Cobalt/Cobalt Oxide Surface for Water Oxidation

doi:10.1021/acssuschemeng.8b06269

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	Cobalt/Cobalt Oxide Surface for Water Oxidation
	Feizi, Hadi ; Bagheri, Robabeh 12; Song, Zhenlun 12; Shen, Jian-Ren ; Allakhverdiev, Suleyman I.; Najafpour, Mohammad Mahdi 3,4
刊名	ACS SUSTAINABLE CHEMISTRY & ENGINEERING
	2019
卷号	7 期号:6 页码:6093-6105
关键词	Artificial photosynthesis Energy Cobalt Oxygen Water oxidation
ISSN号	2168-0485
DOI	10.1021/acssuschemeng.8b06269
文献子类	Article
英文摘要	Water splitting to produce molecular hydrogen is an essential method to store sustainable energies. One of the bottlenecks for water splitting is the availability of an efficient and stable water-oxidizing catalyst. Herein, metallic cobalt foil, after the treatment under high potential (10-60.0 V), was used for water oxidation. The cobalt/ cobalt oxide surface was characterized by various spectroscopic, microscopy, X-ray diffraction, and electrochemical methods. Diffuse reflectance infrared Fourier transform spectroscopy showed peaks for Co oxide at 489 and 595 cm(-1) attributed to the stretching of Co-O and bending of O-Co-O bonds in the CoO6 octahedra. Small aggregated particles (ca. 50-100 nm) with a spherical morphology were detected by scanning electron microscopy, and high-resolution transmission electron microscopy from the mechanically separated particles indicated spacings of 2.5-2.6 angstrom corresponding to the interplanar spacings of the (011) plane for Co3O4. Selected area (electron) diffraction showed concentric rings centered on a bright central spot, indicating a polycrystalline material. Each ring is related to planes of different orientation and different interplanar spacing, attributed to metallic cobalt and cobalt oxides. X-ray diffraction resulted in patterns corresponding to Co3O4 and CoO(OH), and X-ray photoelectron spectroscopy could confirm the formation of metallic cobalt, Co(II) and Co(III) oxides on the surface of the electrode. These results suggest that the oxide on the surface of foil could be a mixture of different phases of Co oxide containing Co3O4 and CoO(OH). Under overpotentials of 460 and 780 mV, current densities of 0.144 and 0.5 A/cm(2) were observed at pH-14 without dropping of IR. To the best of our knowledge, the three-dimensional electrode obtained here is among the most efficient cobalt-based water-oxidizing electrodes under alkaline conditions reported so far and may be applied in large scale water-splitting systems.
学科主题	Chemistry, Multidisciplinary ; Green & Sustainable Science & Technology ; Engineering, Chemical
出版地	WASHINGTON
WOS关键词	HYDROGEN EVOLUTION REACTION ; OXYGEN-EVOLVING CATALYST ; ELECTROCATALYTIC RESPONSE ; COBALT PORPHYRINS ; NEUTRAL PH ; THIN-FILM ; ELECTRODES ; IRON ; CO ; NITROGEN
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Engineering
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000461978200054
资助机构	Iranian National Science Foundation (INSF)Iran National Science Foundation (INSF) [96003636] ; Russian Foundation for Basic Research (RFBR)Russian Foundation for Basic Research (RFBR) [17-54-560012] ; joint research project (INSF-RFBR)
内容类型	期刊论文
源URL	[http://ir.ibcas.ac.cn/handle/2S10CLM1/19487]
专题	中科院光生物学重点实验室
作者单位	1.Allakhverdiev, Suleyman I.] Russian Acad Sci, Inst Basic Biol Problems, Pushchino 142290, Moscow Region, Russia 2.IASBS, Res Ctr Basic Sci & Modern Technol RBST, Zanjan 4513766731, Iran 3.IASBS, Ctr Climate Change & Global Warming, Zanjan 4513766731, Iran 4.Allakhverdiev, Suleyman I.] Moscow Inst Phys & Technol, Dept Mol & Cell Biol, Inst Sky Lane 9, Dolgoprudnyi 141700, Moscow Region, Russia 5.Allakhverdiev, Suleyman I.] Moscow MV Lomonosov State Univ, Fac Biol, Dept Plant Physiol, Leninskie Gory 1-12, Moscow 119991, Russia 6.Allakhverdiev, Suleyman I.] Azerbaijan Natl Acad Sci, Inst Mol Biol & Biotechnol, Bionanotechnol Lab, Baku, Azerbaijan 7.Allakhverdiev, Suleyman I.] Russian Acad Sci, Inst Plant Physiol, Controlled Photobiosynth Lab, Bot Skaya St 35, Moscow 127276, Russia 8.Chinese Acad Sci, Inst Bot, Key Lab Photobiol, Photosynth Res Ctr, 20 Nanxincun, Beijing 100093, Peoples R China 9.Okayama Univ, Grad Sch Nat Sci & Technol, Okayama 7008530, Japan 10.Okayama Univ, Res Inst Interdisciplinary Sci, Okayama 7008530, Japan
推荐引用方式 GB/T 7714	Feizi, Hadi,Bagheri, Robabeh,Song, Zhenlun,et al. Cobalt/Cobalt Oxide Surface for Water Oxidation[J]. ACS SUSTAINABLE CHEMISTRY & ENGINEERING,2019,7(6):6093-6105.
APA	Feizi, Hadi,Bagheri, Robabeh,Song, Zhenlun,Shen, Jian-Ren,Allakhverdiev, Suleyman I.,&Najafpour, Mohammad Mahdi.(2019).Cobalt/Cobalt Oxide Surface for Water Oxidation.ACS SUSTAINABLE CHEMISTRY & ENGINEERING,7(6),6093-6105.
MLA	Feizi, Hadi,et al."Cobalt/Cobalt Oxide Surface for Water Oxidation".ACS SUSTAINABLE CHEMISTRY & ENGINEERING 7.6(2019):6093-6105.