Journal
JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL
Volume 398, Issue -, Pages 86-94Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.molcata.2014.11.024
Keywords
Substituted magnetite; Heterogeneous degradation; Oxone; EXAFS; Sulfate radicals
Categories
Funding
- National Natural Science Foundation of China [41172045, 41302026]
- Institute Cooperation program, Chinese Academy of Sciences [2BY2332301]
- Team Project of Natural Science Foundation of Guangdong Province, China [S2012030006144]
Ask authors/readers for more resources
In this study, the effect of incorporation of transition metals (i.e., Co, Mn, Cr, and Ni) into the magnetite on the reactivity towards Oxone activation was investigated at neutral pH. The magnetite samples were characterized by XRD and EXAFS. Co, Cr, and Ni were in the valences of +2, +3, and +2, respectively, while Mn was in the valences of +2 and +3. These cations occupied the octahedral sites of magnetite, but the distribution of Mn and Ni on the octahedral sites of magnetite surface increased with an increase of substitution extent. The activity of magnetites in Oxone activation was investigated through Acid Orange II (AOII) degradation at an initial pH of 7.0 with or without phosphate-buffered solution. In neutral medium, the AOII degradation by Mn, Cr, and Ni substituting magnetites followed pseudo-first-order kinetics. The incorporation of Co, Mn, and Ni improved the catalytic activity of magnetite in the order Mn
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available