Synthesis and characterization of g-C3N4/BiFeO3 composites with an enhanced visible light photocatalytic activity |
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| Affiliation: | 1. College of Materials Science and Engineering, Nanjing Tech University, No.5 Xinmofan Road, Nanjing 210009, China;2. Bengbu Design & Research Institute for Glass Industry, Bengbu City, AnHui Province, China;1. Solar Energy Lab, Department of Chemistry, Thiruvalluvar University, Vellore 632 115, India;2. DKM College for Women (Autonomous), Department of Biotechnology, Vellore 632 001, India;1. School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, PR China;2. Key Laboratory of Coastal Zone Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, Shandong, PR China;1. School of Environmental and Chemical Engineering, Shanghai University, Shanghai, 2000444, China;2. College of Sciences, Shanghai University, Shanghai, 200444, China;1. School of Mechanical and Materials Engineering, Washington State University, Pullman, WA 99164, United States;2. Key Laboratory of Luminescence and Real-Time Analytical Chemistry (Ministry of Education), College of Pharmaceutical Sciences, Southwest University, Chongqing 400716, China;3. Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, College of Environmental and Chemical Engineering, Nanchang Hangkong University, Nanchang 330063, China |
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| Abstract: | The novel visible light-induced g-C3N4/BiFeO3 composites were successfully synthesized by introducing BiFeO3 into polymeric g-C3N4. The structures and optical properties of composites were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), field-emission transmission electron microscope (TEM), UV–vis diffuse reflection spectroscopy (DRS), respectively. For the degradation of Rhodamine B (RhB), the g-C3N4/BiFeO3 composites exhibited significantly higher visible light photocatalytic activity than that of a single semiconductor. The optimal percentage of doped g-C3N4 was 50%. Both photooxidation and photoreduction processes follow first order kinetics. In addition, the stability of the prepared photocatalyst in the photocatalytic process was also investigated. The enhanced photocatalytic performance could be due to the high separation efficiency of the photogenerated electron–holes pairs. The possible photocatalytic mechanism of g-C3N4/BiFeO3 was proposed to guide the further improvement of their photocatalytic activity. |
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| Keywords: | Photocatalyst Photocatalytic properties Visible light |
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