Please use this identifier to cite or link to this item: https://rda.sliit.lk/handle/123456789/2950
Title: Fabrication of TiO2 Spheres and a Visible Light Active α‑Fe2O3/ TiO2‑Rutile/TiO2‑Anatase Heterogeneous Photocatalyst from Natural Ilmenite
Authors: Usgodaarachchi, L
Thambiliyagodage, C
Wijesekera, R
Vigneswaran, S
Kandanapitiye, M
Keywords: Fabrication
TiO 2 Spheres
Natural Ilmenite
Photocatalyst
Anatase Heterogeneous
Rutile/TiO 2
Fe 2 O 3 /TiO 2
Visible Light
Issue Date: 26-Jul-2022
Publisher: researchgate.net
Citation: Usgodaarachchi, Leshan & Thambiliyagodage, Charitha & Wijesekera, Ramanee & Vigneswaran, Saravanamuthu & Kandanapitiye, Murthi. (2022). Fabrication of TiO 2 Spheres and a Visible Light Active α-Fe 2 O 3 /TiO 2 -Rutile/TiO 2 -Anatase Heterogeneous Photocatalyst from Natural Ilmenite. ACS Omega. 7. 10.1021/acsomega.2c03262.
Series/Report no.: ACS Omega;7, 31, 27617-27637
Abstract: High-purity (98.8%, TiO2) rutile nanoparticles were successfully synthesized using ilmenite sand as the initial titanium source. This novel synthesis method was cost-effective and straightforward due to the absence of the traditional gravity, magnetic, electrostatic separation, ball milling, and smelting processes. Synthesized TiO2 nanoparticles were 99% pure. Also, highly corrosive environmentally hazardous acid leachate generated during the leaching process of ilmenite sand was effectively converted into a highly efficient visible light active photocatalyst. The prepared photocatalyst system consists of anatase-TiO2/rutile-TiO2/Fe2O3 (TF-800), rutile-TiO2/Fe2TiO5 (TFTO-800), and anatase-TiO2/Fe3O4 (TF-450) nanocomposites, respectively. The pseudo-second-order adsorption rate of the TF-800 ternary nanocomposite was 0.126 g mg–1 min–1 in dark conditions, and a 0.044 min–1 visible light initial photodegradation rate was exhibited. The TFTO-800 binary nanocomposite adsorbed methylene blue (MB) following pseudo-second-order adsorption (0.224 g mg–1 min–1) in the dark, and the rate constant for photodegradation of MB in visible light was 0.006 min–1. The prepared TF-450 nanocomposite did not display excellent adsorptive and photocatalytic performances throughout the experiment period. The synthesized TF-800 and TFTO-800 were able to degrade 93.1 and 49.8% of a 100 mL, 10 ppm MB dye solution within 180 min, respectively.
URI: http://rda.sliit.lk/handle/123456789/2950
ISSN: 2470-1343
Appears in Collections:Research Papers - School of Natural Sciences
School of Natural Sciences



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