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首页> 外文期刊>Physica status solidi, B. Basic research >Electric transport properties and H-1 NMR study of the fullerene-like WS2 nanoparticles
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Electric transport properties and H-1 NMR study of the fullerene-like WS2 nanoparticles

机译：富勒烯状WS2纳米粒子的电输运性质和H-1 NMR研究

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Electrical resistivity and Hall measurements, of pellets compacted from IF-WS2 nanoparticles and 2H-WS, powder were done. Electrical transport measurements were carried out on pellets by the van der Pauw method in a wide temperature range. Arrhenius plots for conductivities of the WS2 samples (2H, IF and IF+treatment) exhibit marked variations in (partial derivative In sigma T-1)/partial derivative T-1 with temperature. Resistivity of IF-WS2 pellets is higher than that of 2H-WS2 pellets. It was found that the.electrical properties of IF-WS2 powder vary with aposteriory heat treatment under vacuum. The H-1 NMR measurements show that the prepared product contains water (and possibly some hydrogen) molecules that occupy the voids in the central part of the fullerene-like nanoparticles and the nanopores between the adhering IF-WS2 particles. Defects in the IF-WS, structure, arising due to the strain release during the folding of the layers, may result in additional sites for the absorbed water. (c) 2006 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
机译：对从IF-WS2纳米颗粒和2H-WS粉末压制的颗粒进行了电阻率和霍尔测量。通过范德堡方法在较宽的温度范围内对颗粒进行电迁移测量。 WS2样品（2H，IF和IF +处理）的电导率的Arrhenius图显示了（偏导数sigma T-1）/偏导数T-1随温度的显着变化。 IF-WS2颗粒的电阻率高于2H-WS2颗粒的电阻率。发现IF-WS2粉末的电性能随真空中的后部热处理而变化。 H-1 NMR测量表明，所制备的产品含有水（可能还有一些氢）分子，这些分子占据了富勒烯状纳米颗粒中心部分的空隙以及粘附的IF-WS2颗粒之间的纳米孔。 IF-WS结构的缺陷是由于在折叠层时释放应力而引起的，可能会导致吸收水的其他位置。 （c）2006年WILEY-VCH Verlag GmbH＆Co. KGaA，魏因海姆。

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