CAS OpenIR
Metal-free catalytic ozonation on surface-engineered graphene: Microwave reduction and heteroatom doping
Wang, Yuxian1,2; Cao, Hongbin2; Chen, Chunmao1; Xie, Yongbing2; Sun, Hongqi3; Duan, Xiaoguang4,5; Wang, Shaobin4,5
2019
Source PublicationCHEMICAL ENGINEERING JOURNAL
ISSN1385-8947
Volume355Pages:118-129
AbstractN-doped graphene has demonstrated exceptional activities in versatile metal-free catalytic processes. In this study, reduced graphene oxide (rGO) and N-doped rGO were synthesized by a facile approach via microwave reduction with a low energy input and short reaction time. The activities of the derived carbocatalysts were evaluated by catalytic ozonation of 4-nitrophenol (4-NP). Compared with thermally annealed rGOs in argon atmosphere, microwave treated rGO demonstrated a better performance in catalytic oxidation, and N-doping would further improve the catalytic activity. It is discovered that microwave irradiation not only gave rise to more edging sites and dangling bonds in rGO, making higher catalytic potentials for ozone decomposition than that from thermal annealing, but also resulted in a higher concentration of N dopants. XPS studies revealed that more graphitic N species were incorporated into the carbon basal plane during the microwave reduction processes. The reactive oxygen species (ROS) in 4-NP oxidation were evaluated and identified by liquid-phase electron spin resonance (ESR) and radical scavenging tests, which indicated the generation of O-2(center dot-), center dot OH and O-1(2) for 4-NP degradation. This study provides a facile protocol for fabricating advanced nanocarbon materials for green oxidation and enables new insights in catalytic ozonation with state-of-the-art carbocatalysis.
KeywordMetal-free oxidation N-doping Microwave Defects Catalytic ozonation ROS
DOI10.1016/j.cej.2018.08.134
Language英语
WOS KeywordP-NITROPHENOL DEGRADATION ; NITROGEN-DOPED GRAPHENE ; WALLED CARBON NANOTUBES ; RAMAN-SPECTROSCOPY ; HYDROGEN-PEROXIDE ; PEROXYMONOSULFATE ACTIVATION ; ORGANIC POLLUTANTS ; ASSISTED SYNTHESIS ; REACTIVE RADICALS ; GRAPHITE OXIDE
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]
WOS Research AreaEngineering
WOS SubjectEngineering, Environmental ; Engineering, Chemical
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:000445416900012
PublisherELSEVIER SCIENCE SA
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/26043
Corresponding AuthorXie, Yongbing; Duan, Xiaoguang
Affiliation1.China Univ Petr, Dept Chem Engn, State Key Lab Heavy Oil Proc, 18 Fuxue Rd, Beijing 102249, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, Div Environm Technol & Engn, Beijing 100190, Peoples R China
3.Edith Cowan Univ, Sch Engn, 270 Joondalup Dr, Joondalup, WA 6027, Australia
4.Univ Adelaide, Sch Chem Engn, Adelaide, SA 5005, Australia
5.Curtin Univ, Dept Chem Engn, Perth, WA 6845, Australia
Recommended Citation
GB/T 7714
Wang, Yuxian,Cao, Hongbin,Chen, Chunmao,et al. Metal-free catalytic ozonation on surface-engineered graphene: Microwave reduction and heteroatom doping[J]. CHEMICAL ENGINEERING JOURNAL,2019,355:118-129.
APA Wang, Yuxian.,Cao, Hongbin.,Chen, Chunmao.,Xie, Yongbing.,Sun, Hongqi.,...&Wang, Shaobin.(2019).Metal-free catalytic ozonation on surface-engineered graphene: Microwave reduction and heteroatom doping.CHEMICAL ENGINEERING JOURNAL,355,118-129.
MLA Wang, Yuxian,et al."Metal-free catalytic ozonation on surface-engineered graphene: Microwave reduction and heteroatom doping".CHEMICAL ENGINEERING JOURNAL 355(2019):118-129.
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