Common salts directed the growth of metal-free horizontal SWNT arrays,Nanoscale

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Common salts directed the growth of metal-free horizontal SWNT arrays
Nanoscale ( IF 5.8 ) Pub Date : 2022-12-12 , DOI: 10.1039/d2nr05361f
Yi Yu ₁ , Xiaoyue Sun ₂ , Ran Du ₂ , Hongjie Zhang ₁ , Dayan Liu ₁ , Ying Wang ₁ , Xinyu Zhang ₁ , Wenyu Zhang ₃ , Shuchen Zhang ₄ , Jinjie Qian ₁ , Yue Hu ₁ , Shaoming Huang _{1,

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Affiliation

Acquiring metal-free horizontal single-walled carbon nanotube (SWNT) arrays is of paramount importance for the development of stable nanodevices. However, the majority of SWNTs are prepared with transition metal-based catalysts, which will inevitably leave metallic residuals and deteriorate the device performance. Here, green and low-cost NaCl is developed as a metal-free catalyst. By employing a strategy of rapid nucleation at a higher temperature followed by steady growth at a lower temperature, the production of a well-defined NaCl catalyst capable of growing metal-free horizontal SWNT arrays with an average density of ∼100 tubes per 100 μm is realized. Besides, we prove that the as-grown metal-free SWNT arrays have a unique advantage in preparing stable devices for eliminating the potential risk of local mass catalyst residuals. Hence, the current study can offer a feasible solution to promote practical applications of SWNT-based next-generation nanodevices.

中文翻译：

普通盐引导无金属水平单壁碳纳米管阵列的生长

获得无金属水平单壁碳纳米管 (SWNT) 阵列对于开发稳定的纳米器件至关重要。然而，大多数单壁碳纳米管都是用过渡金属基催化剂制备的，这将不可避免地留下金属残留物并降低器件性能。在这里，绿色和低成本的 NaCl 被开发为无金属催化剂。通过采用在较高温度下快速成核然后在较低温度下稳定生长的策略，生产一种定义明确的 NaCl 催化剂，能够生长平均密度为 ~100 管/100 μm 的无金属水平 SWNT 阵列。实现了。此外，我们证明了生长的无金属单壁碳纳米管阵列在制备稳定装置以消除局部质量催化剂残留的潜在风险方面具有独特的优势。因此，

更新日期：2022-12-12

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