Synthesis of carbon-based nano materials for hydrogen storage

Nilgün Karatepe*, Neslihan Yuca, B. Filiz Şenkal

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)

Abstract

The aim of this study was to synthesize the carbon-based nanomaterials and determine their hydrogen storage capacities. Carbon nanotubes (CNTs) were first synthesized by chemical vapor deposition (CVD) of acetylene (C 2H 2) on a magnesium oxide (MgO) powder impregnated with an iron nitrate (Fe(NO 3)39H 2O) solution. The synthesis parameters were selected as the synthesis temperatures of 500 and 800°C, the iron content in the precursor of 5% and the synthesis time of 30 minutes. The synthesized material was purified by using HCl at 75°C for 15 hours. After synthesis of CNTs, the polyaniline-doped H 3BO 3 and BF 3 and composites were prepared by coagulation method. The synthesized CNTs and composites were characterized by transmission electron microscopy, FT-IR spectroscopy, Raman spectroscopy and thermogravimetric analyzer. The BET specific surface areas were obtained from the nitrogen adsorption isotherms at -196°C. The hydrogen storage capacities of these carbonaceous materials were measured using volumetric method. It was found that the hydrogen adsorption capacities were changed in the range between 0.44 and 3.67wt% at the liquid nitrogen temperature and gas pressure up to 100 bar.

Original languageEnglish
Pages (from-to)31-46
Number of pages16
JournalFullerenes Nanotubes and Carbon Nanostructures
Volume21
Issue number1
DOIs
Publication statusPublished - 1 Jan 2013

Keywords

  • Carbon nanotubes
  • composite
  • doping material
  • hydrogen storage
  • polyaniline

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