Nanostructured copper aluminate spinels: Synthesis,structural, optical,magnetic, and catalytic properties |
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| Affiliation: | 1. Catalysis and Nanomaterials Research Laboratory, Department of Chemistry, Loyola College, Chennai 34, India;2. Materials Division, School of Advanced Sciences, Vellore Institute of Technology (VIT) University, Chennai Campus, Chennai 127, India;3. Nanotechnology Centre, University of Bahrain, PO Box 32038, Bahrain;4. Department of Physics, College of Science, University of Bahrain, PO Box 32038, Bahrain;1. Department of Physics, Mimar Sinan Fine Arts University, Sisli, Istanbul 34347, Turkey;2. Department of Energy Systems Engineering, Faculty of Engineering and Natural Sciences, Kadir Has University, Fatih, Istanbul 34083, Turkey;1. Department of Industrial Engineering, Faculty of Engineering, Bina Nusantara University, Jakarta 11480, Indonesia;2. Department of Mechanical Engineering, Universitas Pertamina, Jalan Teuku Nyak Arief, Simprug, Kebayoran Lama, Jakarta 12220, Indonesia;3. Department of Metallurgical and Materials Engineering, Universitas Indonesia, Kampus UI Depok, Jawa Barat 16424, Indonesia;1. State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, PR China;2. School of Materials and Chemical Engineering, Hainan University, Haikou 570228, PR China;1. Young Researchers and Elite Club, Najafabad Branch, Islamic Azad University, Najafabad, Iran;2. Advanced Materials Research Center, Department of Materials Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Iran;1. Department of Chemical Engineering, Central Tehran Branch, Islamic Azad University, Tehran, Iran;2. Esfarayen University of Technology, Esfarayen, North Khorasan, Iran;1. Catalysis and Nanomaterials Research Laboratory, Department of Chemistry, Loyola College, Chennai 34, India;2. Materials Division, School of Advanced Sciences, Vellore Institute of Technology (VIT) University, Chennai Campus, Chennai 127, India |
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| Abstract: | Copper aluminate nanostructured materials were synthesized by a microwave combustion method (MWCM) using the plant extract (aloe vera) as a fuel without using any other template or surfactant. For comparison, it was also prepared by using the conventional combustion method (CCM). The as-synthesized copper aluminate was characterized by powder X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), high resolution scanning electron microscopy (HR-SEM), energy dispersive X-ray analysis (EDX), diffuse reflectance spectroscopy (DRS), photoluminescence (PL) spectroscopy, nitrogen adsorption/desorption isotherms, and vibrating sample magnetometer (VSM). The results indicated that the copper aluminate nanomaterials obtained by MWCM shows good crystallinity with the uniform size distribution than the ones prepared by CCM. The XRD and FT-IR results confirmed the crystal structure of copper aluminate. The formation of copper aluminate nano- and microstructures were confirmed by HR-SEM. The optical absorption and photoluminescence emissions were determined by DRS and PL spectra, respectively. The effect of the catalyst and the oxidant on the catalytic oxidation of benzyl alcohol was also investigated. |
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| Keywords: | X-ray analysis Electron microscopy Nanostructure Microwave method Catalytic oxidation |
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