CAS OpenIR  > 湿法冶金清洁生产技术国家工程实验室
Tailored synthesis of active reduced graphene oxides from waste graphite: Structural defects and pollutant-dependent reactive radicals in aqueous organics decontamination
Wang, Yuxian1,2; Cao, Hongbin1; Chen, Lulu3; Chen, Chunmao2; Duan, Xiaoguang4; Xie, Yongbing1; Song, Weiyu3; Sun, Hongqi5; Wang, Shaobin4
2018-08-05
Source PublicationAPPLIED CATALYSIS B-ENVIRONMENTAL
ISSN0926-3373
Volume229Pages:71-80
AbstractAnode graphite was recovered from a spent lithium ion battery (LIB) and reutilized as a carbon precursor to obtain graphene-based materials. Characterization results revealed that impurities were removed from the obtained graphite powder by cleansing processes. The as-synthesized reduced graphene oxide (rGO) from the purified graphite (LIB-rGO) demonstrated excellent catalytic ozonation activity against organic pollutants removal. To probe potential catalytic active sites, LIB-rGOs with different defective levels but similar oxygen contents were synthesized. Catalytic ozonation tests revealed that a higher defective level resulted in a greater catalytic activity. Density functional theory (DFT) calculation further demonstrated that ozone molecules could spontaneously decompose into active oxygen species on graphene structural vacancies and edges, which consolidated the role of defective structure in catalytic ozonation activity. Meanwhile, we discovered the pollutant structure -dependent behavior of dominant reactive oxygen species (ROS) with the aid of radical scavenging tests and electron paramagnetic resonance (EPR) spectra. For phenolic pollutants vulnerable to direct ozone attacking, superoxide radicals (O-2 center dot(-)) and singlet oxygen (O-1(2)) were found to be responsible ROS, whereas hydroxyl radicals (center dot OH) were identified as the principle ROS for aliphatic organic pollutants destruction. This study not only put forward a possible way for reutilization of waste LIB anode, but also stepped further for investigating the catalytic ozonation mechanism towards the graphene-based materials including the active sites and the generation of ROS.
KeywordReduced Graphene Oxide Catalytic Ozonation Defects Density Functional Theory Reactive Oxygen Species
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
DOI10.1016/j.apcatb.2018.02.010
Indexed BySCI
Language英语
WOS KeywordEFFICIENT CATALYTIC OZONATION ; WALLED CARBON NANOTUBES ; HYDROGEN-PEROXIDE ; OXYGEN REDUCTION ; WATER-TREATMENT ; OXIDATION ; MECHANISM ; OZONE ; ACTIVATION ; PHENOL
WOS Research AreaChemistry ; Engineering
WOS SubjectChemistry, Physical ; Engineering, Environmental ; Engineering, Chemical
Funding OrganizationNational Science Fund for Distinguished Young Scholars of China(51425405) ; National Natural Science Foundation of China(21606253) ; Science Foundation of China University of Petroleum, Beijing(2462016YJRC013) ; Beijing Natural Science Foundation(8172043)
WOS IDWOS:000428488600009
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/24139
Collection湿法冶金清洁生产技术国家工程实验室
Affiliation1.Chinese Acad Sci, Inst Proc Engn, Div Environm Technol & Engn, Beijing 100190, Peoples R China
2.China Univ Petr, Dept Chem Engn, State Key Lab Heavy Oil Proc, 18 Fuxue Rd, Beijing 102249, Peoples R China
3.China Univ Petr, Coll Sci, State Key Lab Heavy Oil Proc, 18 Fuxue Rd, Beijing 102249, Peoples R China
4.Curtin Univ, Dept Chem Engn, GPO Box U1987, Perth, WA 6845, Australia
5.Edith Cowan Univ, Sch Engn, 270 Joondalup Dr, Joondalup, WA 6027, Australia
Recommended Citation
GB/T 7714
Wang, Yuxian,Cao, Hongbin,Chen, Lulu,et al. Tailored synthesis of active reduced graphene oxides from waste graphite: Structural defects and pollutant-dependent reactive radicals in aqueous organics decontamination[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2018,229:71-80.
APA Wang, Yuxian.,Cao, Hongbin.,Chen, Lulu.,Chen, Chunmao.,Duan, Xiaoguang.,...&Wang, Shaobin.(2018).Tailored synthesis of active reduced graphene oxides from waste graphite: Structural defects and pollutant-dependent reactive radicals in aqueous organics decontamination.APPLIED CATALYSIS B-ENVIRONMENTAL,229,71-80.
MLA Wang, Yuxian,et al."Tailored synthesis of active reduced graphene oxides from waste graphite: Structural defects and pollutant-dependent reactive radicals in aqueous organics decontamination".APPLIED CATALYSIS B-ENVIRONMENTAL 229(2018):71-80.
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