Doping TiO(2)with CuSO(4)enhances visible light photocatalytic activity for organic pollutant degradation

doi:10.1007/s11356-019-05789-5

CNU IR > College of Sustainable Environment and Recreation > Dept. of Environmental Resources Management > Periodical Articles > Item 310902800/34135

Please use this identifier to cite or link to this item: https://ir.cnu.edu.tw/handle/310902800/34135

Title:	Doping TiO(2)with CuSO(4)enhances visible light photocatalytic activity for organic pollutant degradation
Authors:	de Luna, Mark Daniel G. Garcia-Segura, Sergi Mercado, Chinee H. Lin, Yao-Tung Lu, Ming-Chun
Contributors:	Univ Philippines, Coll Engn, Dept Chem Engn Univ Philippines, Natl Grad Sch Engn, Environm Engn Program Arizona State Univ, Sch Sustainable Engn & Built Environm, Nanosyst Engn Res Ctr Nanotechnol Enabled Water T Natl Chung Hsing Univ, Dept Soil & Environm Sci Chia Nan Univ Pharm & Sci, Dept Environm Resources Management
Keywords:	Persistent organic pollutants Wastewater treatment Visible light photocatalyst Nanotechnology Advanced oxidation process
Date:	2020
Issue Date:	2022-11-18 11:25:26 (UTC+8)
Publisher:	Springer Heidelberg
Abstract:	Photocatalysis is one of the most promising advanced oxidation processes due to the capability of solid catalyst to continuously produce oxidant species under light irradiation. The use of conventional UV lamps is high cost intensive, which undermines the possible implementation in developing countries. Visible light active photocatalysts can overcome these challenges and find a market opportunity for competitive technology implementation. This work proposes the synthesis of visible light active catalyst following a facile sol-gel synthesis that introduces CuSO(4)as dopant in TiO2. Results present complete abatement of methylene blue in 120 min of treatment under 50 mW cm(-2)of blue light (lambda = 450 nm), while commercial P25 TiO(2)presented null abatement under identical conditions. Synthesis parameters including dopant level and calcination temperature allowed defining optimum synthesis conditions based on material characteristics modification and catalytic activity enhancement. A doping level of 0.21 mol% CuSO(4)was identified as optimum condition to enable visible light photocatalysis of doped TiO(2)catalysts calcined at 300 degrees C. Finally, operational parameters were evaluated defining a wide range of pH operation under 3.0 g L(-1)of catalyst dose to treat up to 20 g L(-1)of highly recalcitrant phenothiazine dye. These optimum conditions allowed complete dye removal under visible light after 120 min of treatment.
Relation:	Environmental Science and Pollution Research, v.27, n.20, pp.10
Appears in Collections:	[Dept. of Environmental Resources Management] Periodical Articles

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