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Sustainable and easy recoverable magnetic TiO2-Lignocellulosic Biomass@Fe3O4 for solar photocatalytic water remediation
Djellabi, Ridha; Yang, Bo; Sharif, Hafiz Muhammad Adeel; Zhang, Juanjuan; Ali, Jafar; Zhao, Xu
2019-10-01
Source PublicationJOURNAL OF CLEANER PRODUCTION
ISSN0959-6526
Volume233Pages:841-847
AbstractThis work was undertaken to design a magnetic TiO2 hybridized with lignocellulosic biomass (olive pits: OP) for dyes and Cr(VI) photocatalytic removal from water. Firstly, TiO2-OP was synthetized by ultrasonic-assisted sol-gel process, and then TiO2-OP@Fe3O4 was obtained via hydrothermal magnetization at 180 degrees C. Materials were characterized by XRD, BET, UV-DRS and XPS. The as-prepared photocatalysts showed a visible light responsive, wherein, Eg values are 3.20, 3.02, 3.00 and 2.55 eV for TiO2, TiO2@Fe3O4, TiO2-OP and TiO2-OP@Fe3O4, respectively. While the specific surface area values were as follows: 22.94, 15, 55.1 and 104.7 m(2)/g for TiO2, TiO2@Fe3O4, TiO2-OP and TiO2-OP@Fe3O4, respectively. Photocatalytic activities of TiO2@Fe3O4, TiO2-OP and TiO2-OP@Fe3O4 were tested for the photocatalytic removal of three dyes (Rhodamine B (RhB), Methylene blue (MB) and Congo Red (CR)) and hexavalent chromium under visible light. It was found that TiO2-OP@Fe3O4 composite exhibited higher adsorption and photocatalytic abilities compared with TiO2@Fe3O4 and TiO2-OP. The oxidation rates using TiO2-OP@Fe3O4 were 100, 75 and 81% within 1 h for MB, RhB and CR, respectively, at a dye concentration of 10 ppm and photocatalyst mass of 0.25 g/L. While the photocatalytic reduction rates of Cr(VI) (10 ppm, pH 3) were 64% (within 60 min), 70% (within 60 min) and 100% (within 40 min) by TiO2@Fe2O3, TiO2-OP and TiO2-OP@Fe3O4, respectively. The effect of pH, MB concentration, photocatalyst dose, co-presence of metallic cations and Tert-butyl alcohol concentration (as (OH)-O-center dot scavenger) on the MB oxidation was studied. Since the composite showed an excellent magnetic recoverability and high photocatalytic efficiency, it could be a potential candidate in industrial wastewater treatment. (C) 2019 Elsevier Ltd. All rights reserved.
Department中国科学院饮用水科学与技术重点实验室
KeywordLignocellulosic biomass Waste valorization Solar photocatalysis Magnetic recoverability Environmental remediation
Document Type期刊论文
Identifierhttp://ir.rcees.ac.cn/handle/311016/43530
Collection中国科学院饮用水科学与技术重点实验室
Affiliation1.Shenzhen Univ, Coll Chem & Environm Engn, Dept Environm Engn, Shenzhen 518055, Peoples R China
2.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Key Lab Drinking Water Sci & Technol, Beijing 100085, Peoples R China
3.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Key Lab Environm Biotechnol, Beijing 100085, Peoples R China
Recommended Citation
GB/T 7714
Djellabi, Ridha,Yang, Bo,Sharif, Hafiz Muhammad Adeel,et al. Sustainable and easy recoverable magnetic TiO2-Lignocellulosic Biomass@Fe3O4 for solar photocatalytic water remediation[J]. JOURNAL OF CLEANER PRODUCTION,2019,233:841-847.
APA Djellabi, Ridha,Yang, Bo,Sharif, Hafiz Muhammad Adeel,Zhang, Juanjuan,Ali, Jafar,&Zhao, Xu.(2019).Sustainable and easy recoverable magnetic TiO2-Lignocellulosic Biomass@Fe3O4 for solar photocatalytic water remediation.JOURNAL OF CLEANER PRODUCTION,233,841-847.
MLA Djellabi, Ridha,et al."Sustainable and easy recoverable magnetic TiO2-Lignocellulosic Biomass@Fe3O4 for solar photocatalytic water remediation".JOURNAL OF CLEANER PRODUCTION 233(2019):841-847.
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