TY - JOUR ID - 244576 TI - Sol-Gel to Prepare Nickel Doped TiO2 Nanoparticles for Photocatalytic Treatment of E 131 VF Food Dye Wastewater JO - Journal of Water and Environmental Nanotechnology JA - JWENT LA - en SN - 2476-7204 AU - Barakat, Malak AU - Khoder, Rassil AU - Kassir, Fatima AU - Harajli, Zeinab AU - El Jamal, Mouhiaddine Mohamed AU - Ebrahimian Pirbazari, Azadeh AD - Inorganic and Organometallic Coordination Chemistry Laboratory (LCIO), Faculty of Sciences (I), Lebanese University, Rafic Hariri Campus, El Hadath, Lebanon AD - Fouman Faculty of Engineering, College of Engineering, University of Tehran Y1 - 2021 PY - 2021 VL - 6 IS - 2 SP - 92 EP - 108 KW - Sol-gel KW - Ni/TiO2 KW - Ethanol KW - Food dye E 131 VF KW - Kinetic study DO - 10.22090/jwent.2021.02.001 N2 - Sol–gel method was applied for synthesis of TiO2 nanoparticles in the existence of different volumes of ethanol (10–50 mL) with the purpose to find optimized synthesis conditions. Also, nickel doped TiO2 nanoparticles (Ni/TiO2 molar ratio: 0.1-1.0%) were prepared by the similar technique but in the existence of 10 mL ethanol and heated at different temperatures (300 °C –600 °C). XRD, SEM/EDX, UV-Vis DRS, FTIR and Raman spectroscopy were applied to identify the structural and morphological characteristics of the as-synthesized samples. XR diffraction results verified that TiO2 samples prepared with various volumes of ethanol (10–50 mL) consist of anatase and brookite phases up to 500 °C and rutile phase at 600 °C. The intensity of brookite diffraction decreased with the increase of calcination temperatures. Also, the low ethanol volume favored for formation of rutile phase at 600 °C. The addition of Ni(II) during the preparation of TiO2 nanoparticles prevented the formation of rutile phase. The undoped samples were synthesized with 10 and 20 mL ethanol and treated at 500 °C displayed the best catalytic performance for photocatalytic treatment of E 131 VF dye solution (rate constant: 0.051 and 0.061 (a.u) respectively). Ni doped TiO2 samples displayed lower photoactivity and rate constant. UR - https://www.jwent.net/article_244576.html L1 - https://www.jwent.net/article_244576_05c5a687aae9d22a7d2a83af70769256.pdf ER -