Scalable Fabrication of Molybdenum Disulfide Nanostructures and their Assembly
Scalable Fabrication of Molybdenum Disulfide Nanostructures and their Assembly
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DOI：
10.1002/adma.202003439
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发表时间：
2020-09-21
影响因子：
29.4
通讯作者：
Fan, Donglei (Emma)
中科院分区：
文献类型：
--
作者：
Huang, Yun;Yu, Kang;Fan, Donglei (Emma)
二硫化钼（MoS 2）是一种多功能材料，可用于各种应用。在单晶形式下，MoS（2）显示出上级电子性质。它也是一种非常有用的纳米材料，其多晶形式在催化，能量储存，水处理和气体传感方面具有应用。这里，纵向MoS（2）纳米结构的可扩展制造，即，纳米带和它们的氧化物混合物以合理和良好再现的方式具有可调的尺寸。在不同反应阶段得到的纳米带，即MoO 3，MoS 2/MoO（2）杂化物和MoS 2，被充分表征。本文提出的生长方法具有高产率并且特别稳健。这种MoS（2）纳米带可以很容易地从基底上剥离下来并分散在溶液中。结果表明，功能化的MoS（2）纳米带可以在溶液中操作，并组装在控制的模式，并直接在微电极上的紫外点击化学。由于高化学纯度和多晶性质，MoS（2）纳米结构对450至750 nm的波长表现出快速的光电响应，并成功去除水中的汞污染物。这种可规模化的制备和操作以及随后的光定向组装的MoS（2）纳米带及其独特的性质将对过渡金属二硫属化物的器件制备和应用产生启发。
Molybdenum disulfide (MoS2) is a multifunctional material that can be used for various applications. In the single-crystalline form, MoS(2)shows superior electronic properties. It is also an exceptionally useful nanomaterial in its polycrystalline form with applications in catalysis, energy storage, water treatment, and gas sensing. Here, the scalable fabrication of longitudinal MoS(2)nanostructures, i.e., nanoribbons, and their oxide hybrids with tunable dimensions in a rational and well-reproducible fashion, is reported. The nanoribbons, obtained at different reaction stages, that is, MoO3, MoS2/MoO(2)hybrid, and MoS2, are fully characterized. The growth method presented herein has a high yield and is particularly robust. The MoS(2)nanoribbons can readily be removed from its substrate and dispersed in solution. It is shown that functionalized MoS(2)nanoribbons can be manipulated in solution and assembled in controlled patterns and directly on microelectrodes with UV-click-chemistry. Owing to the high chemical purity and polycrystalline nature, the MoS(2)nanostructures demonstrate rapid optoelectronic response to wavelengths from 450 to 750 nm, and successfully remove mercury contaminants from water. The scalable fabrication and manipulation followed by light-directed assembly of MoS(2)nanoribbons, and their unique properties, will be inspiring for device fabrication and applications of the transition metal dichalcogenides.