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A C3N4/Bi2WO6 organic–inorganic hybrid photocatalyst with a high visible-light-driven photocatalytic activity

Published online by Cambridge University Press:  03 March 2016

Meng Wang ,
Minghao Fang ,
Chao Tang ,
Lina Zhang ,
Zhaohui Huang ,
Yan'gai Liu  and
Xiaowen Wu
Meng Wang
Affiliation:
Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China
Minghao Fang*
Affiliation:
Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China
Chao Tang
Affiliation:
Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China
Lina Zhang
Affiliation:
Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China
Zhaohui Huang*
Affiliation:
Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China
Yan'gai Liu
Affiliation:
Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China
Xiaowen Wu
Affiliation:
Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China
*
a)Address all correspondence to these authors. e-mail: [email protected]
b)e-mail: [email protected]
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Abstract

C3N4/Bi2WO6 heterojunction photocatalysts were successfully synthesized using consecutive hydrothermal and calcination processes. These photocatalysts were characterized using x-ray diffraction, scanning electron microscopy, transmission electron microscopy, ultraviolet-visible diffuse reflectance spectroscopy, x-ray photoelectron spectroscopy, and photoluminescence measurements. The results of these measurements indicated that the Bi2WO6 nanoparticles were approximately 30–50 nm and uniformly distributed on the surface of C3N4 lamellar structures. The 20% C3N4/Bi2WO6 displayed enhanced visible-light absorption from 432 nm to 468 nm. Photocatalytic tests also revealed that the 20% C3N4/Bi2WO6 photocatalyst exhibited significantly enhanced photocatalytic activity compared to that of pure C3N4 and Bi2WO6 under irradiation by visible light (λ > 420 nm). Furthermore, the excellent photocatalytic efficiency of the 20% C3N4/Bi2WO6 photocatalyst was determined to be related to the formation of C3N4/Bi2WO6 heterojunctions, and their presence was found to be generally beneficial for the separation of photogenerated electron–hole pairs.

Keywords

photocatalystheterojunctionC3N4Bi2WO6
Type
Articles
Information
Journal of Materials Research , Volume 31 , Issue 6 , 28 March 2016 , pp. 713 - 720
Copyright
Copyright © Materials Research Society 2016 

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References

REFERENCES

Chen, D., Wang, K., Hong, W., Zong, R., Yao, W., and Zhu, Y.: Visible light photoactivity enhancement via CuTCPP hybridized g-C3N4 nanocomposite. Appl. Catal., B 166, 366–373 (2015).CrossRefGoogle Scholar
Zhu, S., Xu, T., Fu, H., Zhao, J., and Zhu, Y.: Synergetic effect of Bi2WO6 photocatalyst with C60 and enhanced photoactivity under visible irradiation. Environ. Sci. Technol. 41(17), 6234–6239 (2007).Google Scholar
Wang, Y., Bai, X., Pan, C., He, J., and Zhu, Y.: Enhancement of photocatalytic activity of Bi2WO6 hybridized with graphite-like C3N4. J. Mater. Chem. 22(23), 11568–11573 (2012).Google Scholar
Chen, S., Hu, Y., Jiang, X., Meng, S., and Fu, X.: Fabrication and characterization of novel Z-scheme photocatalyst WO3/g-C3N4 with high efficient visible light photocatalytic activity. Mater. Chem. Phys. 149, 512–521 (2015).CrossRefGoogle Scholar
Tian, N., Huang, H., Guo, Y., He, Y., and Zhang, Y.: A g-C3N4/Bi2O2CO3 composite with high visible-light-driven photocatalytic activity for rhodamine B degradation. Appl. Surf. Sci. 322, 249–254 (2014).Google Scholar
Zhang, L., Wang, H., Chen, Z., Wong, P.K., and Liu, J.: Bi2WO6 micro/nano-structures: Synthesis, modifications and visible-light-driven photocatalytic applications. Appl. Catal., B 106(1), 1–13 (2011).Google Scholar
Wu, L., Bi, J., Li, Z., Wang, X., and Fu, X.: Rapid preparation of Bi2WO6 photocatalyst with nanosheet morphology via microwave-assisted solvothermal synthesis. Catal. Today 131(1), 15–20 (2008).Google Scholar
Bai, X., Sun, C., Wu, S., and Zhu, Y.: Enhancement of photocatalytic performance via a P3HT-g-C3N4 heterojunction. J. Mater. Chem. A 3(6), 2741–2747 (2015).CrossRefGoogle Scholar
Tian, N., Huang, H., Zhang, Y., and He, Y.: Enhanced photocatalytic activities on Bi2O2CO3/ZnWO4 nanocomposites. J. Mater. Res. 29(05), 641–648 (2014).Google Scholar
Fu, H., Zhang, L., Yao, W., and Zhu, Y.: Photocatalytic properties of nanosized Bi2WO6 catalysts synthesized via a hydrothermal process. Appl. Catal., B 66(1), 100–110 (2006).CrossRefGoogle Scholar
Wang, M., Qiao, Z., Fang, M., Huang, Z., Liu, Y.G., Wu, X., Tang, C., Tang, H., and Zhu, H.: Synthesis of Er-doped Bi2WO6 and enhancement in photocatalytic activity induced by visible light. RSC Adv. 5(115), 94887–94894 (2015).Google Scholar
Tian, N., Huang, H., He, Y., Guo, Y., Zhang, T., and Zhang, Y.: Mediator-free direct Z-scheme photocatalytic system: BiVO4/g-C3N4 organic–inorganic hybrid photocatalyst with highly efficient visible-light-induced photocatalytic activity. Dalton Trans. 44(9), 4297–4307 (2015).Google Scholar
Chai, B., Zou, F., and Chen, W.: Facile synthesis of Ag3PO4/C3N4 composites with improved visible light photocatalytic activity. J. Mater. Res. 30(08), 1128–1136 (2015).CrossRefGoogle Scholar
Tian, N., Huang, H., He, Y., Guo, Y., and Zhang, Y.: Organic–inorganic hybrid photocatalyst g-C3N4/Ag2CO3 with highly efficient visible-light-active photocatalytic activity. Colloids Surf., A 467, 188–194 (2015).Google Scholar
Li, Y., Wu, S., Huang, L., Xu, H., Zhang, R., Qu, M., Gao, Q., and Li, H.: g-C3N4 modified Bi2O3 composites with enhanced visible-light photocatalytic activity. J. Phys. Chem. Solids 76, 112–119 (2015).Google Scholar
Wu, S.Z., Li, K., and Zhang, W.D.: On the heterostructured photocatalysts Ag3VO4/g-C3N4 with enhanced visible light photocatalytic activity. Appl. Surf. Sci. 324, 324–331 (2015).CrossRefGoogle Scholar
Fu, J., Chang, B., Tian, Y., Xi, F., and Dong, X.: Novel C3N4–CdS composite photocatalysts with organic–inorganic heterojunctions: In situ synthesis, exceptional activity, high stability and photocatalytic mechanism. J. Mater. Chem. A 1(9), 3083–3090 (2013).Google Scholar
Ke, Y., Guo, H., Wang, D., Chen, J., and Weng, W.: ZrO2/g-C3N4 with enhanced photocatalytic degradation of methylene blue under visible light irradiation. J. Mater. Res. 29(20), 2473–2482 (2014).Google Scholar
Jiang, D., Chen, L., Zhu, J., Chen, M., Shi, W., and Xie, J.: Novel p–n heterojunction photocatalyst constructed by porous graphite-like C3N4 and nanostructured BiOI: Facile synthesis and enhanced photocatalytic activity. Dalton Trans. 42(44), 15726–15734 (2013).CrossRefGoogle ScholarPubMed
Zhang, L., Wong, K.H., Chen, Z., Jimmy, C.Y., Zhao, J., Hu, C., Chan, C.Y., and Wong, P.K.: AgBr-Ag-Bi2WO6 nanojunction system: A novel and efficient photocatalyst with double visible-light active components. Appl. Catal., A 363(1), 221–229 (2009).Google Scholar
Fu, H., Pan, C., Zhang, L., and Zhu, Y.: Synthesis, characterization and photocatalytic properties of nanosized Bi2WO6, PbWO4 and ZnWO4 catalysts. Mater. Res. Bull. 42(4), 696–706 (2007).Google Scholar
Xu, J., Ao, Y., and Chen, M.: A simple method for the preparation of Bi2WO6-reduced graphene oxide with enhanced photocatalytic activity under visible light irradiation. Mater. Lett. 92, 126–128 (2013).Google Scholar
Ma, D.K., Zhou, S.M., Hu, X., Jiang, Q.R., and Huang, S.M.: Hierarchical BiOI and hollow Bi2WO6 microspheres: Topochemical conversion and photocatalytic activities. Mater. Chem. Phys. 140(1), 11–15 (2013).Google Scholar