Abstract
We compared the enhancement of photoactivity of transition metal ion (1 mol% Fe, Cu, Mn, and Zn) doped CeO2 nanocatalysts, and examined the effects of oxygen vacancies and the valence of the doped ions. The nanocatalysts were synthesized using a coprecipitation method and were characterized by x-ray diffraction, scanning electron microscopy, transmission electron microscopy, Brunauer–Emmett–Teller isotherm methods and Raman spectroscopy. The photocatalytic activities of these catalysts were tested using aqueous Rhodamine B (RhB) degradation under UV irradiation. The spherical CeO2 nanocatalysts had a mesoporous structure and ∼15 nm average particle size. The catalytic activity was closely related to the oxygen vacancies and the valence of the doped ions. An increase in oxygen vacancies of doped CeO2 decreased the photocatalytic activity. The photocatalytic activities of the catalysts decreased in the order: 1 mol% Fe > Cu > Mn > Zn > undoped CeO2. The 1 mol% Fe doped CeO2 degraded ∼92.6% of the RhB after 3 h of irradiation, and the degradation obeyed pseudo-first-order kinetics. Liquid chromatography–mass spectrometry indicated that the photodegradation of RhB was a stepwise oxidation process. Under continuous oxidation, over a long reaction time, the RhB was completely oxidized to its final products, such as water and carbon dioxide.
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M.P. Gao, Z.Q. Zeng, B.C. Sun, H.K. Zou, J.F. Chen, and L. Shao: Ozonation of azo dye Acid Red 14 in a microporous tube-in-tube microchannel reactor: Decolorization and mechanism. Chemosphere 89, 190 (2012).
L.C. Lei, Q.Z. Dai, M.H. Zhou, and X.W. Zhang: Decolorization of cationic red X-GRL by wet air oxidation: Performance optimization and degradation mechanism. Chemosphere 68, 1135 (2007).
L.J. Li, F.Q. Liu, X.S. Jing, P.P. Ling, and A. Li: Displacement mechanism of binary competitive adsorption for aqueous divalent metal ions onto a novel IDA-chelating resin: Isotherm and kinetic modeling. Water Res. 45, 1177 (2011).
M.H. El-Naas, S.A. Al-Muhtaseb, and S. Makhlouf: Biodegradation of phenol by Pseudomonas putida immobilized in polyvinyl alcohol (PVA) gel. J. Hazard. Mater. 164, 720 (2009).
B. Palanisamy, C.M. Babu, B. Sundaravel, S. Anandan, and V. Murugesan: Sol–gel synthesis of mesoporous mixed Fe2O3/TiO2 photocatalyst: Application for degradation of 4-chlorophenol. J. Hazard. Mater. 252–253, 233 (2013).
E.G. Garrido-Ramírez, B.K.G. Theng, and M.L. Mora: Clays and oxide minerals as catalysts and nanocatalysts in Fenton-like reactions—A review. Appl. Clay Sci. 47, 182 (2010).
A. Szygula, E. Guibal, M.A. Palacín, M. Ruiz, and A.M. Sastre: Removal of an anionic dye (Acid Blue 92) by coagulation–flocculation using chitosan. J. Environ. Manage. 90, 2979 (2009).
T.A. Saleh and V.K. Gupta: Photo-catalyzed degradation of hazardous dye methyl orange by use of a composite catalyst consisting of multi-walled carbon nanotubes and titanium dioxide. J. Colloid Interface Sci. 371, 101 (2012).
C.X. Lu, P. Yan, J.Z. Wang, A.M. Liu, D. Song, and C. Jiang: Photoinduced degradation of organic solar cells with different microstructure. Chin. Phys. B 23, 8803 (2014).
X.B. Chen, L. Liu, and F. Huang: Black titanium dioxide (TiO2) nanomaterials. Chem. Soc. Rev. 44, 1861 (2015).
T. Xia, P. Wallenmeyer, A. Anderson, J. Murowchick, L. Liu, and X.B. Chen: Hydrogenated black ZnO nanoparticles with enhanced photocatalytic performance. RSC Adv. 4, 41654 (2014).
L. Liu and X.B. Chen: Titanium dioxide nanomaterials: Self-structural modifications. Chem. Rev. 114, 9890 (2014).
J. Li, D. Luo, C. Yang, S. He, S.C. Chen, J.W. Lin, L. Zhu, and X. Li: Copper(II) imidazolate frameworks as highly efficient photocatalysts for reduction of CO2 into methanol under visible light irradiation. J. Solid State Chem. 203, 154 (2013).
W.J. Zhou, G.J. Du, P.G. Hu, Y.Q. Yin, J.H. Li, J.H. Yu, G.C. Wang, J.X. Wang, H. Liu, J.Y. Wang, and H. Zhang: Nanopaper based on Ag/TiO2 nanobelts heterostructure for continuous-flow photocatalytic treatment of liquid and gas phase pollutants. J. Hazard. Mater. 197, 19 (2011).
P. Gao, A. Li, D.D. Sun, and W.J. Ng: Effects of various TiO2 nanostructures and graphene oxide on photocatalytic activity of TiO2. J. Hazard. Mater. 279, 96 (2014).
C.Y. Deng, G.L. Zhang, B. Zou, H.L. Shi, Y.J. Liang, Y.C. Li, J.X. Fu, and W.Z. Wang: TiO2/Ag composite nanowires for a recyclable surface enhanced Raman scattering substrate. Chin. Phys. B 22, 106102 (2013).
X.F. Sun, C.P. Wei, and Q.Y. Li: Preparation and characterization of Ag–Au alloys/SiO2 composite thin films. Chin. Phys. Soc. 58, 5816 (2009).
N.M. Mahmoodi: Photocatalytic ozonation of dyes using copper ferrite nanoparticle prepared by co-precipitation method. Desalination 279, 332 (2011).
S.S. Fu, H.L. Niu, Z.Y. Tao, J.M. Song, C.J. Mao, S.Y. Zhang, C.L. Chen, and D. Wang: Low temperature synthesis and photocatalytic property of perovskite-type LaCoO3 hollow spheres. J. Alloys Compd. 576, 5 (2013).
L.M. Song and S.J. Zhang: A simple mechanical mixing method for preparation of visible-light-sensitive NiO–CaO composite photocatalysts with high photocatalytic activity. J. Hazard. Mater. 174, 563 (2010).
T. Miwa, S. Kaneco, H. Katsumata, T. Suzuki, K. Ohta, S.C. Verma, and K. Sugihara: Photocatalytic hydrogen production from aqueous methanol solution with CuO/Al2O3/TiO2 nanocomposite. Int. J. Hydrogen Energy 35, 6554 (2010).
S. Ameen, M.S. Akhtar, H.K. Seo, and H.S. Shin: Solution-processed CeO2/TiO2 nanocomposite as potent visible light photocatalyst for the degradation of bromophenol dye. Chem. Eng. J. 247, 193 (2014).
D. Channei, B. Inceesungvorn, N. Wetchakun, S. Phanichphant, A. Nakaruk, P. Koshy, and C.C. Sorrell: Photocatalytic activity under visible light of Fe-doped CeO2 nanoparticles synthesized by flame spray pyrolysis. Ceram. Int. 39, 3129 (2013).
M.H. Li, S.J. Zhang, L. Lv, M.S. Wang, W.M. Zhang, and B.C. Pan: A thermally stable mesoporous ZrO2–CeO2–TiO2 visible light photocatalyst. Chem. Eng. J. 229, 118 (2013).
S.C. Hu, F. Zhou, L.Z. Wang, and J.L. Zhang: Preparation of Cu2O/CeO2 heterojunction photocatalyst for the degradation of Acid Orange 7 under visible light irradiation. Catal. Commun. 12, 794 (2011).
C.Q. Hu, Q.S. Zhu, Z. Jiang, L. Chen, and R.F. Wu: Catalytic combustion of dilute acetone over Cu-doped ceria catalysts. Chem. Eng. J. 152, 583 (2009).
C.H. Xia, C.G. Hu, P. Chen, B.Y. Wan, X.S. He, and Y.S. Tian: Magnetic properties and photoabsorption of the Mn-doped CeO2 nanorods. Mater. Res. Bull. 45, 794 (2010).
N.S. Arul, D. Mangalaraj, P.C. Chen, N. Ponpandian, and C. Viswanathan: Self assembly of Co doped CeO2 microspheres from nanocubes by hydrothermalmethod and their photodegradation activity on AO7. Mater. Lett. 65, 3320 (2011).
T.S. Santos, W.S.D. Folly, and M.A. Macêdo: Ferromagnetism in diluted magnetic Zn-Co-doped CeO2−δ. Phys. B 407, 3233 (2012).
Z.L. Wang, Z.W. Quan, and J. Lin: Remarkable changes in the optical properties of CeO2 nanocrystals induced by lanthanide ions doping. Inorg. Chem. 46, 5237 (2007).
D. Channei, B. Inceesungvorn, N. Wetchakun, S. Ukritnukun, A. Nattestad, J. Chen, and S. Phanichphant: Photocatalytic degradation of methyl Orange by CeO2 and Fe-doped CeO2 films under visible light irradiation. Sci. Rep. 4, 5757 (2014).
A.D. Liyanage, S.D. Perera, K. Tan, Y. Chabal, and K.J. Balkus, Jr.: Synthesis, characterization, and photocatalytic activity of y-doped CeO2 nanorods. ACS Catal. 4, 577 (2014).
H.W. Yan, C.F. Blanford, B.T. Holland, W.H. Smyrl, and A. Stein: General synthesis of periodic macroporous solids by templated salt precipitation and chemical conversion. Chem. Mater. 12, 1134 (2000).
M. Radović, Z.D. Mitrović, A. Golubović, V. Fruth, S. Preda, M. Šćepanović, and Z.V. Popović: Influence of Fe3+-doping on optical properties of CeO2−y nanopowders. Ceram. Int. 39, 4929 (2013).
P.C.A. Brito, D.A.A. Santos, J.G.S. Duque, and M.A. Maêdo: Structural and magnetic study of Fe-doped CeO2. Phys. B 405, 1821 (2010).
F. Chen, X.X. Shen, Y.C. Wang, and J.L. Zhang: CeO2/H2O2 system catalytic oxidation mechanism study via a kinetics investigation to the degradation of acid orange 7. Appl. Catal., B 121–122, 223 (2012).
H. Xu, H.M. Li, G.S. Sun, J.X. Xia, C.D. Wu, Z.X. Ye, and Q. Zhang: Photocatalytic activity of La2O3-modified silver vanadates catalyst for Rhodamine B dye degradation under visible light irradiation. Chem. Eng. J. 160, 33 (2010).
Z. He, C. Sun, S.G. Yang, Y.C. Ding, H. He, and Z.L. Wang: Photocatalytic degradation of Rhodamine B by Bi2WO6 with electron accepting agent under microwave irradiation: Mechanism and pathway. J. Hazard. Mater. 162, 1477 (2009).
J.Y. Li, W.H. Ma, P.X. Lei, and J.C. Zhao: Detection of intermediates in the TiO2-assisted photodegradation of Rhodamine B under visible light irradiation. J. Environ. Sci. 19, 892 (2007).
X. Li, J.G. Yu, J.X. Low, Y.P. Fang, J. Xiao, and X.B. Chen: Engineering heterogeneous semiconductors for solar water splitting. J. Mater. Chem. A 3, 2485 (2015).
ACKNOWLEDGMENTS
This work was financially supported by the National Natural Science Foundation of China (Grant No. 51274106, 51474113, 51474037), the Natural Science Foundation of Jiangsu Provincial Higher Education of China (Grant No. 12KJA430001), the Science and Technology Support Program of Jiangsu Province of China (Grant No. BE2012143, BE2013071), the Jiangsu Province’s Postgraduate Cultivation and Innovation Project of China (Grant CXZZ13-0662, KYLX-1030, SJZZ-0132).
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Zou, L., Shen, X., Wang, Q. et al. Improvement of catalytic activity and mechanistic analysis of transition metal ion doped nanoCeO2 by aqueous Rhodamine B degradation. Journal of Materials Research 30, 2763–2771 (2015). https://doi.org/10.1557/jmr.2015.263
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DOI: https://doi.org/10.1557/jmr.2015.263