Carbon Nanotubes Sensors for Gases Detection in Oil Industry

Abstract

One of the most important uses of carbon nanotubes (CNTs) as a nanosensor for various
polluted gases resulting from the burning of petroleum derivatives containing sulfur compounds
or extracted from the gases associated with petroleum, which are isolated by heat.
In this investigation, we tested the adhesion of gas molecules connected with oil: we examined
the adhesion of gas molecules connected with oil: sulfur dioxide (SO2) and hydrogen sulphide
(H2S) on the surface of ((5,0) zigzag and length (100 nm)) CNTs using DFT calculations to
explore the high sensitivity to nanosensor for these molecules, which have gotten awesome
consideration because of environmental and industrial considerations.
From the results obtained in this study geometry optimization (structural properties) for
nanosensor for useful assention with trial information. While the electronic properties included
calculate total energy, HOMO energies, LUMO energies, ionization potential, electron affinity,
potential electronic chemical, electronegativity, electrochemical hardness and electronic softness,
also, the energy gap of the sensors under study has been calculated and the energy gap varies as
stated by the type of gases to be detected. Moreover, we used orbital analysis counting the DOS
to finding out the possible orbital hybridization between molecules and CNTs. From these
results, we can say that the CNTs under study ((5,0) zigzag and the length (100 nm)) has a high
susceptibility to being an effective nanosensor for the gas molecules connected with the oil. This
type of sensor(CNTs/SO2 or H2S) is standout amongst those a large portion essentialpersonal
protective equipment that is to warn the person of the presence of gases associated with oil,
especially in areas of normal gas extraction.