Synthesis of carbon/limonite composite through CVD method

Abstract

Carbon/limonite composite was synthesized through chemical vapor deposition of CH₄ with a help of catalysis of limonite. The limonite was heat-treated at 600°C 5 h in air before the chemical vapor deposition in order to remove impurities. When synthesis temperature was over 889°C, carbon was deposited on the limonite. Moreover, when synthesis temperature was over 1025°C, soot deposition was observed on the inner wall of reaction tube. The amount of the deposits increased with increasing synthesis temperature and time. The obtained composite was attracted by magnet.