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Electronic Supplementary Information
Water oxidation by manganese oxides, a new step towards
a complete picture: Simplicity is the ultimate sophistication
Mohammad Mahdi Najafpour* and Davood Jafarian Sedigh
Table of Contents
Page
The reactor set-up for oxygen evolution
experiment
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The XRD patterns 3-6
SEM Images 7-20
TEM Images 21-23
Electronic Supplementary Material (ESI) for Dalton TransactionsThis journal is © The Royal Society of Chemistry 2013
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Figure S1. The reactor set-up for oxygen evolution experiment in the presence of Ce(IV).
Electronic Supplementary Material (ESI) for Dalton TransactionsThis journal is © The Royal Society of Chemistry 2013
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Figure S2. The XRD patterns show that both Mn2O3 and CaMn3O6 compounds after reaction with Ce(IV)
convert to the same compound with layered structure.
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Electronic Supplementary Material (ESI) for Dalton TransactionsThis journal is © The Royal Society of Chemistry 2013
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Figure S3. XRD patterns obtained from Ca2Mn3O8 (blue), CaMnO3 (pink), CaMn4O8 (green) and Mn3O4
(red) after reaction by Ce(IV) (1.8 M, one months) by FFT method. FFT Filter Smoothing is a signal
processing technique typically used to remove noise from signals. For more information see:
http://www.originlab.com/www/helponline/Origin/en/Category/Smoothing.html.
Very careful analysis of XRD with FFT method shows that crystalline phases from many samples
(Ca2Mn3O8, CaMnO3, CaMn4O8) are not changed but convert to a layered phase with poor crytalinity.
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(a)
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Figure S4. Details for XRD patterns obtained for Mn3O4 (a) and CaMnO3 (b).
Electronic Supplementary Material (ESI) for Dalton TransactionsThis journal is © The Royal Society of Chemistry 2013
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Figure S5. SEM images of Ca2Mn3O8.
Electronic Supplementary Material (ESI) for Dalton TransactionsThis journal is © The Royal Society of Chemistry 2013
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Figure S6. SEM images of Ca2Mn3O8 after treating with Ce(IV) (1.8 M, for one month).
Electronic Supplementary Material (ESI) for Dalton TransactionsThis journal is © The Royal Society of Chemistry 2013
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Figure S7. SEM images of CaMn3O6.
Electronic Supplementary Material (ESI) for Dalton TransactionsThis journal is © The Royal Society of Chemistry 2013
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Figure S8. SEM images of CaMn3O6 after treating with Ce(IV) (1.8 M, for one month).
Electronic Supplementary Material (ESI) for Dalton TransactionsThis journal is © The Royal Society of Chemistry 2013
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Figure S9. SEM images of CaMn4O8.
Electronic Supplementary Material (ESI) for Dalton TransactionsThis journal is © The Royal Society of Chemistry 2013
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Figure S10. SEM images of CaMn4O8 after treating with Ce(IV) (1.8 M, for one month).
Electronic Supplementary Material (ESI) for Dalton TransactionsThis journal is © The Royal Society of Chemistry 2013
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Figure S11. SEM images of CaMnO3.
Electronic Supplementary Material (ESI) for Dalton TransactionsThis journal is © The Royal Society of Chemistry 2013
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Figure S12. SEM images of CaMnO3 after treating with Ce(IV) (1.8 M, for one month).
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Figure S13. SEM images of Mn2O3.
Electronic Supplementary Material (ESI) for Dalton TransactionsThis journal is © The Royal Society of Chemistry 2013
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Figure S14. SEM images of Mn2O3 after treating with Ce(IV) (1.8 M, for one month).
Electronic Supplementary Material (ESI) for Dalton TransactionsThis journal is © The Royal Society of Chemistry 2013
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Figure S15. SEM images of Mn3O4.
Electronic Supplementary Material (ESI) for Dalton TransactionsThis journal is © The Royal Society of Chemistry 2013
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Figure S16. SEM images of Mn3O4 after treating with Ce(IV) (1.8 M, for one month).
Electronic Supplementary Material (ESI) for Dalton TransactionsThis journal is © The Royal Society of Chemistry 2013
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Figure S17. SEM images of layered Mn Oxide.
Electronic Supplementary Material (ESI) for Dalton TransactionsThis journal is © The Royal Society of Chemistry 2013
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Figure S18. SEM images of layered Mn oxide after treating with Ce(IV) (1.8 M, for one month).
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a
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Figure S19. TEM images of layered Mn oxide after treating with Ce(IV) (1.8 M, for one month) (a-c).
Electronic Supplementary Material (ESI) for Dalton TransactionsThis journal is © The Royal Society of Chemistry 2013