Abstract
Hydrogen production from water splitting via photocatalytic reactions can be an alternative clean energy of fossil fuels in the future. Graphitic carbon nitride (g-C3N4) is one of the active photocatalysts in the visible light region that can be combined with other semiconductors in order to increase its photocatalytic efficiency. TiO2 is one of the most appropriate choices to combine with g-C3N4 because of its conduction band edge and variety forms of nanostructures. In this work, nanosheets of g-C3N4 were mixed with the nanoparticles of titanate in order to enhance charge separation and photocatalytic efficiency. Consequently, the hydrogen evolution of this novel nanocomposite produced almost double hydrogen in comparison with g-C3N4.
References
1. Cao, S., Yu J., 2014. g-C3N4-based photocatalysts for hydrogen generation. The Journal of Physical Chemistry Letters 5, 2101–2107.10.1021/jz500546bSearch in Google Scholar PubMed
2. Cao, S., Low J., Yu J., Jaroniec M., 2015. Polymeric photocatalysts based on graphitic carbon nitride. Advanced Materials, 27, 2150–76.10.1002/adma.201500033Search in Google Scholar PubMed
3. Cao, S.-W., Yuan Y.-P., Barber J., Loo S.C.J., Xue C., 2014. Noble-metal-free g-C3N4/Ni(dmgH)2 composite for efficient photocatalytic hydrogen evolution under visible light irradiation. Applied Surface Science 319, 344–349.10.1016/j.apsusc.2014.04.094Search in Google Scholar
4. Chai, B., Peng T., Mao J., Li K., Zan L., 2012. Graphitic carbon nitride (g-C3N4)-Pt-TiO2 nanocomposite as an efficient photocatalyst for hydrogen production under visible light irradiation. Physical Chemistry Chemical Physics 14, 16745–16752.10.1039/c2cp42484cSearch in Google Scholar PubMed
5. Chen, S., Wang C., Bunes B. R., Li Y., Wang C., Zang L., 2015. Enhancement of visible-light-driven photocatalytic H2 evolution from water over g-C3N4 through combination with perylene diimide aggregates. Applied Catalysis A: General 498, 63–68.10.1016/j.apcata.2015.03.026Search in Google Scholar
6. Chen X., Shen S., Guo L., Mao S. S., 2010. Semiconductor-based photocatalytic hydrogen generation. Chemical Reviews 110, 6503–6570.10.1021/cr1001645Search in Google Scholar PubMed
7. Chu, S., Wang C., Feng J., Wang Y., Zou Z., 2014. Melem: A metal-free unit for photocatalytic hydrogen evolution. International Journal of Hydrogen Energy 39, 13519–13526.10.1016/j.ijhydene.2014.02.052Search in Google Scholar
8. Dinh, C.-T., Seo Y., Nguyen T.-D., Kleitz F., Do T.-O., 2012. Controlled synthesis of titanate nanodisks as versatile building blocks for the design of hybrid nanostructures. Angewandte Chemie International Edition 51, 6608–6612.10.1002/anie.201202046Search in Google Scholar PubMed
9. Dinh, C.-T., Pham M.-H., Kleitz F., Do T.-O., 2013. Design of water-soluble CdS-titanate-nickel nanocomposites for photocatalytic hydrogen production under sunlight. Journal of Materials Chemistry A 1, 13308–13313.10.1039/c3ta12914dSearch in Google Scholar
10. Dong, F., Wu L., Sun Y., Fu M., Wu Z., Lee S.C., 2011. Efficient synthesis of polymeric g-C3N4 layered materials as novel efficient visible light driven photocatalysts. Journal of Materials Chemistry 21, 15171–15174.10.1039/c1jm12844bSearch in Google Scholar
11. Dong, G., Zhang Y., Pan Q., Qiu J., 2014. A fantastic graphitic carbon nitride (g-C3N4) material: Electronic structure, photocatalytic and photoelectronic properties. Journal of Photochemistry and Photobiology C: Photochemistry Reviews 20, 33–50.10.1016/j.jphotochemrev.2014.04.002Search in Google Scholar
12. Fan, W., Zhang Q., Wang Y., 2013. Semiconductor-based nanocomposites for photocatalytic H2 production and CO2 conversion. Physical Chemistry Chemical Physics 15, 2632–2649.10.1039/c2cp43524aSearch in Google Scholar PubMed
13. Fujishima, A., Honda K., 1972. Electrochemical photolysis of water at a semiconductor electrode. Nature 238, 37–38.10.1038/238037a0Search in Google Scholar PubMed
14. Ge, L., Han C., Liu J., 2012. In situ synthesis and enhanced visible light photocatalytic activities of novel PANI-g-C3N4 composite photocatalysts. Journal of Materials Chemistry 22, 11843–11850.10.1039/c2jm16241eSearch in Google Scholar
15. Gholipour, M.R., Dinh C.-T., Beland F., Do T.-O., 2015. Nanocomposite heterojunctions as sunlight-driven photocatalysts for hydrogen production from water splitting. Nanoscale 7, 8187–8208.10.1039/C4NR07224CSearch in Google Scholar
16. Hong, J., Xia X., Wang Y., Xu R., 2012. Mesoporous carbon nitride with in situ sulfur doping for enhanced photocatalytic hydrogen evolution from water under visible light. Journal of Materials Chemistry 22, 15006–15012.10.1039/c2jm32053cSearch in Google Scholar
17. Lewis, N.S., Nocera D.G., 2006. Powering the planet: Chemical challenges in solar energy utilization. Proceedings of the National Academy of Sciences 103, 15729–15735.10.1073/pnas.0603395103Search in Google Scholar PubMed PubMed Central
18. Li, Y., Zhang, J., Wang, Q., Jin Y., Huang D., Cui Q., Zou G., 2010. Nitrogen-rich carbon nitride hollow vessels: synthesis, characterization, and their properties. The Journal of Physical Chemistry B 114, 9429–9434.10.1021/jp103729cSearch in Google Scholar PubMed
19. Lin, Q., Li L., Liang S., Liu M., Bi J., Wu L., 2015. Efficient synthesis of monolayer carbon nitride 2D nanosheet with tunable concentration and enhanced visible-light photocatalytic activities. Applied Catalysis B: Environmental 163, 135–142.10.1016/j.apcatb.2014.07.053Search in Google Scholar
20. Liu, L., Qi Y., Hu J., Liang Y., Cui W., 2015. Efficient visible-light photocatalytic hydrogen evolution and enhanced photostability of Cu2O@g-C3N4 octahedra. Applied Surface Science 351, 1146–1154.10.1016/j.apsusc.2015.06.119Search in Google Scholar
21. Lu, X., Xu K., Chen P., Jia K., Liu S., Wu C., 2014. Facile one step method realizing scalable production of g-C3N4 nanosheets and study of their photocatalytic H2 evolution activity. Journal of Materials Chemistry A 2, 18924–18928.10.1039/C4TA04487HSearch in Google Scholar
22. Martha, S., Nashim A., Parida K.M., 2013. Facile synthesis of highly active g-C3N4 for efficient hydrogen production under visible light. Journal of Materials Chemistry A, 1, 7816–7824.10.1039/c3ta10851aSearch in Google Scholar
23. Miranda, C., Mansilla H., Yáñez J., Obregón S., Colón G., 2013. Improved photocatalytic activity of g-C3N4/TiO2 composites prepared by a simple impregnation method. Journal of Photochemistry and Photobiology A: Chemistry 253, 16–21.10.1016/j.jphotochem.2012.12.014Search in Google Scholar
24. Obregón, S., Colón G., 2014. Improved H2 production of Pt-TiO2/g-C3N4-MnOx composites by an efficient handling of photogenerated charge pairs. Applied Catalysis B: Environmental 144, 775–782.10.1016/j.apcatb.2013.07.034Search in Google Scholar
25. Shen, S., Shi J., Guo P., Guo L., 2011. Visible-light-driven photocatalytic water splitting on nanostructured semiconducting materials. International Journal of Nanotechnology 8, 523–591.10.1504/IJNT.2011.040192Search in Google Scholar
26. Tachibana, Y., Vayssieres L., Durrant J.R., 2012. Artificial photosynthesis for solar water-splitting. Nature Photonics 6, 511–518.10.1038/nphoton.2012.175Search in Google Scholar
27. Tong, Z., Yang D., Xiao T., Tian Y., Jiang Z., 2015. Biomimetic fabrication of g-C3N4/TiO2 nanosheets with enhanced photocatalytic activity toward organic pollutant degradation. Chemical Engineering Journal 260, 117–125.10.1016/j.cej.2014.08.072Search in Google Scholar
28. Wang, X., Blechert S., Antonietti M., 2012. Polymeric graphitic carbon nitride for heterogeneous photocatalysis. Acs Catalysis 2, 1596–1606.10.1021/cs300240xSearch in Google Scholar
29. Wang, X., Maeda K., Thomas A., Takanabe K., Xin G., Carlsson J. M., Domen K., Antonietti M., 2009. A metal-free polymeric photocatalyst for hydrogen production from water under visible light. Nat Mater 8, 76–80.10.1142/9789814317665_0039Search in Google Scholar
30. Wang, X., Chen J., Guan X., Guo L., 2015. Enhanced efficiency and stability for visible light driven water splitting hydrogen production over Cd0.5Zn0.5S/g-C3N4 composite photocatalyst. International Journal of Hydrogen Energy 40, 7546–7552.10.1016/j.ijhydene.2014.11.055Search in Google Scholar
31. Wang, X.-j., Yang W.-y., Li F.-t., Xue Y.-b., Liu R.-h., Hao Y.-j., 2013. In situ microwave-assisted synthesis of porous N-TiO2/g-C3N4 heterojunctions with enhanced visible-light photocatalytic properties. Industrial & Engineering Chemistry Research 52, 17140–17150.10.1021/ie402820vSearch in Google Scholar
32. Xiang, Q., Yu J., Jaroniec M., 2011. Preparation and enhanced visible-light photocatalytic H2-production activity of graphene/C3N4 composites. The Journal of Physical Chemistry C 115, 7355–7363.10.1021/jp200953kSearch in Google Scholar
33. Yang, S., Gong Y., Zhang J., Zhan L., Ma L., Fang Z., Vajtai R., Wang X., Ajayan P.M., 2013. Exfoliated graphitic carbon nitride nanosheets as efficient catalysts for hydrogen evolution under visible light. Advanced Materials 25, 2452–2456.10.1002/adma.201204453Search in Google Scholar PubMed
34. Yu, J., Wang S., Low J., Xiao W., 2013. Enhanced photocatalytic performance of direct Z-scheme g-C3N4-TiO2 photocatalysts for the decomposition of formaldehyde in air. Physical Chemistry Chemical Physics 15, 16883–16890.10.1039/c3cp53131gSearch in Google Scholar PubMed
35. Yu, J., Wang S., Cheng B., Lin Z., Huang F., 2013. Noble metal-free Ni(OH)2–g-C3N4 composite photocatalyst with enhanced visible-light photocatalytic H2-production activity. Catalysis Science & Technology 3, 1782.10.1039/c3cy20878hSearch in Google Scholar
36. Zhao, Z., Sun Y., Dong F., 2015. Graphitic carbon nitride based nanocomposites: a review. Nanoscale 7, 15–37.10.1039/C4NR03008GSearch in Google Scholar PubMed
37. Zhu, B., Xia P., Ho W., Yu J., 2015. Isoelectric point and adsorption activity of porous g-C3N4. Applied Surface Science 344, 188–195.10.1016/j.apsusc.2015.03.086Search in Google Scholar
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