Facile in situ hydrothermal synthesis of BiVO4/MWCNT nanocomposites as high performance visible-light driven photocatalysts |
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| Institution: | 1. Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, PR China;2. Changzhou Expansion New Stuff Technology Limited Company, Changzhou 213122, PR China;3. Jilin Institute of Chemical Technology, Jilin 132022, PR China;1. Department of Physics, College of Science, King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia;2. Department of Physics, Manav Rachna College of Engineering, Faridabad, Haryana 121001, India;3. CSIR-National Physical Laboratory, New Delhi 110012, India;4. Department of Physics, Motilal Nehru National Institute of Technology, Allahabad, India;1. Department of Mechanical Engineering, Tokyo City University, 1-28-1 Tamazutsumi, Setagaya-ku, Tokyo, Japan;2. Advanced Research Laboratory, Tokyo City University, 8-15-1 Todoroki, Setagaya-ku, Tokyo, Japan |
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| Abstract: | Visible-light responsive monoclinic BiVO4/MWCNT nanocomposites were facilely prepared via an in situ hydrothermal method by using sodium dodecyl sulfonate (SDS) as a guiding surfactant. The as-prepared BiVO4/MWCNT nanocomposites were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), Raman spectroscopy, field emission scanning electron microscopy (FE-SEM), the Fourier transform infrared spectroscopy (FTIR) and UV–vis diffuse reflectance spectroscopy. The results showed that the hydrothermal temperature and adding SDS had significant influence on the morphology and size of BiVO4. The photocatalytic activities of BiVO4/MWCNT nanocomposites were investigated by degrading methylene blue (MB) under visible-light irradiation. Remarkable enhancement in photodecomposition of MB was observed with BiVO4/MWCNT composite compared with bare BiVO4 particles. This improvement of photocatalytic was attributed to the effective charge transfer from BiVO4 nanocrystals to MWCNT, which promoted the migration efficiency of photogenerated electron–hole. Furthermore, a possible mechanism for the photocatalytic oxidative degradation was also discussed. |
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| Keywords: | A Inorganic compounds A Nanostructures A Semiconductors D Optical properties |
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