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

Asifncp11@yahoo.com & javidchemist@yahoo.com

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.

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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.