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Zinc-cobalt oxides as efficient water oxidation catalysts: the promotion effect of ZnO
Rong, Feng1,2; Zhao, Jiao1; Su, Panpan1,2; Yao, Yi1,2; Li, Mingrun1; Yang, Qihua1; Li, Can1
刊名JOURNAL OF MATERIALS CHEMISTRY A
2015
DOI10.1039/c4ta06527a
3期:7页:4010-4017
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences ; Technology
类目[WOS]Chemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary
研究领域[WOS]Chemistry ; Energy & Fuels ; Materials Science
关键词[WOS]RAY-ABSORPTION SPECTROSCOPY ; OXYGEN EVOLUTION REACTION ; LAYERED DOUBLE HYDROXIDE ; PHOTOSYSTEM-II ; METAL-OXIDES ; NANOPARTICLES ; CO ; LIGHT ; NI ; ELECTROCATALYST
英文摘要Herein, we report the promotion effect of ZnO in water oxidation catalyzed by Co. Zinc-cobalt oxides-ZnCoxOy were prepared via the calcination of Zn-Cox-coordination polymers. The results of XRD, Co Kedge XANES and EXAFS show that the Co/Zn ratio greatly affected the oxidation state of Co and local structure of the ZnCoxOy oxides. With a Co/Zn ratio higher than 3.0, Zn(II) prefers to substitute in the lattice of Co3O4. The integrated ZnO and Co3O4 composites were formed at a Co/Zn ratio less than 2.0. The HR-TEM images show that ZnO and Co3O4 compactly contact to form the interfaces in the composites. In both the chemical water oxidation and the visible-light-driven photocatalytic water oxidation ([Ru(bpy)3](2+)-persulfate system), Zn substituted in the spinel structured Co3O4 oxide cannot significantly improve the water oxidation activity and only the integrated ZnO and Co3O4 composites afford much higher TOFs than Co3O4. This suggests the existence of the cooperation effect between ZnO (water adsorption site) and Co3O4 (water oxidation site). Our results provide a facile approach to design composite catalysts for the water oxidation reaction.
语种英语
WOS记录号WOS:000349447200094
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被引频次:23[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/145943
专题中国科学院大连化学物理研究所
作者单位1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China
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Rong, Feng,Zhao, Jiao,Su, Panpan,et al. Zinc-cobalt oxides as efficient water oxidation catalysts: the promotion effect of ZnO[J]. JOURNAL OF MATERIALS CHEMISTRY A,2015,3(7):4010-4017.
APA Rong, Feng.,Zhao, Jiao.,Su, Panpan.,Yao, Yi.,Li, Mingrun.,...&Li, Can.(2015).Zinc-cobalt oxides as efficient water oxidation catalysts: the promotion effect of ZnO.JOURNAL OF MATERIALS CHEMISTRY A,3(7),4010-4017.
MLA Rong, Feng,et al."Zinc-cobalt oxides as efficient water oxidation catalysts: the promotion effect of ZnO".JOURNAL OF MATERIALS CHEMISTRY A 3.7(2015):4010-4017.
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