Nano-Micro Letters

2D MXenes as Co-catalysts in Photocatalysis: Synthetic Methods

Yuliang Sun1, 2, Xing Meng1, 2, 3, *, Yohan Dall’Agnese4, Chunxiang Dall’Agnese1, Shengnan Duan1, 2, Yu Gao1, 2, Gang Chen1, 2, Xiao-Feng Wang1, 2, *

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Nano-Micro Lett. (2019) 11: 79

First Online: 21 September 2019 (Review)


*Corresponding author. E-mail: (Xiao-Feng Wang); (Xing Meng)





Since their seminal discovery in 2011, two-dimensional (2D) transition metal carbides/nitrides known as MXenes, that constitute a large family of 2D materials, have been targeted towards various applications due to their outstanding electronic properties [1-3]. MXenes functioning as co-catalyst in combination with certain photocatalysts have been applied in photocatalytic systems to enhance photogenerated charge separation, suppress rapid charge recombination, and convert solar energy into chemical energy or use it in the degradation of organic compounds. The photocatalytic performance greatly depends on the composition and morphology of the photocatalyst, which in turn, are determined by the method of preparation used. Here we review the four different synthesis methods (mechanical mixing, self-assembly, in situ decoration and oxidation) reported for MXenes in view of their application as co-catalyst in photocatalysis. In addition, the working mechanism for MXenes application in photocatalysis is discussed and an outlook for future research is also provided.



MXenes; Photocatalysis; Cocatalyst; Synthetic methods

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