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Synthesis of dynamic g-C3N4/Fe@ZnO nanocomposites for environmental remediation applications
Affiliation:1. China CAMC Engineering Wuhan University Design & Research Company Limited (CAMCE Whu Design & Research Co Ltd), Wuhan, 430000, PR China;2. School of the Environment and Safety Engineering, Institute for Energy Research, Jiangsu University, Zhenjiang, 212013, PR China;3. School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang, 212013, PR China;1. Department of Studies in Physics, University of Mysore, Manasagangothri, Mysuru, 570006, India;2. Department of Nanoscience and Technology, Bharathiar University, Coimbatore, 641064, India;1. Centre for Advanced Composite Materials, Department of Mechanical Engineering, The University of Auckland, Auckland, New Zealand;2. Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education and Hubei Key Laboratory of Nuclear Solid Physics, School of Physics and Technology, Wuhan University, Wuhan 430072, PR China;3. Engineering Research Center for Functional Ceramics of the Ministry of Education, School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, PR China;1. State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, 122 Luoshi Road, 430070, Wuhan, Hubei, China;2. Nanostructure Research Centre (NRC), Wuhan University of Technology, 122 Luoshi Road, 430070, Wuhan, Hubei, China;3. Laboratory of Inorganic Materials Chemistry (CMI), University of Namur, 61 rue de Bruxelles, B-5000, Namur, Belgium;4. Clare Hall, University of Cambridge, Herschel Road, Cambridge, CB3 9AL, United Kingdom
Abstract:An effective g-C3N4/Fe@ZnO heterostructured photocatalyst was synthesized by a simple chemical co-precipitation method and characterized by X-ray diffraction, Fourier transform infrared spectroscopy, transmission electron microscopy and ultraviolet–visible spectroscopy. Transmission electron microscopy revealed that 7-8 nm-sized 1%Fe@ZnO nanoparticles were evenly distributed on g-C3N4 nanosheets to form a hybrid composite. The photocatalytic effectiveness of the composites was assessed against methylene blue dye, and it was found that the 50%g-C3N4/Fe@ZnO photocatalyst was more efficient in harvesting solar energy to degrade dye than the ZnO, 1%Fe@ZnO, g-C3N4, g-C3N4/ZnO and (10, 25, 40, 60 & 75 wt%) g-C3N4/Fe@ZnO samples. The antibacterial competency of the samples was also explored against Gram-positive (Bacillus subtilis, Staphylococcus aureus and Streptococcus salivarius) and Gram-negative (Escherichia coli) bacteria through the well diffusion method. The 50%g-C3N4/Fe@ZnO nanocomposite exhibited a superior antibacterial action compared to that of the rest of the samples. The exceptionally improved photocatalytic and antimicrobial efficiency of the 50%g-C3N4/Fe@ZnO composite was primarily accredited to the synergic outcome of the interface established between Fe@ZnO nanoparticles and g-C3N4 nanosheets.
Keywords:Photocatalyst  Graphitic carbon nitride  Broad spectrum antibacterial  Fe nanocomposite
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