Kim Tae Hyeong, Nam Dong Hwan, Kim Do-Hyun, Leem Gyu, Lee Seunghyun
Department of Applied Chemistry, Hanyang University ERICA, Ansan 15588, Korea.
Center for Bionano Intelligence Education and Research, Hanyang University ERICA, Ansan 15588, Korea.
Polymers (Basel). 2022 Jul 20;14(14):2942. doi: 10.3390/polym14142942.
This study aims to increase the specific surface area of multi-walled carbon nanotubes (MWCNTs) by forming and subsequently removing various metal oxide nanoparticles on them. We used facile methods, such as forming the particles without using a vacuum or gas and removing these particles through simple acid treatment. The shapes of the composite structures on which the metal oxide particles were formed and the formation of multi-vacancy-defect MWCNTs were confirmed via transmission electron microscopy and scanning electron microscopy. The crystallinity of the formed metal oxide particles was confirmed using X-ray diffraction analysis. Through specific surface area analysis and Raman spectroscopy, the number of defects formed and the degree and tendency of defect-formation in each metal were determined. In all the cases where the metal oxide particles were removed, the specific surface area increased, and the metal inducing the highest specific surface area was determined.
本研究旨在通过在多壁碳纳米管（MWCNTs）上形成并随后去除各种金属氧化物纳米颗粒来增加其比表面积。我们采用了简便的方法，例如在不使用真空或气体的情况下形成颗粒，并通过简单的酸处理去除这些颗粒。通过透射电子显微镜和扫描电子显微镜确认了形成金属氧化物颗粒的复合结构的形状以及多空位缺陷MWCNTs的形成。使用X射线衍射分析确认了所形成金属氧化物颗粒的结晶度。通过比表面积分析和拉曼光谱，确定了形成的缺陷数量以及每种金属中缺陷形成的程度和趋势。在所有去除金属氧化物颗粒的情况下，比表面积均增加，并确定了诱导最高比表面积的金属。
