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Magnetic Ni-Doped TiO2 Photocatalysts for Disinfection of Escherichia coli Bacteria

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Alternative Title
Magnetic Ni-Doped TiO2 Photocatalysts for Disinfection of Escherichia coli Bacteria
Abstract
Ni-doped TiO2 nanoparticles have been synthesized by a modified sol?gel method. The crystal phase composition, particle size, and magnetic and optical properties of the samples were comprehensively examined using x-ray diffraction analysis, transmission electron microscopy, Brunauer?Emmett?Teller surface area analysis, Raman spectroscopy, magnetization measurements, and ultraviolet?visible (UV?Vis) absorption techniques. The results showed that the prepared Ni-doped TiO2 samples sintered at 400°C crystallized completely in anatase phase with average particle size in the range from 8 nm to 10 nm and presented broad visible absorption. The bactericidal efficiency of TiO2 was effectively enhanced by Ni doping, with an optimum Ni doping concentration of 6% (x?=?0.06), at which 95% of Escherichia coli were killed after just 90 min of irradiation. Density functional theory (DFT) calculations revealed good agreement with the experimental data. Moreover, the Ni dopant induced magnetic properties in TiO2, facilitating its retrieval using a magnetic field after use, which is an important feature for photocatalytic applications.
Author(s)
nguyen cao khangnghia manh nguyenvan quoc duongkhanh nguyen vanhung manh nguyenThang Dao Viet웬반쾅anh duc nguyenha thi vuchien tran danghong ngoc phan
Issued Date
2021
Type
Article
Keyword
TiO2Ni-dopedphotocatalyticE. coli
DOI
10.1007/s11664-020-08699-2
URI
https://oak.ulsan.ac.kr/handle/2021.oak/9500
https://ulsan-primo.hosted.exlibrisgroup.com/primo-explore/fulldisplay?docid=TN_cdi_pubmedcentral_primary_oai_pubmedcentral_nih_gov_7831148&context=PC&vid=ULSAN&lang=ko_KR&search_scope=default_scope&adaptor=primo_central_multiple_fe&tab=default_tab&query=any,contains,Magnetic%20Ni-Doped%20TiO2%20Photocatalysts%20for%20Disinfection%20of%20Escherichia%20coli%20Bacteria&offset=0&pcAvailability=true
Publisher
JOURNAL OF ELECTRONIC MATERIALS
Location
미국
Language
한국어
ISSN
0361-5235
Citation Volume
0
Citation Number
0
Citation Start Page
0
Citation End Page
0
Appears in Collections:
Natural Science > Physics
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