Diatomite/Cu/Al layered double hydroxide hybrid composites for polyethylene degradation

A diatomite/Cu/Al layered double hydroxide hybrid composite (DI-LDH) was synthesized using the hydrothermal method. The synthesized DI-LDH composites were characterized via X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM) and the Brunauer-E...

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Bibliographic Details
Published in:RSC advances 2020-03, Vol.1 (17), p.988-9813
Main Authors: Fu, Nengshuo, Zhang, Shuhua, Ma, Yingying, Yang, Zhuo, Liu, Weijun
Format: Article
Language:English
Subjects:
Aluminum
Carbon monoxide
Chemistry
Copper
Degradation
Diatomaceous earth
Fourier transforms
Hybrid composites
Hydroxides
Infrared spectroscopy
Photoelectrons
Polyethylene
Polyethylenes
Polymer matrix composites
Pyrolysis
Spectrum analysis
Synthesis
X ray photoelectron spectroscopy
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Summary:A diatomite/Cu/Al layered double hydroxide hybrid composite (DI-LDH) was synthesized using the hydrothermal method. The synthesized DI-LDH composites were characterized via X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM) and the Brunauer-Emmett-Teller (BET) method. Polyethylene degradation over DI-LDH was studied in a batch reactor. DI-LDH showed layered structures, indicating that the diatomite/Cu/Al double hydroxide hybrid was successfully synthesized. A significant decrease in the degradation temperature and the released amounts of CO and CO 2 was observed in the DI-LDH catalytic degradation reaction, which indicated that DI-LDH was helpful for the polyethylene degradation reaction. The X-ray photoelectron spectroscopy (XPS) results suggested that the reaction of Cu 2+ → Cu + occurred in polyethylene catalytic pyrolysis, which resulted in the decrease in the released CO amount. DI-LDH may be a potential environmental catalyst that can be applied to treat LDPE waste. DI-LDH that can reduce the pyrolysis temperature of LDPE and the release of carbon monoxide (CO) and carbon dioxide (CO 2 ).
ISSN:2046-2069
2046-2069
DOI:10.1039/c9ra10940d