Formation of MoO3 and WO3 nanoscrolls from MoS2 and WS2 with atmospheric air plasma,Journal of Materials Chemistry C

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Formation of MoO3 and WO3 nanoscrolls from MoS2 and WS2 with atmospheric air plasma
Journal of Materials Chemistry C ( IF 5.7 ) Pub Date : 2017-08-23 00:00:00 , DOI: 10.1039/c7tc02867a
Ximo S. Chu _{1,

2,

3,

4,

5} , Duo O. Li _{1,

2,

3,

4,

5} , Alexander A. Green _{4,

5,

6,

7,

8} , Qing Hua Wang _{1,

2,

3,

4,

5}

Affiliation

Nanostructured transition metal oxides (TMOs) have intriguing electrochemical and physical properties that make them useful in a variety of electrochemical applications. Here, we report the synthesis of MoO₃ and WO₃ nanoscrolls from atomically thin layers of two-dimensional (2D) MoS₂ and WS₂ with atmospheric air plasma treatment. These structures with rolled layers have an increased surface-to-volume ratio and are promising for electrochemical applications. The morphology of the nanoscrolls is characterized by atomic force microscopy (AFM), while X-ray photoelectron spectroscopy (XPS) measurements confirm the formation of MoO₃ from MoS₂. Control experiments with a plasma generated from a mixture of N₂/O₂/H₂O gases MoS₂ suggest that the rolling mechanism is due to a combination of factors including oxide formation, stresses due to bonding changes, defects in the initial 2D material, and interplanar forces.

中文翻译：

由MoS ₂和WS ₂与大气等离子体形成MoO ₃和WO ₃纳米卷

纳米结构的过渡金属氧化物（TMO）具有令人着迷的电化学和物理特性，使其可用于多种电化学应用。在这里，我们报告了用大气等离子体处理从二维（2D）MoS ₂和WS _2的原子薄层合成MoO ₃和WO ₃纳米卷的过程。这些具有滚压层的结构具有增加的表面体积比，并有望用于电化学应用。纳米涡卷的形貌由原子力显微镜（AFM）表征，而X射线光电子能谱（XPS）测量证实由MoS ₂形成MoO ₃。由N ₂ / O ₂ / H ₂ O气体MoS ₂的混合物产生的等离子体进行的控制实验表明，轧制机理归因于多种因素的结合，包括氧化物形成，因键合变化而产生的应力，初始2D材料中的缺陷和平面间的力。

更新日期：2017-09-14

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