A simple method for preparing ZnO foam/carbon quantum dots nanocomposite and their photocatalytic applications |
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| Affiliation: | 1. School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, People''s Republic of China;2. Key Laboratory for Magnetism Materials of Education, Lanzhou University, Lanzhou 730000, People''s Republic of China;1. School of Physics and Optoelectronic Engineering, Nanjing University of Information Science & Technology, Nanjing 210044, PR China;2. College of Materials Science and Engineering, Nanjing Tech University, Nanjing 210009, PR China;1. Department of Chemistry, U-3060, University of Connecticut, Storrs, CT 06269-3060, United States;2. Institute of Materials Science, U-3136, University of Connecticut, Storrs, CT 06269, United States;3. Department of Chemical and Biomolecular Engineering, University of Connecticut, Storrs, CT 06269, United States;1. School of Chemistry and Chemical Engineering, Jiangsu University, 212013 Zhenjiang, PR China;2. School of Material Science and Engineering, Jiangsu University, 212013 Zhenjiang, PR China;3. Institute of Green Chemistry and Chemical Technology, School of Chemistry and Chemical Engineering, Jiangsu University, 212013 Zhenjiang, PR China;4. College of Physics, Jilin Normal University, 13600 Siping, PR China;5. School of Environment and Safety Engineering, Liaoning Normal University, 116029, Dalian, PR China;6. School of the Environment and Safety Engineering, Jiangsu University, 212013 Zhenjiang, PR China;1. LEPABE, Departamento de Engenharia Química, Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal;2. Departamento de Química-CICECO, Universidade de Aveiro, Campus de Santiago, Aveiro, Portugal |
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| Abstract: | ZnO foam/carbon quantum dots (CQDs) nanocomposite has been successfully synthesized by a facile process which ZnO foam prepared by combustion method was dispersed in CQDs solution. It is found that the ZnO foam is constructed by a large number of ZnO nanoparticles filling in irregular, hierarchical pores. The foam structure originates from a large amounts of gas produced in the combustion process. The obtained ZnO foam/CQDs nanocomposite shows excellent photocatalytic activities on degrading Rhodamine B (RhB), Methyl orange (MO) and Methylene blue (MB) under UV and visible light irradiation. The order of degradation efficiency is MB>RhB>MO. It is attributed to the synergistic effect of several factors, including the light-trapping effect of ZnO foam, the up-converted photoluminescence behavior and photo-induced electron transfer property of CQDs. |
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| Keywords: | ZnO foam Combustion Carbon quantum dots Nanocomposite Photocatalytic |
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