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Green hydrothermal synthesis of CeO2 NWs–reduced graphene oxide hybrid with enhanced photocatalytic activity

  • K. Huang (a1) (a2), M. Lei (a1) (a2), Y.J. Wang (a2), C. Liang (a2), C.X. Ye (a2), X.S. Zhao (a2), Y.F. Li (a2), R. Zhang (a1) (a2), D.Y. Fan (a2) and Y.G. Wang (a2)...

Abstract

In this study, CeO2 nanowires–reduced graphene oxide hybrids (CeO2 NWs–RGO) were synthesized by a green hydrothermal method using CeO2 NWs and graphene oxide (GO) as raw materials. During the process of reduction of GO, hydrothermal condition with supercritical water provides thermal and chemical factors to synthesize RGO. The photocatalytic experimental results show that the CeO2 NWs–RGO hybrids exhibit enhanced photocatalytic activity for degradation of Rhodamine B (RhB) under UV-light irradiation. It is found that the degree of photocatalytic activity enhancement strongly depends on the mass ratio of RGO in the hybrids, and the remarkable photocatalytic activity is 20 times that of pristine CeO2 NWs when the loading amount of RGO is 8.0 wt%. The enhancement of photocatalytic activity can be attributed to the excellently elevated absorption ability for the dye through ππ conjugation as well as the effective inhibition of the recombination of photogenerated electrons because of the electronic interaction between CeO2 NWs and RGO sheets.

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Corresponding author

a) Author to whom correspondence should be addressed. Electronic mail: mlei@bupt.edu.cn

References

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Ahmad, M., Ahmed, E., Hong, Z. L., Xu, J. F., Khalid, N. R., Elhissi, A., and Ahmed, W. (2013). “A facile one-step approach to synthesizing ZnO/graphene composites for enhanced degradation of methylene blue under wisible light,” Appl. Surf. Sci. 274, 273281.
Corma, A., Atienzar, P., Garcia, H., and Chane-Ching, J. Y. (2004). “Hierarchically mesostructured doped CeO2 with potential for Solar-Cell use,” Nat. Mater. 3, 394397.
Deluga, G. A., Salge, J. R., Schmidt, L. D., and Verykios, X. E. (2004). “Renewable hydrogen from ethanol by autothermal reforming,” Science 303, 993997.
Fu, X. Q., Wang, C., Yu, H. C., Wang, Y. G., and Wang, T. H. (2007). “Fast humidity sensors based on CeO2 nanowires,” Nanotechnology 18, 145503.
Ji, P. F., Zhang, J. L., Chen, F., and Anpo, M. (2009). “Study of adsorption and degradation of acid Orange 7 on the surface of CeO2 under visible light irradiation,” Appl. Catal. B, Environ. 85, 148154.
Kamat, P. V. (2010). “Graphene-based nanoarchitectures. Anchoring semiconductor and metal nanoparticles on a two-dimensional carbon support,” J. Phys. Chem. Lett. 1, 520527.
Khalil, L. B., Mourad, W. E., and Rophael, M. W. (1998). “Photo-catalytic reduction of environmental pollutant Cr (VI) over some semiconductors under UV/visible light Illumination,” Appl. Catal. B, Environ. 17, 267273.
Kim, S. R., Parvez, M. K., and Chhowalla, M. (2009). “UV-reduction of graphene oxide and its application as an interfacial layer to reduce the black-transport reactions in dye-sensitized solar cells,” Chem. Phys. Lett. 483, 124127.
Lee, D. H., Kim, J. E., Han, T. H., Hwang, J. W., Jeon, S., Choi, S. Y., Hong, S. H., Lee, W. J., Ruoff, R. S., and Kim, S. O. (2010). “Versatile carbon hybrid films composed of vertical carbon nanotubes grown on mechanically compliant graphene films,” Adv. Mater. 22, 12471252.
Lee, J. S., You, K. H., and Park, C. B. (2012). “Low bandgap TiO2 nanoparticles wrapped by graphene,” Adv. Mater. 24, 10841088.
Li, Q., Guo, B. D., Yu, J. G., Ran, J. R., Zhang, B. H., Yan, H. J., and Gong, J. R. (2011). “Highly efficient visible-light-driven photocatalytic hydrogen production of CdS-cluster-decorated graphene nanosheets,” J. Am. Chem. Soc. 133, 1087810884.
Liao, L., Mai, H. X., Yuan, Q., Lu, H. B., Li, J. C., Liu, C., Yan, C. H., Shen, Z. X., and Yu, T. (2008). “Single CeO2 nanowire gas sensor supported with Pt nanocrystals: gas sensitivity, surface bond states, and chemical mechanism,” J. Phys. Chem. C 112, 90619065.
Ling, Q., Yang, M., Rao, R. C., Yang, H. X., Zhang, Q. Y., Liu, H. D., and Zhang, A. M. (2013). “Simple synthesis of layered CeO2-graphene hybrid and their superior catalytic performance in dehydrogenation of ethylbenzene,” Appl. Surf. Sci. 274, 131137.
Mauro, F. P. S., Heloisa, C. J. F. C., Eduardo, R. T., Mario, J. P., and Paulo, C. I. (2012). “Synthesisand characterization of CeO2-graphene composite,” J. Therm. Anal. Calorim. 107, 257263.
Miyauchi, M., Nakajima, A., Watanabe, T., and Hashi-moto, K. (2002). “Photocatalysis and photoinduced hydrophilicity of various metal oxide thin films,” Chem. Mater. 14, 28122816.
Nguyen-Phan, T., Pham, V. H., Kweon, H., Chung, J. S., Kim, E. J., Hur, S. H., and Shin, E. W. (2012). “Uniform distribution of TiO2 nanocrystals on reduced graphene oxide sheets by the chelating ligands,” J. Colloid Interface Sci. 367, 139147.
Pant, H. R., Park, C. H., Pokharel, P., Tijing, L. D., Lee, D. S., and Kim, C. S. (2013). “ZnO micro-flowers assembled on reduced graphene sheets with high photocatalytic activity for removal of pollutants,” Power today 235, 853858.
Perera, S. D., Mariano, R. G., Vu, K., Nour, N., Seitz, O., Chabal, Y., and Balkus, K. J. Jr. (2012). “Hydrothermal synthesis of graphene-TiO2 nanotube composites with enhanced photocatalytic actibity,” ACS Catal. 2, 949956.
Si, Y. and Samulski, E. T. (2008). “Exfoliated graphene separated by platinum nanoparticles,” Chem. Mater. 20, 67926797.
Subramanian, V., Wolf, E., and Kamat, P. V. (2001). “Semiconductor-metal composite nanostructures. to what extent do metal nanoparticles improve the photocatalytic activity of TiO2 Films,” J. Phys. Chem. B 105, 1143911446.
Sun, X. M., and Li, Y. D. (2004). “Colloidal carbon spheres and their core/shell structures with noble-metal nanoparticles,” Angew. Chem. Int. Edit. 43, 597601.
Wang, F. and Zhang, K. (2011). “Reduced graphene oxide-TiO2 nanocomposite with high photocatalystic activity for the degradation of rhodamine B,” J. Mol. Catal. A, Chem. 345, 101107.
Wang, H., Robinson, J. T., Diankov, G., and Dai, H. (2010). “Nanocrystal growth on graphene with various degrees of oxidation,” J. Am. Chem. Soc. 132, 32703271.
Wang, Z. L., Li, G. R., Ou, Y. L., Feng, Z. P., Qu, D. L., and Tong, Y. X. (2011). “Electrochemical deposition of Eu3+-doped CeO2 nanobelts with enhanced optical properties,” J. Phys. Chem. C 115, 351356.
Wang, W. G., Yu, J. G., Xiang, Q. J., and Cheng, B. (2012). “Enhanced photocatalytic activity of hierarchical macro/mesoporous TiO2-graphene composites for photodegradation of acetone in air,” Appl. Catal. B, Environ. 119, 109116.
Xu, Y., Bai, H., Lu, G. W., Li, C., and Shi, G. Q. (2008). “Flexible graphene films via the filtration of water-soluble noncovalent functionalized graphene sheets,” J. Am. Chem. Soc. 130, 58565857.
Xu, T. G., Zhang, L. W., Chen, H. Y., and Zhu, Y. F. (2011). “Significantly enhanced photocatlytic performance of ZnO via graphene hybridization and the mechanism study,” Appl. Catal. B, Environ. 101, 382387.
Yao, C. H., Shin, Y. S., Wang, L. Q., Windisch, C. F. Jr., Samuels, W. D., Arey, B. W., Wang, C. M., Risen, W. M. Jr., and Exarhos, G. J. (2007). “Hydrothermal dehydration of aqueous fructose solutions in a closed system,” J. Phys. Chem. C 111, 1514115145.
Zhang, H., Lv, X. J., Li, Y. M., Wang, Y., and Li, J. H. (2010). “P25-graphene composite as a high performance photocatalyst,” ACS Nano 4, 380386.
Zhang, M. H., Yuan, R., Chai, Y. Q., Wang, C., and Wu, X. P. (2013). “Cerium oxide–grapheme as the matrix for cholesterol sensor,” Anal. Biochem. 436, 6974.
Zhong, L. S., Hu, J. S., Cao, A. M., Liu, Q., Song, W. G., and Wan, L. J. (2007). “3D flowerlike ceria micro/nanocomposite structure and its application for water treatment and CO removal,” Chem. Mater. 19, 16481655.
Zhou, X., Shi, T. J., and Zhou, H. O. (2012). “Hydrothermal preparation of ZnO-reduced graphene oxide hybrid with high performance in photocatalytic degradation,” Appl. Surf. Sci. 258, 62046211.

Keywords

Green hydrothermal synthesis of CeO2 NWs–reduced graphene oxide hybrid with enhanced photocatalytic activity

  • K. Huang (a1) (a2), M. Lei (a1) (a2), Y.J. Wang (a2), C. Liang (a2), C.X. Ye (a2), X.S. Zhao (a2), Y.F. Li (a2), R. Zhang (a1) (a2), D.Y. Fan (a2) and Y.G. Wang (a2)...

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