Iranian Journal of Chemistry

Iranian Journal of Chemistry

Preparation and characterization of zinc metal-organic framework/polyurethane spongy composites as oil absorbents

Document Type : Original Article

Authors
Zeinab Ansari-Asl
Yasmin Saadavi
Department of Chemistry, Faculty of Sciences, Shahid Chamran University of Ahvaz, Ahvaz, Iran
10.22036/cr.2024.441303.1231
Abstract
Today, due to the development of many industries and factories, the discharge of oily wastewater, organic pollutants and frequent oil spills, numerous pollutions have observed in the waters. Adsorption (filtration) is considered one of the most effective methods for removing oily pollutants. In this research, the ZIF-8 was first prepared, functionalized with octadecylamine (m-ZIF-8), and then incorporated into the polyurethane sponge using polydimethylsiloxane (PDMS). PDMS simultaneously acted as a ZIF-8 binder to polyurethane and also led to the hydrophobicity of the composite. The prepared materials were first investigated by infrared spectroscopy (FT-IR). Then, X-ray diffraction (XRD) analysis, scanning electron microscope (SEM) imaging, and EDS map analysis were performed. Finally, the absorption efficiency of different oils such as olive oil, sunflower oil, motor oil, and diesel was studied for the as-prepared adsorbents. The obtained results showed that the loading of ZIF-8 and m-ZIF-8 has led to an increase in the hydrophobicity of the polyurethane sponge and, as a result, an increase in the oil absorption efficiency from 42.02% to 50.07-67.95%.

Graphical Abstract

Preparation and characterization of zinc metal-organic framework/polyurethane spongy composites as oil absorbents
Keywords
Composite
Octadecylamine
Oil adsorption
Polyurethane
Zinc Metal-organic framework

Subjects

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Iranian Journal of Chemistry
Volume 6, Issue 2 - Serial Number 11
December 2023
Pages 223-230

  • Receive Date 02 February 2024
  • Revise Date 18 March 2024
  • Accept Date 06 April 2024