This study aimed to synthesise carbon nanotubes (CNTs) from waste chicken fat as a carbon precursor and ferrocene as a catalyst. The method used in this study was thermal chemical vapour deposition. Several parametric studies were conducted to optimise the growth of CNTs from waste chicken fat. A new carbon precursor from gutter oil was also explored. The samples were characterised using electron microscopy, energy dispersive X-ray, X-ray diffraction, micro-Raman spectroscopy and thermogravimetric analysis. Field emission properties of the selected samples were analysed using field electron emission (FEE) measurements. The findings showed that the oil extracted from the mixture of fat-skin that were chopped into pieces and heated using oven was able to produce a dense vertically aligned CNTs (VACNTs) with small diameter (18.1-31.2 nm) and high crystallinity. Meanwhile, heating rate of 70 °C min-1, synthesis and vaporisation temperature of 800 and 570 °C, respectively, catalyst concen.....

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