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Self-Templating Synthesis of 3D Hierarchical NiCo2O4@NiO Nanocage from Hydrotalcites for Toluene Oxidation
Wang, Dongdong1,2; Li, Shuangde1; Du, Yingchao1,2; Wu, Xiaofeng1; Chen, Yunfa1,2,3
2019-04-01
Source PublicationCATALYSTS
ISSN2073-4344
Volume9Issue:4Pages:15
AbstractRational design LDHs (layered double hydroxides) with 3D hierarchical hollow structures have generated widespread interest for catalytic oxidation due to the high complexity in shell architecture and composition. Herein, we reported a handy two-step method to construct a 3D hierarchical NiCo2O4/NiO nanocage. This synthetic strategy contains a partial in situ transformation of ZIF-67 (zeolitic imidazolate framework-67) into Co-NiLDH yolk-shelled structures following ethanol etching, and a structure-preserved transformation from Co-NiLDH@ZIF-67 to a biphase nanocage following calcination. CoNi-yh-T (varied reaction time and calcination temperature) nanocages were investigated systematically by Brunauer-Emmett-Teller (BET), X-ray photoelectron spectroscopy (XPS), H-2- temperature-programmed reduction (TPR), NH3-temperature-programmed desorption (TPD) and studied for toluene oxidation. The CoNi-6h-350 sample showed much higher activity with 90% toluene conversion (T-90) at 229 degrees C at a high space velocity (SV = 60,000 mL g(-1) h(-1)) than other catalysts (T-90 >240 degrees C). Abundant surface high valence Co ions caused by the novel hierarchical nanostructures, together with adsorbed oxygen species and abundant medium-strength surface acid sites, played a key role for catalytic activities.
Keywordhierarchical nanocage high surface area toluene oxidation lattice defect
DOI10.3390/catal9040352
Language英语
WOS KeywordSELECTIVE CATALYTIC-REDUCTION ; LAYERED-DOUBLE-HYDROXIDES ; MIXED-METAL OXIDES ; HIGH-PERFORMANCE ; SCALABLE SYNTHESIS ; SPINEL CATALYSTS ; MESOPOROUS CO3O4 ; NICKEL-COBALT ; CO ; NI
Funding ProjectNational Key R&D Program of China[2017YFC0211503] ; National Key R&D Program of China[2016YFC0207100] ; National Natural Science Foundation of China[21401200] ; National Natural Science Foundation of China[51672273] ; Open Research Fund of State Key Laboratory of Multi-phase Complex Systems[MPCS-2017-D-06]
WOS Research AreaChemistry
WOS SubjectChemistry, Physical
Funding OrganizationNational Key R&D Program of China ; National Natural Science Foundation of China ; Open Research Fund of State Key Laboratory of Multi-phase Complex Systems
WOS IDWOS:000467315600051
PublisherMDPI
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/28254
Collection中国科学院过程工程研究所
Corresponding AuthorLi, Shuangde; Chen, Yunfa
Affiliation1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Inst Urban Environm, Ctr Excellence Reg Atmospher Environm, Xiamen 361021, Peoples R China
Recommended Citation
GB/T 7714
Wang, Dongdong,Li, Shuangde,Du, Yingchao,et al. Self-Templating Synthesis of 3D Hierarchical NiCo2O4@NiO Nanocage from Hydrotalcites for Toluene Oxidation[J]. CATALYSTS,2019,9(4):15.
APA Wang, Dongdong,Li, Shuangde,Du, Yingchao,Wu, Xiaofeng,&Chen, Yunfa.(2019).Self-Templating Synthesis of 3D Hierarchical NiCo2O4@NiO Nanocage from Hydrotalcites for Toluene Oxidation.CATALYSTS,9(4),15.
MLA Wang, Dongdong,et al."Self-Templating Synthesis of 3D Hierarchical NiCo2O4@NiO Nanocage from Hydrotalcites for Toluene Oxidation".CATALYSTS 9.4(2019):15.
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