1
Electronic
Supporting Information for
Effect of Interlayer Anions on [NiFe]
-‐
LDH Nanosheet Water Oxidation Activity
B. M. Hunter,
a
W. Hieringer,
b
J. R. Winkler,
a
H. B.
Gray
a
and A. M. Müller*
a
a
Beckman Institute and Division of Chemistry and Chemical Engineering, California Institute of Technology, M/C 139
-‐
74,
Pasadena, California 91125
, USA
.
Email: astridm@caltech.edu
b
Theoretical Chemistry
and Interdisciplinary Center
for Molecular Materials
, Department of Chemistry and Pharmacy, Fri
e-‐
drich
-‐
Alexander
Universität
Erlangen
-‐
Nürnberg,
Egerlandstrasse 3, 91058 Erlangen, Germany.
Electronic
Supplementary
Material
(ESI)
for
Energy
&
Environmental
Science.
This
journal
is
©
The
Royal
Society
of
Chemistry
2016
2
1
.
X
-‐
Ray photoelectron spectroscopy (XPS) data
Figure S1:
XPS
data of [NiFe]
-‐
LDH nanosheets with different interlayer anions
as synthesized
in the Ni 2p, Fe 2p, C
1s,
N
1s, and O
1s regions.
The materials were
prepared by pulsed
-‐
laser ablation in liquids (PLAL) or by anion exchange
from [NiFe]
-‐
(NO
3
–
)
-‐
LDH (exch.).
Open circles, data; black lines, peak fits;
grey
lines, envelopes.
The blue line in the C
1s
panel indicates the binding energy of adventitious carbon.
Figure S2:
XPS data of [NiFe]
-‐
LDH nanosheets with different interlayer anions after suspension in
1.0
M aqueous KOH
in ambient air in the Ni 2p, Fe 2p, C
1s, N
1s, and O
1s regions.
The materials were
prepared by pulsed
-‐
laser ablation
in liquids (PLAL) or by anion exchange from [NiFe]
-‐
(NO
3
–
)
-‐
LDH (exch.).
Open circles, data; black lines, peak fits;
grey
lines, envelopes.
The blue line in the C
1s panel indicates the binding energy of adventitious carbon.