二硫化钼
拉曼光谱
傅里叶变换红外光谱
发光
光谱学
光致发光
材料科学
量子点
透射电子显微镜
分析化学(期刊)
量子产额
溶剂
核化学
纳米技术
化学工程
荧光
化学
光电子学
有机化学
光学
工程类
物理
量子力学
冶金
作者
J. Ali,Ghayas Uddin Siddiqui,Kyung Hyun Choi,Yunseok Jang,Kangtaek Lee
标识
DOI:10.1016/j.jlumin.2015.09.028
摘要
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.
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