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Supplementary information
Visible-light enhanced photocatalytic performance of Polypyrrole/g-C3N4 composites for
water splitting to evolve H2 and pollutants degradation.
Asif Hayat1*, Fazal Raziq2, Muhammad Khan3, Ikram Ullah4, Mati Ur Rahman1, Wasim Ullah Khan5,
Javid Khan5*, Sharafat Ali6
1. College of Chemistry, Fuzhou University, Fuzhou 350100, P. R. China.
2. School of Physics, University of Electronic Science and Technology of China, Chengdu 610054,
PR China
3. School of Material Science and Engineering, Northwestern Polytechnical University Xian,
Shaanxi, P.R. China.
4. National Engineering Research, Center of Chemical Fertilizer Catalyst, College of Chemical
Engineering, Fuzhou University, Fuzhou 350002, P. R. China.
5. School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, P. R. China.
6. Key Laboratory of Functional Inorganic Material Chemistry (Heilongjiang University), Ministry
of Education, School of Chemistry and Materials Science, International Joint Research Center for
Catalytic Technology, Harbin 150080, P. R. China.
*Corresponding Author
[email protected] & [email protected]
Table S1. The specific surface areas (SA), pore volume and size and elemental analysis for g-C3N4 and
PPy/g-C3N4 samples with different mass fractions of PPy.
Sample SBET
m2/g[a]
Pore
volume
cm3/g[a]
Pore
size
nm[a]
N (%) C (%) O (%) C/N
ratio[b]
Band
Gap
(eV)[c]
g-C3N4 54.45 0.38 30.46 61.23 35.05 4.03 0.67 2.87
1%wtppy/g-C3N4 84.31 0.43 23.96 61.74 35.31 3.05 0.68 2.72
1.5%wtppy/g-C3N4 72.12 0.40 26.67 60.55 35.55 3.19 0.68 2.78
2%wtppy/g-C3N4 70.42 0.28 18.04 60.80 35.02 4.29 0.67 2.79
3%wtppy/g-C3N4 48.96 0.25 27.16 62.22 35.01 2.15 0.65 2.81
[a]: From BET calculation
[b]: From elemental analysis measurement
[c]: As similar calculated from reference [1-2].
Table S2.
Entry Sample Region Sacrificial
agent
Co-catalyst Time HER
1 1wt%PPy/g-C3N4 Dark TEOA Pt 1 Hour Not
Detected
2 1wt%PPy/g-C3N4 Visible
(420nm)
TEOA No Pt 1 Hour 17.3umol/h1
3 1wt%PPy/g-C3N4 Visible
(420nm)
No
sacrificial
agent
Pt 1 Hour 34.9umol/h1
4 Pure-PPy Visible
(420nm)
TEOA Pt 1 Hour Not
Determine
Fig. S3. XPS plotted spectra’s of all concern catalysts labeled (inset).
Fig. S4.Powder XRD (A), FT–IR (B) patterns for fresh and used samples of 1wt.PPy/g-C3N4.
Fig. S5. SEM image of pure PPynano-particles
Fig. S6. TEM image of pure g-C3N4
Fig. S7. TEM image of pure PPy nano-particles
Fig. S8. TEM image of PPy/g-C3N4
Fig. S9. Synergic effect of electron donor (A) Acetic Acid (B) Lactic Acid and (C) Methanol on the
photocatalytic activity of PPy/g-C3N4 for HER.
Fig.S10. de-colorization of RhB after interval of time under visible light
References.
1. ur Rahman, M.; Wazir, H. U.; Khan, M.; Nosheen, S.; Rahman, S. U.; Ullah, A., Precursor-
induced template free hydrothermal synthesis of faujasite and its application in catalytic pyrolysis.
Materials Research Express 2017, 4 (5), 055009.
2. Rahman, M. U.; Wei, M.; Xie, F.; Khan, M., Efficient Dye-Sensitized Solar Cells Composed of
Nanostructural ZnO Doped with Ti. Catalysts 2019, 9 (3), 273.