Carbon nanotube hybrids with MoS2 and WS2 synthesized with control of crystal structure and morphology
Carbon nanotube hybrids with MoS2 and WS2 synthesized with control of crystal structure and morphology
复制标题
通过控制晶体结构和形貌合成的 MoS2 和 WS2 碳纳米管杂化物
DOI：
10.1016/j.carbon.2014.12.090
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发表时间：
2015-04-01
期刊：
影响因子：
10.9
通讯作者：
Niu, Chunming
中科院分区：
文献类型：
--
作者：
Li, Xin;Wang, Zhenyu;Niu, Chunming
碳纳米管与二硫化钼和二硫化钨的杂化材料由于其独特的电子和光子性质而引起了人们的广泛关注。本工作在多壁碳纳米管（MWCNTs）上利用不同密度的均匀超细MoO 3和WO 3纳米颗粒（1-2 nm）制备了不同层位和形态的MoS 2和WS 2。不同的多壁碳纳米管杂化结构不仅提供了研究激子转移的可行性，而且在催化剂和电池方面具有潜在的应用前景。一种简单的方法，超声波处理，已被采用，以产生具有均匀的超致密和超细的MoO 3和WO 3纳米粒子的MWCNT杂化物。从相同的方法用不同的反应时间生产的三氧化钼纳米颗粒和自支撑的三氧化钼纳米线已被发现在不同的晶格中结晶。纳米颗粒的形态导致水从三氧化钼晶格中脱离，这是通过基于密度泛函理论的热力学分析证实的。在MoO 3和WO 3纳米颗粒-MWCNT混合结构的硫化之后，具有层状MoS 2和WS 2的MWCNT混合物是优选的。MoS 2和WS 2的层和形态已被控制的三氧化物纳米颗粒前体的MWCNTs上的密度。(C)2014爱思唯尔有限公司版权所有。
Carbon nanotube hybrids with molybdenum and tungsten disulfides have attracted lots of attentions due to their unique electronic and photonic properties. MoS2 and WS2 with different layers and morphology have been produced from homogeneous ultra-fine MoO3 and WO3 nanoparticles (1-2 nm) with different densities on multi-walled carbon nanotubes (MWCNTs) in this work. The different MWCNT hybrid structures not only provide the investigation feasibility of exciton transfer but also give potential applications of catalysts and batteries. A facile method, ultra-sonication, has been adopted to produce MWCNT hybrids with homogeneous ultra-dense and ultra-fine MoO3 and WO3 nanoparticles. The as-produced molybdenum trioxide nanoparticles and free-standing molybdenum trioxide nanowires from the same method with different reaction time have been found to crystallize in different crystal lattices. The nanoparticle morphology leads to the detachment of H2O from molybdenum trioxide lattices, which was confirmed by thermodynamic analysis based on density functional theory. MWCNT hybrids with layered MoS2 and WS2 are preferred after the sulfuration of MoO3 and WO3 nanoparticle-MWCNT hybrid structures. The layers and morphology of MoS2 and WS2 have been controlled by the densities of trioxide nanoparticle precursors on MWCNTs. (C) 2014 Elsevier Ltd. All rights reserved.