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Adsorption-photocatalytic degradation and kinetic of sodium isobutyl xanthate using the nitrogen and cerium co-doping TiO2-coated activated carbon
Bian, Zhenzhong1; Feng, Yali1; Li, Haoran2; Yu, Hao1; Wu, Hao1
2021
Source PublicationCHEMOSPHERE
ISSN0045-6535
Volume263Pages:13
AbstractAt present, the excessive use of sodium isobutyl xanthate (SIBX) in mineral processing has caused serious environmental problems, drawing ever-growing concern in China. A nitrogen and cerium co-doped TiO2-coated activated carbon (Ce/N-TiO2@AC) heterojunction were prepared through the sol-gel method to address these problems. The photocatalyst was characterized using XRD, TEM, SEM-EDS, PL, UV-Vis, XPS and a series of photoelectrochemical techniques. The results show that Ce/N-TiO2@AC photocatalyst possess a stable anatase phase, narrow band gap energy (2.24-2.61 eV) and high charge transport process. The photocatalytic activity of the photocatalyst was evaluated based on photodegradation kinetic studies of SIBX in aqueous solution, and it is found that it followed the Langmuir-Hinshelwood model very well. The Ce/N-TiO2@AC photocatalyst with 2% Ce appears to be the highest removal rate with 96.3% of SIBX and an apparent rate constant of 78.4 x 10(-3) min(-1). The reusability experiment for its potential applications was studied, and the removal rate of SIBX reached 95.8% after the fifth cycle. Besides, the proposed mechanism and degradation routes of SIBX were systematically studied, and certificate the concentration of SO42- ions in the final water sample was 95.9 mg/L, which was basically consistent with the theoretical value. (C) 2020 Elsevier Ltd. All rights reserved.
KeywordNitrogen and cerium Co-doped TiO2 Activated carbon Photocatalytic degradation Sodium isobutyl xanthate
DOI10.1016/j.chemosphere.2020.128254
Language英语
WOS KeywordVISIBLE-LIGHT RESPONSE ; TIO2 PHOTOCATALYST ; WATER-TREATMENT ; MECHANISM ; ELIMINATION ; FABRICATION ; REDUCTION ; CATALYST ; TITANIA ; SURFACE
Funding ProjectChina Ocean Mineral Resources RD Association[DY135-B2-15] ; Major Science and Technology Program for Water Pollution Control and Treatment[2015ZX07205-003] ; National Natural Science Foundation of China[21176242] ; National Natural Science Foundation of China[21176026]
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
Funding OrganizationChina Ocean Mineral Resources RD Association ; Major Science and Technology Program for Water Pollution Control and Treatment ; National Natural Science Foundation of China
WOS IDWOS:000595802200305
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/42971
Collection中国科学院过程工程研究所
Corresponding AuthorFeng, Yali
Affiliation1.Univ Sci & Technol Beijing, Sch Civil & Resource Engn, Beijing 100083, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, State Key Lab Biochem Engn, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Bian, Zhenzhong,Feng, Yali,Li, Haoran,et al. Adsorption-photocatalytic degradation and kinetic of sodium isobutyl xanthate using the nitrogen and cerium co-doping TiO2-coated activated carbon[J]. CHEMOSPHERE,2021,263:13.
APA Bian, Zhenzhong,Feng, Yali,Li, Haoran,Yu, Hao,&Wu, Hao.(2021).Adsorption-photocatalytic degradation and kinetic of sodium isobutyl xanthate using the nitrogen and cerium co-doping TiO2-coated activated carbon.CHEMOSPHERE,263,13.
MLA Bian, Zhenzhong,et al."Adsorption-photocatalytic degradation and kinetic of sodium isobutyl xanthate using the nitrogen and cerium co-doping TiO2-coated activated carbon".CHEMOSPHERE 263(2021):13.
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