Preparation of Two-Dimensional Molybdenum Disulfide Nanosheets by High-Gravity Technology
Preparation of Two-Dimensional Molybdenum Disulfide Nanosheets by High-Gravity Technology
复制标题
高重力技术制备二维二硫化钼纳米片
DOI：
10.1021/acs.iecr.7b00030
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发表时间：
2017-04
影响因子：
4.2
通讯作者：
Meng Hong
中科院分区：
文献类型：
--
作者：
Yin Xianglu;Li Yuewei;Wu Wei;Chu Guangwen;Luo Yong;Meng Hong
本文介绍了一种利用超重力技术从块体材料制备二维二硫化钼纳米片的方法。这种由旋转填充床产生的高重力场提供剪切力和碰撞力以将层状块状二硫化钼剥离成纳米片。系统地研究了转速、表面活性剂浓度、剥离时间、填充体积分数和剥离时间对剥离浓度的影响。结果表明，所制备的悬浮液的浓度易于控制。在最佳条件下，浓度为0.37 mg/mL。此外，二维二硫化钼纳米片的分散可以保持较长时间的稳定性。所制备的二硫化钼纳米片的横向尺寸范围为50至800 nm，平均横向尺寸为380 nm。几乎84%的纳米片小于五层。我们还证明了超重力技术也可以应用于二硫化钨。这个...
In this paper, a high-gravity technology was described to prepare two-dimensional molybdenum disulfide nanosheets from bulk materials. This high-gravity field, producing by a rotating packed bed, provides shear force and collision force to exfoliate layered bulk molybdenum disulfide into nanosheets. The effects of rotational speed, surfactant concentration, exfoliation time, packing volume fraction, and exfoliation time on the concentration were systematically studied. The results showed that the concentration of the as-prepared suspension could be easily controlled. The concentration is 0.37 mg/mL under optimum conditions. Moreover, the dispersion of two-dimensional molybdenum disulfide nanosheets could be stabile for a long time. The lateral size of as-produced molybdenum disulfide nanosheets ranged from 50 to 800 nm, and the mean lateral size was 380 nm. Almost 84% of nanosheets were less than five layers. We also demonstrated that high-gravity technology also can be applied to tungsten disulfide. This...
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