摘要
作为二维(2D)过渡金属硫族化合物(TMDs)的成员之一,MoS_2因其独特的物理化学性质及在自然界中丰富的含量成为目前研究最广泛的一种半导体。凭借超薄的层状结构和可调控的禁带宽度,单层和多层的二维MoS_2纳米材料在众多研究领域都备受关注。基于溶液法的合成工艺(如超声辅助液相剥离和湿化学合成法)有望实现大规模、高产量地制备二维MoS_2纳米材料,更重要的是,基于溶液法合成的二维MoS_2纳米材料便于作为模板或者载体来制备功能性复合纳米材料,有利于进一步提升其在相关应用中的性能。本文重点介绍了基于溶液制备二维MoS_2纳米材料的各种合成方法,同时特别关注了溶液法制备的二维MoS_2复合纳米材料及其在光、电催化方面的应用,并展望了溶液法合成二维MoS_2及其复合材料的应用前景和挑战。
As a member of two-dimensional(2 D) transition metal chalcogenide compounds(TMDs), molybdenum sulfide(MoS_2) has become one of the most widely studied semiconductors because of its inherent unique physical and chemical properties as well as its abundance in nature. Due to special lamellar structure and adjustable band gap, 2 D MoS_2 have received considerable attention in the fields of catalysis, optoelectronic devices, sensing and energy storage and conversion. Solution-based techniques for preparation of 2 D MoS_2 nanosheet,such as liquid phase exfoliation methods and wet chemical synthesis methods,are promising for large-scale and high-yield preparation. More importantly, 2 D MoS_2 nanosheets obtained by solution-based method can also be used as templates or carriers to fabricate functional composites to further enhance their performance in related applications. In this review, the recent progress of solution-processed MoS_2 nanosheets is presented, with the emphasis on their versatile synthetic strategies, hybridization and their application in photocatalysis and electrocatalysis. Finally, the challenges and opportunities in this research area are proposed.
引文
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