Abstract
Carbon nanotubes (CNT) are synthesized by catalytic chemical vapor deposition with different compositions of Ni–La–O catalyst precursors obtained by citric acid complexometry. Only two compounds: LaNiO 3 (perovskite-type crystal structure, hexagonal system) and La 2NiO 4 (spinel-type crystal structure, orthorhombic system) in the obtained Ni–La–O catalyst precursors have the ability to grow CNT. Moreover, CNT obtained with the two different crystal structure catalyst precursors have different characteristics: different yield, pattern and oxidation resistance performance.
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