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Supplementary Materials
Z-Scheme Pt@CdS/3DOM-SrTiO3 Composite with
Enhanced Photocatalytic Hydrogen Evolution from Water
Splitting
Authored by
Yue Chang,a,b,c Ying Xuan,a Chenxi Zhang,b He Hao,b Kai Yu,a*
Shuangxi Liub,d
a MOE Key Laboratory of Pollution Processes and Environmental Criteria, College of
Environmental Science and Engineering, Nankai University, Tianjin 300350, People's Republic of
China
b Institute of New Catalytic Materials Science and MOE Key Laboratory of Advanced Energy
Materials Chemistry, School of Materials Science and Engineering, National Institute of
Advanced Materials, Nankai University, Tianjin 300350, People's Republic of China
c Corrosion-Erosion and Surface Technology Beijing Key Laboratory, Institute of Advanced
Materials and Technology, University of Science and Technology Beijing, Beijing 100083,
People's Republic of China
d Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072,
1
People's Republic of China
Figure S1. SEM-EDS elemental distribution mapping images of Pt@CdS/3DOM-
SrTiO3(300).
Figure S2. HRTEM and EDS elemental distribution mapping images of Pt/3DOM-
SrTiO3(300) with 2 wt% loading amount of Pt nanoparticles.
2
-0.8 -0.4 0.0 0.4 0.8 1.2 1.60.0
0.5
1.0
1.5
2.0
2.5
C
s-2 (*
107
cm4 /F
2 )
Potential (V vs. RHE)
CdS
3DOM-SrTiO3(300)
(a)
Figure S3. (a) The Mott-Schottky measurements of CdS and 3DOM-SrTiO3(300) in
0.2 M Na2SO4 electrolyte solution. (b) The band structure of CdS and 3DOM-
SrTiO3(300).
Figure S4. SEM image of used Pt@CdS/3DOM-SrTiO3(300) catalysts after 5th
recycle.
3
Table S1. Comparison of photocatalytic hydrogen evolution rate between
Pt@CdS/3DOM-SrTiO3 and ever reported CdS-based catalysts under light irradiation
Photocatalysts Light source(λ: nm)
Catalyst dosage
H2
evolution rate
sacrificial agent Ref.
CdS/Pt/TiO2350W Xe lamp
(λ>415nm) 40 mg 15 mmol/g•h Lactic acid [1]
CdS/Au/TiO2 300W Xe lamp 100 mg 2.28 mmol/g•h
Na2S and Na2SO3
[2]
CdS/Au/WO3300W Xe lamp
(λ>420 nm) 20 mg 1.39 mmol/g•h
Na2S and Na2SO3
[3]
CdS/Pt/ZnO 450W Xe lamp 20 mg 11.2 mmol/g•h
Na2S and Na2SO3
[4]
CdS/Pt/3DOM-SrTiO3 300W Xe lamp 20 mg 57.9 mmol/g•h Lactic acid This
work
Table S2. The loading amount of Pt and CdS in Pt@CdS/3DOM-SrTiO3
photocatalysts.
Sample Pt (wt %) CdS (wt %)
Pt@CdS/3DOM-SrTiO3(200) 0.41 14.2
Pt@CdS/3DOM-SrTiO3(300) 0.44 15.2
Pt@CdS/3DOM-SrTiO3(400) 0.45 15.5
Table S3. The calculated stop-band of 3DOM-SrTiO3 with different pore sizes.
Samples Pore size (nm) Stop-band (nm)
3DOM-SrTiO3(200) 120 264~329
3DOM-SrTiO3(300) 185 407~507
3DOM-SrTiO3(400) 245 533~663
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References:
[1] L. Qi, J. Yu, M. Jaroniec, Preparation and enhanced visible-light photocatalytic H2
production activity of CdS-sensitized Pt/TiO2 nanosheets with exposed (001) facets,
Physical Chemistry Chemical Physics, 13 (2011) 8915-8923.
[2] H. Zhao, M. Wu, J. Liu, Z. Deng, Y. Li, B.-L. Su, Synergistic promotion of solar-
driven H2 generation by three-dimensionally ordered macroporous structured TiO2-
Au-CdS ternary photocatalyst, Applied Catalysis B: Environmental, 184 (2016) 182-
190.
[3] X.L. Yin, J. Liu, W.J. Jiang, X. Zhang, J.S. Hu, L.J. Wan, Urchin-like
Au@CdS/WO3 micro/nano heterostructure as a visible-light driven photocatalyst for
efficient hydrogen generation, Chemical Communications, 51 (2015) 13842-13845.
[4] S.R. Lingampalli, U.K. Gautam, C.N.R. Rao, Highly efficient photocatalytic
hydrogen generation by solution-processed ZnO/Pt/CdS, ZnO/Pt/Cd1-xZnxS and
ZnO/Pt/CdS1-xSex hybrid nanostructures, Energy and Environmental Science, 6 (2013)
3589-3594.
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