Author Correction: Degradation and fragmentation behavior of polypropylene and polystyrene in water

Nakatani, Hisayuki; Ohshima, Yuina; Uchiyama, Taishi; Motokucho, Suguru

doi:10.1038/s41598-022-26982-6

Cited by 2 publications

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This color change is due to the valence change of copper ions. We have previously reported that seawater drastically improved PP degradation performance during the AOP under pH control [15,25]. Cl − reacts with OH• generated by degradation actions such as solar irradiation and AOP in seawater and yields Cl 2 .…”

Section: Resultsmentioning

confidence: 99%

Verification of the existence of copper-based antifouling paint particles in the sea and their implications for marine microplastic degradation

Nakatani

YAMASHIRO

Uchiyama

et al. 2023

Preprint

Self Cite

View full text Add to dashboard Cite

Marine microplastics (MP) and microdebris were retrieved from the five sampling stations between Nagasaki port and Goto Island and were classified into six types. Three of these types, MP (A), Si-based (B), and Cu-based (C) paint particles, were predominant. Type C had no depth dependence, regardless of the presence of cuprous oxide with high specific gravity. The dominant size of type C was less than 10 µm and contained 30 to 50 mol% of Cu content. The long stay behavior of type C suggested that it had implications for degrading type A. To clarify this, polypropylene (PP) film samples containing cuprous oxide were prepared, and their accelerated degradation behavior in seawater was investigated using the advanced oxidation process method using the sulfuric acid radical initiator in seawater of different salinity concentrations. Infrared spectroscopy revealed the formation of a copper soap compound in seawater. Scanning electron microscopy/energy-dispersive X-ray spectroscopy analysis indicated that the chemical reactions between Cl− and cuprous oxide produced Cu+ ions. Changes in the number of polymer chain scissions were investigated at various salinity concentrations of seawater. These findings confirm that Cu+ species promote PP autoxidation.

show abstract

Section: Resultsmentioning

confidence: 99%

Verification of the existence of copper-based antifouling paint particles in the sea and their implications for marine microplastic degradation

Nakatani

YAMASHIRO

Uchiyama

et al. 2023

Preprint

Self Cite

View full text Add to dashboard Cite

show abstract

Verification of the existence of copper-based antifouling paint particles in the sea and their implications for marine microplastic degradation

Nakatani

YAMASHIRO

Uchiyama

et al. 2023

Preprint

Self Cite

View full text Add to dashboard Cite

Marine microplastics (MP) and microdebris were retrieved from the five sampling stations between Nagasaki port and Goto Island and were classified into six types. Three of these types, MP (A), Si-based (B), and Cu-based (C) paint particles, were predominant. Type C had no depth dependence, regardless of the presence of cuprous oxide with high specific gravity. The dominant size of type C was less than 10 μm and contained 30 to 50 mol% of Cu content. The long stay behavior of type C suggested that it had implications for degrading type A. To clarify this, polypropylene (PP) film samples containing cuprous oxide were prepared, and their accelerated degradation behavior in seawater was investigated using the advanced oxidation process method using the sulfuric acid radical initiator in seawater of different salinity concentrations. Infrared spectroscopy revealed the formation of a copper soap compound in seawater. Scanning electron microscopy/energy-dispersive X-ray spectroscopy analysis indicated that the chemical reactions between Cl− and cuprous oxide produced Cu+ ions. Changes in the number of polymer chain scissions were investigated at various salinity concentrations of seawater. These findings confirm that Cu+ species promote PP autoxidation.

show abstract

Author Correction: Degradation and fragmentation behavior of polypropylene and polystyrene in water

Cited by 2 publications

References 0 publications

Verification of the existence of copper-based antifouling paint particles in the sea and their implications for marine microplastic degradation

Verification of the existence of copper-based antifouling paint particles in the sea and their implications for marine microplastic degradation

Verification of the existence of copper-based antifouling paint particles in the sea and their implications for marine microplastic degradation

Contact Info

Product

Resources

About