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TiO2-Horseradish Peroxidase Hybrid Catalyst Based on Hollow Nanofibers for Simultaneous Photochemical-Enzymatic Degradation of 2,4-Dichlorophenol
Ji, Xiaoyuan; Su, Zhiguo; Xu, Mengfang; Ma, Guanghui; Zhang, Songping
2016-07-01
Source PublicationACS SUSTAINABLE CHEMISTRY & ENGINEERING
ISSN2168-0485
Volume4Issue:7Pages:3634-3640
AbstractDegradations of 2,4-dichlorophenol (2,4-DCP) using TiO2/UV photochemical and horseradish peroxidase (HRP) enzymatic treatments, as well as simultaneous photochemical enzymatic treatments, by combining these two processes were systematically investigated and compared. When free HRP was used in the simultaneous process, a negative synergetic effect was observed due to serious inactivation of the HRP caused by UV irradiation in the presence of TiO2. A hybrid catalyst system was then developed by in situ encapsulating HRP inside nanochambers of TiO2-doped hollow nanofibers through coaxial electrospinning. Such encapsulation effectively avoided UV-induced deactivation of the enzymes, thus the 2,4-DCP degradation efficiency was improved significantly as compared with the that using HRP or TiO2/UV either separately or simultaneously in free formation. Furthermore, the higher the concentration of 2,4-DCP, the more remarkable the enhancement achieved, such that a 90% removal ratio was obtained within only 3 h for the degradation of 10 mM 2,4-DCP using the integrated TiO2 HRP hybrid catalyst system. While the removal ratio obtained with dispersed TiO2/UV, TiO2 doped in PU hollow nanofibers, free HRP, combination of dispersed TiO2 and free HRP under UV, as well as the encapsulated HRP, were only 31.37%, 27.98%, 49.71%, 36.53%, and 58.32%, respectively. The hybrid catalysts system also showed excellent recycling capability and thermal stability.
KeywordDegradation 2 Horseradish Peroxidase 4-dichlorophenol Tio2 Hollow Nanofiber
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
DOI10.1021/acssuschemeng.6b00075
Indexed BySCI
Language英语
WOS KeywordHORSERADISH-PEROXIDASE ; PHOTOCATALYTIC DEGRADATION ; BACTERIAL-DEGRADATION ; INDUCED INACTIVATION ; DEGUSSA P-25 ; CHLOROPHENOLS ; REMOVAL ; LACCASE ; TIO2 ; PENTACHLOROPHENOL
WOS Research AreaChemistry ; Engineering
WOS SubjectChemistry, Multidisciplinary ; Engineering, Chemical
Funding OrganizationNational Natural Science Foundation of China(21376249 ; 973 Program(2013CB733604) ; National Major Scientific Equipment Development Project(2013YQ14040S08) ; 21336010 ; 91534126)
WOS IDWOS:000380291200006
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/21270
Collection生化工程国家重点实验室
AffiliationChinese Acad Sci, Inst Proc Engn, State Key Lab Biochem Engn, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Ji, Xiaoyuan,Su, Zhiguo,Xu, Mengfang,et al. TiO2-Horseradish Peroxidase Hybrid Catalyst Based on Hollow Nanofibers for Simultaneous Photochemical-Enzymatic Degradation of 2,4-Dichlorophenol[J]. ACS SUSTAINABLE CHEMISTRY & ENGINEERING,2016,4(7):3634-3640.
APA Ji, Xiaoyuan,Su, Zhiguo,Xu, Mengfang,Ma, Guanghui,&Zhang, Songping.(2016).TiO2-Horseradish Peroxidase Hybrid Catalyst Based on Hollow Nanofibers for Simultaneous Photochemical-Enzymatic Degradation of 2,4-Dichlorophenol.ACS SUSTAINABLE CHEMISTRY & ENGINEERING,4(7),3634-3640.
MLA Ji, Xiaoyuan,et al."TiO2-Horseradish Peroxidase Hybrid Catalyst Based on Hollow Nanofibers for Simultaneous Photochemical-Enzymatic Degradation of 2,4-Dichlorophenol".ACS SUSTAINABLE CHEMISTRY & ENGINEERING 4.7(2016):3634-3640.
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