CAS OpenIR
The duet of surface and radical-based carbocatalysis for oxidative destructions of aqueous contaminants over built-in nanotubes of graphite
Wang, Yuxian1; Xi, Jiaxin1; Duan, Xiaoguang2; Lv, Weiguang3; Cao, Hongbin3; Chen, Chunmao1; Guo, Zhuang3; Xie, Yongbing3; Wang, Shaobin2
2020-02-15
Source PublicationJOURNAL OF HAZARDOUS MATERIALS
ISSN0304-3894
Volume384Pages:12
AbstractMetal-free mesoporous graphitic frameworks with built-in nanotubes (CPGs) were synthesized via facile co-pyrolysis of cyclodextrin and a cobalt salt with subsequent acid pickling to remove the embedded metal species. Due to the high graphitic degree and built-in few-layer nanotubes, the as-synthesized carbonaceous materials possess a higher catalytic ozonation activity than that of the state-of-the-art carbon nanotubes (CNTs) and LaMnO3 perovskite catalysts for the destruction of different aqueous contaminants. For recalcitrant oxalic acid removal, 50 mg L-1 oxalic acid was completely degraded in 20 min. Compared with other nanocarbons, the as-synthesized materials also demonstrated robust structural stability and reusability. The electron paramagnetic resonance (EPR) and selective radical quenching tests revealed that the destruction of the aqueous organics predominantly relied on surface-adsorbed complexes (O-ad(star) and O-2(star)) from activated ozone molecules. Owing to the occurrence of this surface oxidation pathway, the compatibility of the CPGs/O-3 system was significantly enhanced for treatment of real wastewater, where the inorganic anions and organic natural organic matter would inhibit radical oxidation as radical scavengers. Furthermore, by employing organics with different ionization potentials (IPs) as the target pollutants, the CPGs/O-3 system was discovered to obtain a high oxidation potential. [GRAPHICS] .
KeywordMetal-free catalysis Nonradical oxidation Carbon nanotubes Catalytic ozonation Reactive oxygen species (ROS)
DOI10.1016/j.jhazmat.2019.121486
Language英语
WOS KeywordEFFICIENT CATALYTIC OZONATION ; VISIBLE-LIGHT PHOTOACTIVITY ; NITROGEN-DOPED GRAPHENE ; CARBON NANOTUBES ; HYDROXYL RADICALS ; REACTIVE RADICALS ; DEGRADATION ; OXIDE ; REDUCTION ; OZONE
Funding ProjectNational Natural Science Foundation of China[21606253] ; National Science Fund for Distinguished Young Scholars of China[51425405] ; Science Foundation of China University of Petroleum, Beijing[2462016YJRC013] ; Beijing Natural Science Foundation[8172043] ; Beijing Natural Science Foundation[8192039]
WOS Research AreaEngineering ; Environmental Sciences & Ecology
WOS SubjectEngineering, Environmental ; Environmental Sciences
Funding OrganizationNational Natural Science Foundation of China ; National Science Fund for Distinguished Young Scholars of China ; Science Foundation of China University of Petroleum, Beijing ; Beijing Natural Science Foundation
WOS IDWOS:000508742700107
PublisherELSEVIER
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/39189
Collection中国科学院过程工程研究所
Corresponding AuthorChen, Chunmao; Xie, Yongbing
Affiliation1.China Univ Petr, State Key Lab Heavy Oil Proc, 18 Fuxue Rd, Beijing 102249, Peoples R China
2.Univ Adelaide, Sch Chem Engn, Adelaide, SA 5005, Australia
3.Chinese Acad Sci, Inst Proc Engn, Div Environm Technol & Engn, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Wang, Yuxian,Xi, Jiaxin,Duan, Xiaoguang,et al. The duet of surface and radical-based carbocatalysis for oxidative destructions of aqueous contaminants over built-in nanotubes of graphite[J]. JOURNAL OF HAZARDOUS MATERIALS,2020,384:12.
APA Wang, Yuxian.,Xi, Jiaxin.,Duan, Xiaoguang.,Lv, Weiguang.,Cao, Hongbin.,...&Wang, Shaobin.(2020).The duet of surface and radical-based carbocatalysis for oxidative destructions of aqueous contaminants over built-in nanotubes of graphite.JOURNAL OF HAZARDOUS MATERIALS,384,12.
MLA Wang, Yuxian,et al."The duet of surface and radical-based carbocatalysis for oxidative destructions of aqueous contaminants over built-in nanotubes of graphite".JOURNAL OF HAZARDOUS MATERIALS 384(2020):12.
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