Fabrication of blue luminescent MoS2 quantum dots by wet grinding assisted co-solvent sonication
Fabrication of blue luminescent MoS2 quantum dots by wet grinding assisted co-solvent sonication
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DOI：
10.1016/j.jlumin.2015.09.028
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发表时间：
2016-01-01
影响因子：
3.6
通讯作者：
Lee, Kangtaek
中科院分区：
文献类型：
--
作者：
Ali, Junaid;Siddiqui, Ghayas Uddin;Lee, Kangtaek
二硫化钼（MoS 2）属于过渡金属二硫属化合物（TMDs）家族，在二维材料中占有重要地位。在这里，一个有效的策略合成的零维二硫化钼量子点（量子点）已表示。该策略包括在N-甲基-2-吡咯烷酮（NMP）中湿磨原始MoS 2，然后在NMP和1，2-二氯苯（o-DCB）中超声处理。通过不同的表征技术如高分辨率透射电子显微镜、能量色散X射线光谱、拉曼光谱、光致发光光谱、傅里叶变换红外光谱和紫外-可见光谱分析合成的MoS 2量子点，已经报道了这种方法合成MoS 2量子点的功效。发现合成的MoS 2 QD的浓度（产率）为7 mg/mL（-1）。大多数MoS 2量子点的尺寸测量为约2-5 nm。所合成的MoS 2量子点在UV激发下显示出明显的蓝色发光。(C)2015爱思唯尔B. V.保留所有权利。
Molybdenum disulfide (MoS2) belongs to transition-metal dichalcogenides (TMDs) family and has vital position among 2D materials. Here, an efficient strategy for the synthesis of zero-dimensional MoS2 quantum dots (QDs) has been represented. This strategy consists of wet grinding of pristine MoS2 in N-methyl-2-pyrrolidone (NMP) followed by sonication in NMP and 1,2-dichlorobenzene (o-DCB). The efficacy of this approach to synthesize MoS2 QDs has been reported by analyzing the as synthesized MoS2 QDs by different characterization techniques such as high resolution transmission electron microscopy, energy dispersive x-ray spectroscopy, Raman spectroscopy, photoluminescence spectroscopy, Fourier transform infrared spectroscopy and UV-vis spectroscopy. The concentration (yield) of as synthesized MoS2 QDs was found to be 7 mg mL(-1). Most of the MoS2 QDs were measured around 2-5 nm in size. The as synthesized MoS2 QDs showed distinct blue luminescence upon UV excitation. (C) 2015 Elsevier B.V. All rights reserved.