Abstract：
:In this study, Cu(0) was synthesized with NaBH4 as a reducing agent for Cu(II) and used to activate dissolved molecular oxygen (O2) under acidic conditions. The Cu(0) synthesized had much higher activity than the purchased. The roles of Cu was clarified and the formation of reactive oxygen species was discussed through direct detection for the first time. By detecting the valence change of Cu in a CuO system, Bisphenol A (BPA) was found to accelerate the transformation of Cu(II) to Cu(I). Besides, the evidence from electron spin resonance (ESR) studies and scavenging tests revealed the new roles of Cu(0) that Cu(0) could not only convert O2 to produce ·O2-, but also catalyze H2O2 to ·OH. The results from this study offer evidence of new reaction pathways in Cu-activated O2 systems and deepen understanding of the reaction between Cu species and O2.
journal_name
Chemospherejournal_title
Chemosphereauthors
Long J,Xu L,Zhao L,Chu H,Mao Y,Wu Ddoi
10.1016/j.chemosphere.2019.125034subject
Has Abstractpub_date
2020-02-01 00:00:00pages
125034eissn
0045-6535issn
1879-1298pii
S0045-6535(19)32273-8journal_volume
241pub_type
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