Photocatalytic degradation of polyethylene plastics by NiAl2O4 spinels-synthesis and characterization

Over past twenty years, daily usage of Microplastics (MPs) and their pollution are gradually increasing. Especially, the polyethylene bags were used for food storage. So their productivity as well discarding after use are rapidly growing and shown their great impact on the environment. Hence, there...

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Bibliographic Details
Published in:Chemosphere (Oxford) 2021-02, Vol.265, p.129021-129021, Article 129021
Main Authors: Venkataramana, Challarapu, Botsa, Sathish Mohan, Shyamala, P., Muralikrishna, R.
Format: Article
Language:English
Subjects:
Degradation
NiAl2O4
Photocatalysis
Polyethylene plastics
Spinel
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Summary:Over past twenty years, daily usage of Microplastics (MPs) and their pollution are gradually increasing. Especially, the polyethylene bags were used for food storage. So their productivity as well discarding after use are rapidly growing and shown their great impact on the environment. Hence, there is need to control the plastics from environment decomposition. For that, we have attempted that preparation of NiAl2O4 Spinels by two different methods such as co-precipitation and hydrothermal. The synthesized spinels were thoroughly studied by some instrumental techniques like X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM-EDX), Fourier transform infrared (FT-IR), and ultraviolet (UV–Vis) spectrophotometer). The photocatalytic experiment was adopted for the degradation of commercially available polyethylene bags using prepared spinels. The obtained results from FTIR after degradation process confirmed that the polyethylene sheet was degraded in 5 h with the help of prepared spinels and the weight loss is 12.5% obtained using hydrothermally prepared spinels. This study shows new path to develop more functional materials for the degradation of MPs. [Display omitted] •Photodegradation of polyethylene plastics (PPs) was studied in this study.•NiAl2O4 Spinels were synthesized by Co-ppt and Hydrothermal approaches.•Both synthetic routes were studied.•PPs were effectively degraded in 5 h (12.5% wt loss).•Hydrothermal assisted synthesis of NiAl2O4 Spinels showed great degradation rate.
ISSN:0045-6535
1879-1298
DOI:10.1016/j.chemosphere.2020.129021