a core-shell templated approach to the nanocomposites of ... · a core-shell templated approach to...
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Electronic Supplementary Information
A Core-shell templated approach to the nanocomposites of
silver sulfide and noble metal nanoparticles with
hollow/cage-bell structures
Hui Liu,ab
Feng Ye,a Hongbin Cao,
c Ge Ji,
d Jim Yang Lee
d* and Jun Yang
a*
a State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese
Academy of Sciences, Beijing, China 100190. Fax: 86-10-8254 4814; Tel: 86-10-8254 4915; E-
mail: [email protected] (JY)
b University of Chinese Academy of Scieneces, No. 19A Yuquan Road, Beijing 100049, China
c Research Centre for Process Pollution Control, Institute of Process Engineering, Chinese
Academy of Sciences, Beijing 100190, China
d Department of Chemical and Biomolecular Engineering, National University of Singapore, 10
Kent Ridge Crescent, Singapore 119260. Fax: 65-6779 1936; Tel: 65-6516 2186; Email:
[email protected] (JYL)
Financial support from the 100 Talents Program of the Chinese Academy of Sciences,
National Natural Science Foundation of China (Project No.: 21173226, 21106151),
and State Key Laboratory of Multiphase Complex Systems, Institute of Process
Engineering, Chinese Academy of Sciences (MPCS-2012-A-11, MPCS-2011-D-08,
MPCS-2010-C-02) is gratefully acknowledged.
Electronic Supplementary Material (ESI) for NanoscaleThis journal is © The Royal Society of Chemistry 2013
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Fig. S1 TEM image (a) and HRTEM image (b) of Ag seed nanoparticles synthesized by
oleylamine reduction of AgNO3.
Fig. S2 EDX analyses of core-shell Ag-Ir (a,b), Ag-Pt (c,d), Ag-Rh (e,f), and Ag-Ru (g,h)
nanoparticles before (a,c,e,g) and after sulfur treatment (b,d,f,h).
20 nm 5 nm
(a) (b)
Ir
Ir Ir
Ir
Ag
Ag
Ag
AgCu
CuCu
Cu
Cu
Cu
C
C
0 5 10 15 20 25
S
Ir
Ir
Co
un
ts /
a.u
.
Energy / keV
Ag
AgAgPt
Cu
PtPt
Cu
Cu
C
0 5 10 15 20 25
SPt
Pt Pt
C
Cu Cu
Cu
Ag
AgAg
Co
un
ts /
a.u
.
Energy / keV
Rh
Rh
Cu
Cu
Cu
C
0 5 10 15 20 25
S
Ag
Ag
Ag
Ag
Rh
RhCu
CCo
un
ts /
a.u
.
Energy / keV
0 5 10 15 20 25
Ru
Ru
Ru AgCu
Cu
C
0 5 10 15 20 25
S
Ru
Ru
Ru
Ag
Ag
AgCu
Cu
C
Co
un
ts /
a.u
.
Energy / keV
(a)
(b)
(c)
(d)
(e)
(f)
(g)
(h)
Electronic Supplementary Material (ESI) for NanoscaleThis journal is © The Royal Society of Chemistry 2013
S3
(a) (b) (c) (d)
Fig. S3 Digital photos of core-shell Ag-Ir (a,b) and Ag-Pt (c,d) nanoparticle solutions before (a,c)
and after (b,d) treatment with element sulfur.
Fig. S4 The UV-visible spectrum of the physical mixture containing toluene and oleylamine.
250 300 350 400 450 500 550 600 650 700
0.0
0.1
0.2
0.3
0.4
Ab
so
rba
nce
/ a
.u.
Wavelength / nm
Electronic Supplementary Material (ESI) for NanoscaleThis journal is © The Royal Society of Chemistry 2013
S4
Sulfur
Au
Ag
Pt
Ag2S
Fig. S5 XRD pattern of the as-prepared Ag2S-hollow Pt nanocomposites, in which the references
for monoclinic Ag2S (JCPDS Card File 140072, blue column) and face-centered cubic Pt (JCPDS
Card File 882343, red column) were also displayed.
Fig. S6 Schematic for the synthesis of Ag2S-cage-bell Au-Pt nanocomposites based on the inside-
out diffusion of Ag in core-shell-shell nanoparticles.
20 30 40 50 60 70 80 90
Inte
nsity /
a.u
.
2 / o
Electronic Supplementary Material (ESI) for NanoscaleThis journal is © The Royal Society of Chemistry 2013
S5
Fig. S7 EDX analyses of core-shell-shell Au-Ag-Pt (a,b) and alloy Ag/Pd (c,d) before (a,c) and
after sulfur treatment (b,d).
Fig. S8 TEM image (a) and HRTEM image (b) of Ag2S-hollow Pt nanocomposites synthesized by
Na2S treatment of core-shell Ag-Pt nanoparticles.
50 nm 5 nm
(a) (b)
Ag
AuAu
Pt
PtPt
Cu
Cu
Cu
C
0 5 10 15 20 25
S
Ag
Ag
Ag
Au
Au
AuAu
Pt
Cu
C
Co
un
ts /
a.u
.
Energy / keV
Pd
Pd
Pd
Ag
Ag
Ag
CuCu
Cu
CuCu
Cu
C
0 5 10 15 20 25
S
Pd
Ag
AgAg
C
Co
un
ts /
a.u
.
Energy / keV
(a) (c)
(b) (d)
Electronic Supplementary Material (ESI) for NanoscaleThis journal is © The Royal Society of Chemistry 2013