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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
2
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
2
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
3
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
4
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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Electronic Supplementary Material (ESI) for Dalton TransactionsThis journal is © The Royal Society of Chemistry 2013
5
(a)
Electronic Supplementary Material (ESI) for Dalton TransactionsThis journal is © The Royal Society of Chemistry 2013
6
(b)
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
7
Figure S5. SEM images of Ca2Mn3O8.
Electronic Supplementary Material (ESI) for Dalton TransactionsThis journal is © The Royal Society of Chemistry 2013
8
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
9
Figure S7. SEM images of CaMn3O6.
Electronic Supplementary Material (ESI) for Dalton TransactionsThis journal is © The Royal Society of Chemistry 2013
10
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
11
Figure S9. SEM images of CaMn4O8.
Electronic Supplementary Material (ESI) for Dalton TransactionsThis journal is © The Royal Society of Chemistry 2013
12
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
13
Figure S11. SEM images of CaMnO3.
Electronic Supplementary Material (ESI) for Dalton TransactionsThis journal is © The Royal Society of Chemistry 2013
14
Figure S12. SEM images of CaMnO3 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
15
Figure S13. SEM images of Mn2O3.
Electronic Supplementary Material (ESI) for Dalton TransactionsThis journal is © The Royal Society of Chemistry 2013
16
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
17
Figure S15. SEM images of Mn3O4.
Electronic Supplementary Material (ESI) for Dalton TransactionsThis journal is © The Royal Society of Chemistry 2013
18
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
19
Figure S17. SEM images of layered Mn Oxide.
Electronic Supplementary Material (ESI) for Dalton TransactionsThis journal is © The Royal Society of Chemistry 2013
20
Figure S18. SEM images of layered Mn oxide 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
21
a
Electronic Supplementary Material (ESI) for Dalton TransactionsThis journal is © The Royal Society of Chemistry 2013
22
b
Electronic Supplementary Material (ESI) for Dalton TransactionsThis journal is © The Royal Society of Chemistry 2013
23
c
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
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