Nano Express

Nanoscale Research Letters

, Volume 5, Issue 2, pp 279-285

Open Access This content is freely available online to anyone, anywhere at any time.

Preparation of Aligned Ultra-long and Diameter-controlled Silicon Oxide Nanotubes by Plasma Enhanced Chemical Vapor Deposition Using Electrospun PVP Nanofiber Template

  • Ming ZhouAffiliated withKey Laboratory For Magnetism and Magnetic Materials of the Ministry of Education, Lanzhou University
  • , Jinyuan ZhouAffiliated withKey Laboratory For Magnetism and Magnetic Materials of the Ministry of Education, Lanzhou University
  • , Ruishan LiAffiliated withKey Laboratory For Magnetism and Magnetic Materials of the Ministry of Education, Lanzhou University
  • , Erqing XieAffiliated withKey Laboratory For Magnetism and Magnetic Materials of the Ministry of Education, Lanzhou University Email author 

Abstract

Well-aligned and suspended polyvinyl pyrrolidone (PVP) nanofibers with 8 mm in length were obtained by electrospinning. Using the aligned suspended PVP nanofibers array as template, aligned ultra-long silicon oxide (SiOx) nanotubes with very high aspect ratios have been prepared by plasma-enhanced chemical vapor deposition (PECVD) process. The inner diameter (20–200 nm) and wall thickness (12–90 nm) of tubes were controlled, respectively, by baking the electrospun nanofibers and by coating time without sacrificing the orientation degree and the length of arrays. The micro-PL spectrum of SiOx nanotubes shows a strong blue–green emission with a peak at about 514 nm accompanied by two shoulders around 415 and 624 nm. The blue–green emission is caused by the defects in the nanotubes.

Keywords

Electrospinning PECVD SiOx nanotubes TUFT process