首页> 外文OA文献 >Growth and characterisation of titanium sulphide nanostructures by surface-assisted vapour transport methods; from trisulphide ribbons to disulphide nanosheets
【2h】

Growth and characterisation of titanium sulphide nanostructures by surface-assisted vapour transport methods; from trisulphide ribbons to disulphide nanosheets

机译:通过表面辅助蒸汽传输方法生长和表征硫化钛纳米结构;从三硫化物带到二硫化物纳米片

代理获取
本网站仅为用户提供外文OA文献查询和代理获取服务,本网站没有原文。下单后我们将采用程序或人工为您竭诚获取高质量的原文,但由于OA文献来源多样且变更频繁,仍可能出现获取不到、文献不完整或与标题不符等情况,如果获取不到我们将提供退款服务。请知悉。

摘要

Surface Assisted Chemical Vapour Transport (SACVT) methods have been employed to grow nanostructures of titanium disulphide (TiS2) and titanium trisulphide (TiS3). SACVT reactions occur between titanium and sulphur powders to form TiSx species transported in the vapour phase to grow nanometric flower-like structures on titanium-coated silica substrates. The evolution of structure and composition has been followed by powder X-ray diffraction, electron microscopy and Raman spectroscopy. At 1 : 2 Ti : S ratios, the size and shape of the hexagonal 1T-TiS2 titanium disulphide structures formed can be varied from flower-like growths with 'petals' formed from nanosheets 10 nm thick to platelets microns across. Increasing the proportion of sulphur (Ti : S 1 : 4) enables TiS3 flower-like structures composed of radiating nanoribbons to grow at elevated temperatures without decomposition to TiS2. TEM/SAED suggests that individual trisulphide ribbons grow along the [010] direction. Magnetic properties of the disulphide nanomaterials have been determined using SQUID magnetometry and Raman spectra for disulphides suggest that their crystal and electronic structures may be more complex than expected for bulk, stoichiometric, CdI2-structured TiS2.
机译:已采用表面辅助化学气相传输(SACVT)方法来生长二硫化钛(TiS2)和三硫化钛(TiS3)的纳米结构。 SACVT反应在钛粉和硫粉之间发生,以形成TiSx物质,该TiSx物质在气相中传输,从而在钛涂层的二氧化硅基底上生长纳米级的花状结构。粉末X射线衍射,电子显微镜和拉曼光谱跟踪了结构和组成的演变。在1:2的Ti:S比率下,形成的六方1T-TiS2二硫化钛结构的大小和形状可以从“花瓣”状的花朵状生长变化而来,“花瓣”由10 nm厚的纳米片形成至整个血小板微米。增加硫(Ti:S 1:4)的比例可使由放射状纳米带组成的TiS3花状结构在高温下生长而不会分解为TiS2。 TEM / SAED表明,个别的三硫化物碳带沿[010]方向生长。已经使用SQUID磁力测定法确定了二硫化物纳米材料的磁性能,二硫化物的拉曼光谱表明,它们的晶体和电子结构可能比对大体积,化学计量,CdI2结构的TiS2的预期更为复杂。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
代理获取

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号