into two major directions: fluorine-containing and non-fluorine-containing methods.The fluorine-containing method included HF acid etching method,hydrochloric acid (HCl) and fluorine salt etching,ammonium hydrogen fluoride (NH4HF2) etching and molten fluoride salt high-temperature etching method.The non-fluorine-containing method included Lewis acid method,hydrochloric acid-hydrothermal etching,alkaline solution etching,and electrochemical etching.At the same time,this article summarized the intercalation method of MXene material and its application in photocatalysis,and pointed out that MXene-based composite material was an effective way to improve the photocatalytic performance of the material.The analysis showed that MXene material could be used as co-catalyst for other photocatalytic materials to improve the photocatalytic performance of other photocatalytic materials.
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基金资助
2021年湖北省大学生创新创业训练计划项目(S202110500093);国家自然科学基金(52103339)
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