Photocatalytic performance of Ag doped SnO2 nanoparticles modified with curcumin |
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| Institution: | 1. P.G. & Research Department of Chemistry, Thiagarajar College, Madurai, Tamilnadu 625009, India;2. Department of Chemistry, Cardamom Planters'' Association College, Bodinayakanur, Tamilnadu 625513, India;1. Department of Physics, Fergusson College, affiliated to Savitribai Phule Pune University, Pune 411004, India;2. Optical Nanomaterials Laboratory, Department of Optical Science, Tokushima University, 2-1 Minamijosanjima Cho, Tokushima, Japan;3. Laser&Plasma Technology Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India;1. Çukurova University, Science and Letters Faculty, Department of Chemistry, Adana 01330, Turkey;2. Kilis 7 Aral?k University, Science and Letters Faculty, Department of Chemistry, Kilis 79000, Turkey;1. School of Mechanical Engineering, Yeungnam University, Gyeongsan 712-749, South Korea;2. Department of Electronics and Computer Engineering, Hanyang University, Seoul 133-791, South Korea;3. Department of Physics, Acharya Nagarjuna University, Guntur, A.P. 522510, India;1. Department of Chemistry, Shahr-e-Qods Branch, Islamic Azad University, Tehran, Iran;2. Young Researchers and Elite Club, Science and Research Branch, Islamic Azad University, Tehran, Iran |
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| Abstract: | Visible light active Ag doped SnO2 nanoparticles modified with curcumin (Cur–Ag–SnO2) have been prepared by a combined precipitation and chemical impregnation route. The optical properties, phase structures and morphologies of the as-prepared nanoparticles were characterized using UV–visible diffuse reflectance spectra (UV–vis-DRS), X-ray powder diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS) and X-ray photoelectron spectroscopy (XPS). The surface area was measured by Brunauer. Emmett. Teller (B.E.T) analysis. Compared to bare SnO2, the surface modified photocatalysts (Ag–SnO2 and Cur–Ag–SnO2) showed a red shift in the visible region. The photocatalytic activity was monitored via the degradation of rose bengal (RB) dye and the results revealed that Cur–Ag–SnO2 shows better photocatalytic activity than that of Ag–SnO2 and SnO2. The superior photocatalytic activity of Cur–Ag–SnO2 could be attributed to the effective electron-hole separation by surface modification. The effect of photocatalyst concentration, initial dye concentration and electron scavenger on the photocatalytic activity was examined in detail. Furthermore, the antifungal activity of the photocatalysts and the reusability of Cur–Ag–SnO2 were tested. |
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| Keywords: | Curcumin Ag doping Rose bengal Visible light |
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