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Carbothermal reduction/sulfidation synthesis and structural characterization of PbS nanobelts and nanowires

机译：PbS纳米带和纳米线的碳热还原/硫化合成及结构表征

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摘要

PbS nanobelts and nanowires were successfully synthesized through a carbothermal reduction/sulfidation method, in which a powder mixture of sulfur, PbCl_2 and active carbon was heated to 600 deg C under ambient pressure. Structural characterizations show that the one-dimensional nanostmctures grow with a [110] orientation. The nanobelts do not have any crystal defects but the nanowires have deformations, dislocations and grain boundaries, including CIGMA 17 [001] tilt grain boundaries, SIGMA 17 [001] symmetric grain boundaries and SIGMA 5 [001] tilt grain boundaries. According to coincidence site lattice theory, the models for the fitted atoms in SIGMA 17 [001] tilt grain boundaries and SIGMA 17 [001] symmetric grain boundaries are established. The growth mechanism has also been discussed. This first report on PbS microstructures, especially on defects, might be beneficial in studying their synthesis, characterization and applications in the near future.
机译：通过碳热还原/硫化方法成功地合成了PbS纳米带和纳米线，其中将硫，PbCl_2和活性炭的粉末混合物在环境压力下加热到600℃。结构表征表明，一维纳米结构以[110]取向生长。纳米带没有任何晶体缺陷，但是纳米线具有变形，位错和晶粒边界，包括CIGMA 17 [001]倾斜晶粒边界，SIGMA 17 [001]对称晶粒边界和SIGMA 5 [001]倾斜晶粒边界。根据重合点晶格理论，建立了SIGMA 17 [001]倾斜晶界和SIGMA 17 [001]对称晶界中拟合原子的模型。还讨论了增长机制。这份有关PbS微观结构，尤其是缺陷的第一份报告，可能会在不久的将来研究其合成，表征和应用。

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