单层
材料科学
纳米颗粒
碳纳米管
双功能
纳米技术
化学气相沉积
基质(水族馆)
催化作用
膦酸盐
化学工程
氧化物
乙炔
硅
有机化学
化学
冶金
工程类
地质学
海洋学
作者
Abdul Hoque,Ahamed Ullah,Beth S. Guiton,Noe T. Alvarez
出处
期刊:C
[MDPI AG]
日期:2021-11-19
卷期号:7 (4): 79-79
被引量:1
摘要
Carbon nanotubes (CNTs) offer unique properties that have the potential to address multiple issues in industry and material sciences. Although many synthesis methods have been developed, it remains difficult to control CNT characteristics. Here, with the goal of achieving such control, we report a bottom-up process for CNT synthesis in which monolayers of premade aluminum oxide (Al2O3) and iron oxide (Fe3O4) nanoparticles were anchored on a flat silicon oxide (SiO2) substrate. The nanoparticle dispersion and monolayer assembly of the oleic-acid-stabilized Al2O3 nanoparticles were achieved using 11-phosphonoundecanoic acid as a bifunctional linker, with the phosphonate group binding to the SiO2 substrate and the terminal carboxylate group binding to the nanoparticles. Subsequently, an Fe3O4 monolayer was formed over the Al2O3 layer using the same approach. The assembled Al2O3 and Fe3O4 nanoparticle monolayers acted as a catalyst support and catalyst, respectively, for the growth of vertically aligned CNTs. The CNTs were successfully synthesized using a conventional atmospheric pressure-chemical vapor deposition method with acetylene as the carbon precursor. Thus, these nanoparticle films provide a facile and inexpensive approach for producing homogenous CNTs.
科研通智能强力驱动
Strongly Powered by AbleSci AI