Synthesis and characterization of carbon nanospheres by catalytic CVD method

Kadhim Rashid Gbashi

doi:10.30723/ijp.v15i35.55

Abstract

Carbon nanospheres (CNSs) were successfully prepared and synthesized by Catalytic Chemical Vapor Deposition (CCVD) by using camphor as carbon source only, over iron Cobalt (Fe-Co) saturated zeolite at temperature between (700 oC and 900 °C), with different concentrations of camphor, and reaction time. The synthesized CNSs were characterized using Scanning Electron Microscopy (SEM), X-ray diffraction spectroscopy (XRD), and Fourier Transform Infrared (FTIR). The carbon spheres in different sizes between 100 nm and 1000 nm were investigated. This work has done by two parts, first preparation of the metallic catalyst and second part formation CNSs by heat treatment.

Highlights

As early as 1985, the discovery of bucky balls publicised a renewed interest in new forms of the carbon materials
It is known as thermal chemical vapor deposition (CVD) or catalytic CVD
If a solid hydrocarbon is to be used as the carbon nanospheres (CNSs) precursor, it can be directly kept in the low-temperature zone of the reaction tube

Summary

Introduction

As early as 1985, the discovery of bucky balls publicised a renewed interest in new forms of the carbon materials. The incomparable unique properties of CNSs make them an attractive material for a difference or variety of potential applications, such as energy-storage devices, lubricating materials; fabricate diamond films, super capacitors, catalyst supports, super conductivity, and special rubber additives [7, 8]. Most of the Carbon Nano Materials (CNMs) have been synthesized from precursors based on the fossil fuels such as acetylene and petroleum products. Chemical vapor deposition (CVD) is the most popular thermal decomposition of a hydrocarbon vapor is achieved in the presence of a metal catalyst. Volatile materials (ferrocene, camphor, naphthalene, etc.) directly turn from solid to vapor, and perform CVD while passing over the catalyst kept in the high-temperature zone. After (20, 25, 30) min reaction time, the furnaces were allowed to natural cooling to room temperature under argon flow and the carbon product on the zeolite was collected, weighed and characterized

Factors interaction of growth mechanism

Conclusions