Page 57 - Book of Invited & Keynotes Talks

th
8 Biannual Conference on Chemistry - CHEM 08

Carbon Dioxide Sequestration using Modified Nanoparticles
Nezar H. Khdary
King Abdulaziz City for Science and Technology (KACST)

ABSTRACT
The carbon dioxide emission of the year 2019 had been increased around 2%
which needs to develop a new technology to overawe this issue. CO2 has an
important influence than any other component to climate change. In this
work, the CO2 uptake using Modified- Amine-Nanoparticles will be talked.

Metal-amine-silica nanoparticles were utilized for CO2 capture. The surface
was first modified using surface functionalization chemistry with N-[3-
(trimethoxysilyl)propyl]ethylenediamine (PEDA) as coupling agents,
followed by complexation with metal ions to produce metal ion–
ethylenediamine–silica nanocomposites. Finally, the metal ions were
converted to metal nanoparticles by redox chemistry. This process formed
uniform metal nanoparticles on the silica surface. The metal

nanoparticle grafted silica composites were characterized by a number of
techniques such as FTIR spectroscopy, thermogravimetric analysis, element
analysis (CHN), X-ray diffraction, energy dispersive X-ray spectroscopy
(EDX), surface area analysis, scanning transmission electron microscopy and
gas analysis system.

Cu and Ag nanoparticles showed a uniform distribution into the silica
surface. The diameter of metal nanoparticles was around 10 nm and the
capacity of carbon dioxide for nanocomposites was significantly increased
by 100%. Silica-Cu nanoparticles show the optimum capacity of 0.52
mmol/g. This method will touch new horizon of cheap catalyst for the
synthesis of a variety of metal nano- composites for their probable
applications in greenhouse gas sequestration.

BOOK OF INVITED SPEAKERS & KEYNOTES CHEM 08 (2020) Page 57