Abstract
Photodegradation of organic pollutants over semiconductor catalysts is considered to be a viable method for wastewater treatment. Of the different semiconductor photocatalysts, ZnO has been widely used for the photodegradation of organic pollutants. Meanwhile, graphene is being actively investigated as a cocatalyst for such processes. The high carrier transport rate of graphene can favor the transfer of photoexcited electrons, while the increased specific surface area provides adsorption sites for the organic effluent molecules, thereby improving overall photocatalytic activity. Therefore, in this study, Pt–ZnO–reduced graphene oxide (RGO) rods with different RGO contents are synthesize during a novel Pt-induced electrochemical method, where Zn∣ZnO acts as the anode and Pt∣H2O∣H2 acts as the cathode. The photocatalytic degradation activity of the Pt–ZnO–RGO rods is remarkably improved under UV–visible light irradiation, with the optimum loading RGO content of 1 wt%.
Similar content being viewed by others
Explore related subjects
Discover the latest articles, news and stories from top researchers in related subjects.References
Xiang QJ, Yu JG, Jaroniec M et al (2012) Graphene-based semiconductor photocatalysts. Chem Soc Rev 41:782–796
Ahmed S, Rasul MG, Martens WN et al (2010) Heterogeneous photocatalytic degradation of phenols in wastewater: a review on current status and developments. Desalination 261:3–18
Chen CC, Ma WH, Zhao JC (2010) Semiconductor-mediated photodegradation of pollutants under visible-light irradiation. Chem Soc Rev 39:4206–4219
Chong MN, Jin B, Chow CWK et al (2010) Recent developments in photocatalytic water treatment technology: a review. Water Res 44:2997–3027
Akhavan O, Abdolahad M, Esfandiar A et al (2010) Photodegradation of graphene oxide sheets by TiO2 nanoparticles after a photocatalytic reduction. J Phys Chem C 114:12955–12959
Chatterjee D, Dasgupta S (2005) Visible light induced photocatalytic degradation of organic pollutants. J Photochem Photobiol C 6:186–205
Kuo CH, Yang YC, Gwo S et al (2011) Facet-dependent and Au nanocrystal-enhanced electrical and photocatalytic properties of Au–Cu2O core–shell heterostructures. J Am Chem Soc 133:1052–1057
Liao GZ, Chen S, Quan X et al (2012) Graphene oxide modified g-C3N4 hybrid with enhanced photocatalytic capability under visible light irradiation. J Mater Chem 22:2721–2726
Chakrabarti S, Dutta BK (2004) Photocatalytic degradation of model textile dyes in wastewater using ZnO as semiconductor catalyst. J Hazard Mater 112:269–278
Lu F, Cai WP, Zhang YG (2008) ZnO hierarchical micro/nanoarchitectures: solvothermal synthesis and structurally enhanced photocatalytic performance. Adv Funct Mater 18:1047–1056
Fu DY, Han GY, Chang YZ et al (2012) The synthesis and properties of ZnO–graphene nano hybrid for photodegradation of organic pollutant in water. Mater Chem Phys 132:673–681
Xu L, Hu YL, Pelligra C et al (2009) ZnO with different morphologies synthesized by solvothermal methods for enhanced photocatalytic activity. Chem Mater 21:2875–2885
Liu XX, Cheng WJ, Ma XM et al (2006) Fluorescence emission properties of Ni-doped ZnO films. Spectrosc Spectr Anal 26:2069–2071
Ofuchi H, Jin ZW, Fukumura T et al (2005) Fluorescence EXAFS study on local structures around Mn and Fe atoms doped in ZnO. Phys Scripta T115:614–615
Height MJ, Pratsinis SE, Mekasuwandumrong O et al (2006) Ag–ZnO catalysts for UV-photodegradation of methylene blue. Appl Catal B Environ 63:305–312
Huang ML, Xu CF, Wu ZB et al (2008) Photocatalytic discolorization of methyl orange solution by Pt modified TiO2 loaded on natural zeolite. Dyes Pigment 77:327–334
Wang XW, Liu G, Wang LZ et al (2012) ZnO–CdS@Cd heterostructure for effective photocatalytic hydrogen generation. Adv Energy Mater 2:42–46
Huang X, Qi XY, Boey F et al (2012) Graphene-based composites. Chem Soc Rev 41:666–686
Castro Neto AH, Guinea F, Peres NMR et al (2009) The electronic properties of graphene. Rev Mod Phys 81:109–162
Allen MJ, Tung VC, Kaner RB (2010) Honeycomb carbon: a review of graphene. Chem Rev 110:132–145
Zhang HC, Ming H, Lian SY et al (2011) Fe2O3/carbon quantum dots complex photocatalysts and their enhanced photocatalytic activity under visible light. Dalton Trans 40:10822–10825
Luo QP, Yu XY, Lei BX et al (2012) Reduced graphene oxide–hierarchical ZnO hollow sphere composites with enhanced photocurrent and photocatalytic activity. J Phys Chem C 116:8111–8117
Zhang H, Lv XJ, Li YM et al (2010) P25-graphene composite as a high performance photocatalyst. ACS Nano 4:380–386
Zhao JP, Pei SF, Ren WC et al (2010) Efficient preparation of large-area graphene oxide sheets for transparent conductive films. ACS Nano 4:5245–5252
Zhang H, Fan XF, Quan X et al (2011) Graphene sheets grafted Ag@AgCl hybrid with enhanced plasmonic photocatalytic activity under visible light. Environ Sci Technol 45:5731–5736
Wang XW, Tian HW, Yang Y et al (2012) Reduced graphene oxide/CdS for efficiently photocatalystic degradation of methylene blue. J Alloys Compd 524:5–12
Acknowledgments
This work was supported by the National Natural Science Foundation of China (51202105, 21203088, 21263016), Science and Technology Project of Education Department of Jiangxi Province (GJJ12046) and the Opening Project of State Key Laboratory of High Performance Ceramics and Superfine Microstructure (SKL201205SIC). We also acknowledge great support from the Institute of Metal Research, Chinese Academy of Sciences.
Author information
Authors and Affiliations
Corresponding author
Additional information
SPECIAL ISSUE: Advanced Materials for Clean Energy
About this article
Cite this article
Wang, X., Yao, X. Pt-induced electrochemical growth of ZnO rods onto reduced graphene oxide for enhanced photodegradation performance. Chin. Sci. Bull. 59, 2208–2213 (2014). https://doi.org/10.1007/s11434-014-0251-4
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11434-014-0251-4