Cruz-Silva Eduardo, Cullen David A, Gu Lin, Romo-Herrera Jose Manuel, Muñoz-Sandoval Emilio, López-Urías Florentino, Sumpter Bobby G, Meunier Vincent, Charlier Jean-Christophe, Smith David J, Terrones Humberto, Terrones Mauricio
Advanced Materials Department, IPICyT, Camino a Presa San José, 2055, San Luis Potosí 78216, México.
ACS Nano. 2008 Mar;2(3):441-8. doi: 10.1021/nn700330w.
Arrays of multiwalled carbon nanotubes doped with phosphorus (P) and nitrogen (N) are synthesized using a solution of ferrocene, triphenyl-phosphine, and benzylamine in conjunction with spray pyrolysis. We demonstrate that iron phosphide (Fe(3)P) nanoparticles act as catalysts during nanotube growth, leading to the formation of novel PN-doped multiwalled carbon nanotubes. The samples were examined by high resolution electron microscopy and microanalysis techniques, and their chemical stability was explored by means of thermogravimetric analysis in the presence of oxygen. The PN-doped structures reveal important morphology and chemical changes when compared to N-doped nanotubes. These types of heterodoped nanotubes are predicted to offer many new opportunities in the fabrication of fast-response chemical sensors.
采用二茂铁、三苯基膦和苄胺的溶液结合喷雾热解合成了掺杂磷（P）和氮（N）的多壁碳纳米管阵列。我们证明磷化铁（Fe(3)P）纳米颗粒在纳米管生长过程中起催化剂作用，导致形成新型PN掺杂多壁碳纳米管。通过高分辨率电子显微镜和微分析技术对样品进行了检查，并在有氧条件下通过热重分析探索了它们的化学稳定性。与N掺杂纳米管相比，PN掺杂结构显示出重要的形态和化学变化。预计这些类型的异质掺杂纳米管在快速响应化学传感器的制造中会提供许多新机会。
