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Received January 13, 2015
Accepted May 28, 2015
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This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits
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Synthesis, Characterization and Photocatalytic Activity of Reduced Graphene Oxide-Ce/ZnO Composites
School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, PR China
wjzhang@hebut.edu.cn
Korean Chemical Engineering Research, February 2016, 54(1), 127-134(8), 10.9713/kcer.2016.54.1.127 Epub 12 February 2016
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Abstract
A series of Ce-doped ZnO (Ce/ZnO) nanostructures were fabricated using the co-precipitation method, then a simply nontoxic hydrothermal approach was proposed for preparation of reduced graphene oxide (rGO)-Ce/ZnO composites. The synthesized composites were investigated by powder X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR), photoluminescence spectroscopy (PL), electrochemical impedance spectroscopy (EIS), UV-vis diffuse reflectance spectroscopy (DRS) techniques and Raman pattern. The as-synthesized rGO-Ce/ZnO composites showed high photodecomposition efficiency in comparison with the rGO-ZnO, Ce/ZnO, pure ZnO under UV, visible-light and sunlight irradiation. The degradation of methylene blue (MB) (10 mg/L, 100ml) by 95.8% within 60 min by using rGO-2 (10 mg) under sunlight irradiation was observed. The repeated use of the rGO-2 was investigated, and the results showed almost no decay in the catalytic activity.
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References
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Zong YQ, Li Z, Wang XM, Ma JT, Men Y, Ceram. Int., 40, 10375 (2014)
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Zhang XL, Zhao JL, Wang SG, Dai HT, Sun XW, Int. J. Hydrog. Energy, 39(16), 8238 (2014)
Peng F, Zhu H, Wang H, Yu H, Korean J. Chem. Eng., 24(6), 1022 (2007)
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Li XQ, Zhang TY, Gu SW, Kang SZ, Li GD, Mu J, Sep. Purif. Technol., 108, 139 (2013)
Xu SH, Fu L, Song T, Pham H, Yu A, Han FG, Chen L, Ceram. Int., 41, 4007 (2015)
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Liu SZ, Sun HQ, Suvorova A, Wang SB, Chem. Eng. J., 229, 533 (2013)
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Karunakaran C, Gomathisankar P, Manikandan G, Mater. Chem. Phys., 123(2-3), 585 (2010)
Ahmad M, Ahmed E, Hong ZL, Khalid NR, Ahmed W, Elhissi A, J. Alloy. Compd., 577, 717 (2013)
Zhang H, Lv XJ, Li YM, Wang Y, Li JH, ACS Nano., 4, 380 (2010)
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Zhou X, Shi TJ, Zhou HO, Appl. Surf. Sci., 258(17), 6204 (2012)
