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,

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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.

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-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.

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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:

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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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