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首页> 外文期刊>Zeitschrift fur Anorganische und Allgemeine Chemie >Synthesis, characterization, and properties of few-layer metal dichalcogenides and their nanocomposites with noble metal particles, polyaniline, and reduced graphene oxide
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Synthesis, characterization, and properties of few-layer metal dichalcogenides and their nanocomposites with noble metal particles, polyaniline, and reduced graphene oxide

机译：贵金属颗粒，聚苯胺和还原氧化石墨烯的几层金属二硫化碳及其纳米复合材料的合成，表征和性能

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摘要

Few-layer graphene-like sheets of MoS_2, WS_2, MoSe_2 and WSe_2 were prepared by employing two methods. The first method uses microwave synthesis in ethylene glycol or water medium and the second method involves laser irradiation of the bulk samples dispersed in dimethylformamide. The few-layer dichalcogenide samples were characterized by various microscopic and spectroscopic techniques. These graphene mimics show room-temperature ferromagnetism and exchange bias besides magnetoresistance at room temperature. We have deposited nanoparticles of gold, silver, and platinum on few-layer WS_2 and characterized the nanocomposites. Nanocomposites of MoS_2 with reduced graphene oxide show increase in resistivity with increasing amount of MoS_2. The polyaniline MoS_2 composite prepared by in situ polymerization of aniline in the presence of few-layer MoS_2 shows evidence of polaronic character.
机译：采用两种方法制备了几层类似MoS_2，WS_2，MoSe_2和WSe_2的石墨烯状薄片。第一种方法是在乙二醇或水介质中进行微波合成，第二种方法是对分散在二甲基甲酰胺中的大量样品进行激光照射。通过各种显微镜和光谱技术表征了几层杀二氢氰化物样品。这些石墨烯模拟物显示了室温的铁磁性和室温下的磁阻以及交换偏压。我们已经在几层WS_2上沉积了金，银和铂的纳米颗粒，并对其进行了表征。氧化石墨烯含量降低的MoS_2纳米复合材料的电阻率随MoS_2含量的增加而增加。在几层MoS_2的存在下通过苯胺的原位聚合制备的聚苯胺MoS_2复合材料表现出极化特性。

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