PMID- 16852621
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20070626
LR  - 20060720
IS  - 1520-6106 (Print)
IS  - 1520-5207 (Linking)
VI  - 109
IP  - 27
DP  - 2005 Jul 14
TI  - Heterogeneous activation of oxone using Co3O4.
PG  - 13052-5
AB  - This study explores the potential of heterogeneous activation of Oxone 
      (peroxymonosulfate) in water using cobalt oxides. Two commercially available 
      cobalt oxides, CoO and Co3O4 (CoO.Co2O3) were tested for the activation of 
      peroxymonosulfate and the consequent oxidation of 2,4-dichlorophenol (2,4-DCP) 
      via a sulfate radical mechanism. Both systems, CoO/Oxone and Co3O4/Oxone, were 
      tested at acidic and neutral pH and compared with the homogeneous Co(NO3)2/Oxone. 
      The activity of these systems was evaluated on the basis of the induced 
      transformation of 2,4-DCP as well as the dissolution of cobalt occurred after 2 h 
      of reaction. It was observed that only Co3O4 activates peroxymonosulfate 
      heterogeneously, with its heterogeneity being more pronounced at neutral pH. Both 
      CoO and Co2O3 contained in Co3O4 might be responsible for the observed 
      heterogeneity, and the relative mechanisms are further discussed here. To our 
      knowledge, this is perhaps the first study that documents the heterogeneous 
      activation of peroxymonosulfate with cobalt, the best-known catalyst-activator 
      for this inorganic peroxide.
FAU - Anipsitakis, George P
AU  - Anipsitakis GP
FAU - Stathatos, Elias
AU  - Stathatos E
FAU - Dionysiou, Dionysios D
AU  - Dionysiou DD
LA  - eng
PT  - Letter
PL  - United States
TA  - J Phys Chem B
JT  - The journal of physical chemistry. B
JID - 101157530
EDAT- 2006/07/21 09:00
MHDA- 2006/07/21 09:01
CRDT- 2006/07/21 09:00
PHST- 2006/07/21 09:00 [pubmed]
PHST- 2006/07/21 09:01 [medline]
PHST- 2006/07/21 09:00 [entrez]
AID - 10.1021/jp052166y [doi]
PST - ppublish
SO  - J Phys Chem B. 2005 Jul 14;109(27):13052-5. doi: 10.1021/jp052166y.