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碳纳米管在3-氨丙基三乙氧基硅烷（APTES）表面功能化硅基底上的电泳沉积

Electrophoretic Deposition of Carbon Nanotubes on 3-Amino-Propyl-Triethoxysilane (APTES) Surface Functionalized Silicon Substrates.

作者信息

Sarkar Anirban, Daniels-Race Theda

机构信息

Division of Electrical and Computer Engineering, School of Electrical Engineering and Computer Science, Louisiana State University, 3101 P. F. Taylor Hall, Baton Rouge, LA 70803, USA.

出版信息

Nanomaterials (Basel). 2013 May 13;3(2):272-288. doi: 10.3390/nano3020272.

DOI:10.3390/nano3020272
PMID:28348335
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5327890/
Abstract

Fabrication of uniform thin coatings of multi-walled carbon nanotubes (MWCNTs) by electrophoretic deposition (EPD) on semiconductor (silicon) substrates with 3-aminopropyl-triethoxysilane (APTES) surface functionalization has been studied extensively in this report. The gradual deposition and eventual film formation of the carbon nanotubes (CNTs) is greatly assisted by the Coulombic force of attraction existing between the positively charged -NH₂ surface groups of APTES and the acid treated, negatively charged nanotubes migrating towards the deposition surfaces. The remarkable deposition characteristics of the CNT coatings by EPD in comparison to the dip coating method and the influence of isopropyl (IPA)-based CNT suspension in the fabricated film quality has also been revealed in this study. The effect of varying APTES concentration (5%-100%) on the Raman spectroscopy and thickness of the deposited CNT film has been discussed in details, as well. The deposition approach has eliminated the need of metal deposition in the electrophoretic deposition approach and, therefore, establishes a cost-effective, fast and entirely room temperature-based fabrication strategy of CNT thin films for a wide range of next generation electronic applications.

摘要

本报告广泛研究了通过电泳沉积（EPD）在经过3-氨丙基三乙氧基硅烷（APTES）表面功能化的半导体（硅）衬底上制备均匀的多壁碳纳米管（MWCNT）薄涂层。APTES带正电荷的-NH₂表面基团与经酸处理、带负电荷且向沉积表面迁移的纳米管之间存在的库仑吸引力极大地促进了碳纳米管（CNT）的逐步沉积及最终成膜。本研究还揭示了与浸涂法相比，EPD法制备CNT涂层的显著沉积特性，以及基于异丙醇（IPA）的CNT悬浮液对所制备薄膜质量的影响。此外，还详细讨论了不同APTES浓度（5%-100%）对沉积CNT薄膜的拉曼光谱和厚度的影响。该沉积方法无需在电泳沉积方法中进行金属沉积，因此建立了一种经济高效、快速且完全基于室温的CNT薄膜制备策略，可用于广泛的下一代电子应用。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fd41/5327890/4acaa54aa358/nanomaterials-03-00272-g011.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fd41/5327890/a27bdbf97f76/nanomaterials-03-00272-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fd41/5327890/876863bae76f/nanomaterials-03-00272-g008.jpg
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