Enhanced photocatalytic removal of hexavalent chromium and organic dye from aqueous solution by hybrid bismuth titanate Bi4Ti3O12/Bi2Ti2O7
- 185 Downloads
Abstract
A hybrid bismuth titanate Bi4Ti3O12/Bi2Ti2O7 obtained via a one-step annealing procedure was employed as photocatalyst to oxidize rhodamine B dyes (RhB) and reduce hexavalent chromium (Cr(VI)). The prepared Bi4Ti3O12/Bi2Ti2O7 was characterized by powder X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and UV–vis diffuse reflectance spectra. The photocatalytic experiments revealed that the hybrid bismuth titanate Bi4Ti3O12/Bi2Ti2O7 subjected to heat treatment at 800 °C (BTO-800) exhibited enhanced photocatalytic activity in the oxidation of RhB dyes as well as the reduction of Cr(VI) relative to Bi4Ti3O12. Meanwhile, the removal efficiency of Cr(VI) in the BTO-800/Cr(VI)/RhB system was significantly higher than that in the RhB/Cr(VI) or BTO-800/Cr(VI) mixtures. The enhanced performance of the ternary system (BTO-800/RhB/Cr(VI)) was attributed to the synergistic effect between dyes and Cr(VI). Moreover, the heterostructure constructed by Bi4Ti3O12 and Bi2Ti2O7 was beneficial for the separation of electrons and holes, further improving the photocatalytic ability. A possible photocatalytic mechanism was also explored.
Keywords
Photocatalyst Bismuth titanate Hexavalent chromium HeterostructureNotes
Acknowledgements
This work was supported by the National Natural Science Foundation of China (51509220) and the Zhejiang Provincial Natural Science Foundation of China (LQ14E090003) and Ningbo Science and Technology Plan Projects (2014C50007).
References
- 1.Y.C. Zhang, J. Li, M. Zhang, D.D. Dionysiou, Environ. Sci. Technol. 45, 9324 (2011)CrossRefGoogle Scholar
- 2.J. Jiang, K. Zhao, X.Y. Xiao, L.Z. Zhang, J. Am. Chem. Soc. 134, 4473 (2012)CrossRefGoogle Scholar
- 3.S. Guo, G.K. Zhang, RSC Adv. 6, 2537 (2016)CrossRefGoogle Scholar
- 4.F.L. Xia, X.Y. Xu, X.C. Li, L. Zhang, L. Zhang, W. Wang, Y. Liu, J.P. Gao, Ind. Eng. Chem. Res. 53, 10576 (2014)CrossRefGoogle Scholar
- 5.J.O. Nriagu, J.M. Pacyna, Nature 333, 134 (1988)CrossRefGoogle Scholar
- 6.M.A. Peraza, F. Ayala-Fierro, D.S. Barber, E. Casarez, L. Rael, Health Perspect 106, 203 (1998)Google Scholar
- 7.G.S. Shukla, R.L. Singhal, J. Physiol. Pharmacol. 62, 1015 (1984)CrossRefGoogle Scholar
- 8.M. Qamar, M.A. Gondal, Z.H. Yamani, J. Mol. Catal. A Chem. 341, 83 (2011)CrossRefGoogle Scholar
- 9.M.R. Prairie, L.R. Evans, B.M. Stange, S.L. Martinez, Environ. Sci. Technol. 27, 1776 (1993)CrossRefGoogle Scholar
- 10.B. Sun, E.P. Reddy, P.G. Smirniotis, Environ. Sci. Technol. 39, 6251 (2005)CrossRefGoogle Scholar
- 11.R.L. Qiu, D.D. Zhang, Z.H. Diao, X.F. Huang, C. He, J.L. Morel, Y. Xiong, Water Res. 46, 2299 (2012)CrossRefGoogle Scholar
- 12.Y.C. Deng, L. Tang, G.M. Zeng, Z.J. Zhu, M. Yan, Y.Y. Zhou, J.J. Wang, Y.N. Liu, J.J. Wang, Appl. Catal. B 203, 343 (2017)CrossRefGoogle Scholar
- 13.L.Y. Hu, J.Y. Wang, J.X. Zhang, Y.Q. Zhan, Z.H. Liu, RSC Adv. 4, 420 (2014)CrossRefGoogle Scholar
- 14.D.Z. Lu, M.C. Yang, P.F. Fang, C.H. Li, L.L. Jiang, Appl. Surf. Sci. 399, 167 (2017)CrossRefGoogle Scholar
- 15.J. Shang, W.C. Hao, X.J. Lv, T.M. Wang, X.L. Wang, Y. Du, S.X. Dou, T.F. Xie, D.J. Wang, J.O. Wang, ACS Catal. 4, 954 (2014)CrossRefGoogle Scholar
- 16.S.J. Peng, L.L. Li, H.T. Tan, Y.Z. Wu, R. Cai, H. Yu, X. Huang, P.N. Zhu, S. Ramakrishna, M. Srinivasan, Q.Y. Yan, J. Mater. Chem. A 1, 7630 (2013)CrossRefGoogle Scholar
- 17.J.G. Hou, R. Cao, Z. Wang, S.Q. Jiao, H.M. Zhu, R.V. Kumar, Appl. Catal. B 104, 399 (2011)CrossRefGoogle Scholar
- 18.X.Q. Zhu, J.L. Zhang, F. Chen, Chemosphere 78, 1350 (2010)CrossRefGoogle Scholar
- 19.H.L. Sun, J. Li, G.K. Zhang, N. Li, J. Mol. Catal. A 424, 311 (2016)CrossRefGoogle Scholar
- 20.W. Zhao, Z. Jia, E. Lei, L.G. Wang, Z.Y. Li, Y.J. Dai, J. Phys. Chem. Solids 74, 1604 (2013)CrossRefGoogle Scholar
- 21.H.F. Cheng, B.B. Huang, Y. Dai, X.Y. Qin, X.Y. Zhang, Z.Y. Wang, M.H. Jiang, J. Solid State Chem. 182, 2274 (2009)CrossRefGoogle Scholar
- 22.W.F. Yao, X.H. Xu, H. Wang, J.T. Zhou, X.N. Yang, Y. Zhang, S.X. Shang, B.B. Huang, Appl. Catal. B 52, 109 (2004)CrossRefGoogle Scholar
- 23.D.F. Hou, W. Luo, Y.H. Huang, J.C. Yu, X.L. Hu, Nanoscale 5, 2028 (2013)CrossRefGoogle Scholar
- 24.D.F. Hou, X.L. Hu, P. Hu, W. Zhang, M.F. Zhang, Y.H. Huang, Nanoscale 5, 9764 (2013)CrossRefGoogle Scholar
- 25.W. Zhao, H.X. Wang, X.N. Feng, W.Y. Jiang, D. Zhao, J.Y. Li, Mater. Res. Bull. 70, 179 (2015)CrossRefGoogle Scholar
- 26.H.F. Shi, H.Q. Tan, W.B. Zhu, Z.C. Sun, Y.J. Ma, E.B. Wang, J. Mater. Chem. A 3, 6586 (2015)CrossRefGoogle Scholar
- 27.X. Lin, P. Lv, Q.F. Guan, H.B. Li, H.J. Zhai, C.B. Liu, Appl. Surf. Sci. 258, 7146 (2012)CrossRefGoogle Scholar
- 28.P. Hao, Z.H. Zhao, J. Tian, Y.H. Sang, G.W. Yu, H. Liu, S.W. Chen, W.J. Zhou, Acta Mater. 62, 258 (2014)CrossRefGoogle Scholar
- 29.P. Zambrano, M.J. Sayagués, J.A. Navío, M.C. Hidalgo, Appl. Surf. Sci. 394, 16 (2017)CrossRefGoogle Scholar
- 30.H.Q. He, J. Yin, Y.X. Li, Y. Zhang, H.S. Qiu, J.B. Xu, T. Xu, C.Y. Wang, Appl. Catal. B 156–157, 35 (2014)CrossRefGoogle Scholar
- 31.J. Wu, F. Duan, Y. Zheng, Y. Xie, J. Phys. Chem. C 111, 12866 (2007)CrossRefGoogle Scholar
- 32.X. Zhang, L. Zhang, J.S. Hu, C.L. Pan, C.M. Hou, Appl. Surf. Sci. 346, 33 (2015)CrossRefGoogle Scholar
- 33.A.R.H.F. Ettema, C. Haas, J. Phys. Condens. Matter 5, 3817 (1993)CrossRefGoogle Scholar
- 34.L. Li, X.D. Huang, J.Q. Zhang, W.Z. Zhang, F.Y. Ma, Z.X. Xiao, S. Gai, D.D. Wang, N. Li, J. Colloid Interface Sci. 443, 13 (2015)CrossRefGoogle Scholar
- 35.P. Kubelka, F. Munk, Z. Tech. Phys. 12, 593 (1931)Google Scholar
- 36.B.K. Das, S.J. Bora, M. Chakrabortty, L. Kalita, R. Chakrabarty, R. Barman, J. Chem. Sci. 118, 487 (2006)CrossRefGoogle Scholar
- 37.Y. Liu, M.Y. Zhang, L. Li, X.T. Zhang, Catal. Commun. 60, 23 (2015)CrossRefGoogle Scholar
- 38.W.F. Yao, H. Wang, X.H. Xu, J.T. Zhou, X.N. Yang, Y. Zhang, S.X. Shang, Appl. Catal. A 259, 29 (2004)CrossRefGoogle Scholar
- 39.D.F. Ollis, Environ. Sci. Technol. 19, 480 (1985)CrossRefGoogle Scholar
- 40.V.N. Montesinos, C. Salou, J.M. Meichtry, C. Colbeau-Justinc, M.I. Litter, Photochem. Photobiol. Sci. 15, 228 (2016)CrossRefGoogle Scholar
- 41.H. Kyung, J. Lee, W. Choi, Environ. Sci. Technol. 39, 2376 (2005)CrossRefGoogle Scholar
- 42.Q.Q. Yu, Z.R. Tang, Y.J. Xu, J. Energy Chem. 23, 564 (2014)CrossRefGoogle Scholar
- 43.C.C. Chen, X.Z. Li, W.H. Ma, J.C. Zhao, J. Phys. Chem. B 106, 318 (2002)CrossRefGoogle Scholar
- 44.W.Y. Lin, C. Wei, K. Rajeshwar, J. Electrochem. Soc. 140, 2477 (1993)CrossRefGoogle Scholar
- 45.Q.P. Wu, J. Zhao, G.H. Qin, C.Y. Wang, X.L. Tong, S. Xue, Appl. Catal. B 142–143, 142 (2013)CrossRefGoogle Scholar
- 46.C. Karunakaran, S. Senthilvelan, S. Karuthapandian, K. Balaraman, Catal. Commun. 5, 283 (2004)CrossRefGoogle Scholar
- 47.W. Wei, Y. Dai, B. Huang, J. Phys. Chem. C 113, 5658 (2009)CrossRefGoogle Scholar
- 48.A.H. Nethercot, Phys. Rev. Lett. 33, 1088 (1974)CrossRefGoogle Scholar
- 49.Y. Kim, S.J. Atherton, E.S. Brigham, T.E. Mallouk, J. Phys. Chem. 97, 11802 (1993)CrossRefGoogle Scholar
- 50.B. Buchholcz, H. Haspel, A. Oszko, A. Kukovecz, Z. Kony, RSC Adv. 7, 16410 (2017)CrossRefGoogle Scholar
- 51.J.J. Testa, M.A. Grela, M.I. Litter, Environ. Sci. Technol. 38, 1589 (2004)CrossRefGoogle Scholar