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Different roles of Fe atoms and nanoparticles on g-C3N4 in regulating the reductive activation of ozone under visible light
Cao, Hongbin1; Wang, Jing1,2; Kim, Jae-Hong3; Guo, Zhuang1; Xiao, Jiadong4; Yang, Jin5; Chang, Junjun1; Shi, Yanchun1; Xie, Yongbing1
2021-11-05
Source PublicationAPPLIED CATALYSIS B-ENVIRONMENTAL
ISSN0926-3373
Volume296Pages:12
AbstractThe identification of active sites and the establishment of structure-reactivity relationship at atomic scale is important for designing efficient catalysts and understanding the reaction mechanism. Here, single atom catalysts (SACs) of Fe anchored on g-C3N4 were synthesized. The catalysts have larger surface area, more photogenerated electrons with stronger reduction ability and faster charge carrier migration than g-C3N4, thereby exhibited dramatically enhanced activity and stability in electron reduction of ozone (O3) under visible light. However, lower catalytic performance was observed when Fe nanoparticles coexisted, which regulated more photoelectrons to reduce O2 to center dot OH via two or three-electron reduction pathways rather than one-electron reduction of O3. Mo center dot ssbauer spectrum and X-ray adsorption spectroscopy indicated that the presence of Fe nanoparticles led to higher proportion of Fe(II)Nx, which played more significant role in the adsorption and reduction of O2. The insight on the contribution of different Fe sites with well-defined local coordination structure is beneficial for rational design of efficient catalysts in photocatalytic ozonation.
KeywordSingle atom catalyst (SAC) Photocatalytic ozonation Nanoparticles
DOI10.1016/j.apcatb.2021.120362
Language英语
WOS KeywordGRAPHITIC CARBON NITRIDE ; ELECTRON-TRANSFER ; POROUS G-C3N4 ; SINGLE-ATOM ; OXIDATION ; PERFORMANCE ; WATER ; C3N4 ; PHOTOCATALYST ; NANOSHEETS
Funding ProjectTianjin Mnunicipal Science and Technology Bureau[18YFYSZ00170] ; Major Science and Technology Program for Water Pollution Control and Treatment[2017ZX07402001]
WOS Research AreaChemistry ; Engineering
WOS SubjectChemistry, Physical ; Engineering, Environmental ; Engineering, Chemical
Funding OrganizationTianjin Mnunicipal Science and Technology Bureau ; Major Science and Technology Program for Water Pollution Control and Treatment
WOS IDWOS:000706857300008
PublisherELSEVIER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/50644
Collection中国科学院过程工程研究所
Corresponding AuthorXie, Yongbing
Affiliation1.Chinese Acad Sci, Beijing Engn Res Ctr Proc Pollut Control, Inst Proc Engn, CAS Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Yale Univ, Dept Chem & Environm Engn, New Haven, CT 06511 USA
4.Shinshu Univ, Res Initiat Supra Mat RISM, 4-17-1 Wakasato, Nagano, Nagano 3808553, Japan
5.Tech Univ Berlin, Dept Chem Funct Mat, D-10623 Berlin, Germany
Recommended Citation
GB/T 7714
Cao, Hongbin,Wang, Jing,Kim, Jae-Hong,et al. Different roles of Fe atoms and nanoparticles on g-C3N4 in regulating the reductive activation of ozone under visible light[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2021,296:12.
APA Cao, Hongbin.,Wang, Jing.,Kim, Jae-Hong.,Guo, Zhuang.,Xiao, Jiadong.,...&Xie, Yongbing.(2021).Different roles of Fe atoms and nanoparticles on g-C3N4 in regulating the reductive activation of ozone under visible light.APPLIED CATALYSIS B-ENVIRONMENTAL,296,12.
MLA Cao, Hongbin,et al."Different roles of Fe atoms and nanoparticles on g-C3N4 in regulating the reductive activation of ozone under visible light".APPLIED CATALYSIS B-ENVIRONMENTAL 296(2021):12.
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