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Synthesis of Nanorod-Shaped Cobalt Hydroxycarbonate and Oxide with the Mediation of Ethylene Glycol
Xie, Xiaowei2; Shang, Panju1; Liu, Zhiquan1; Lv, Yongge2; Li, Yong2; Shen, Wenjie2; Shen WJ(申文杰)
Source PublicationJOURNAL OF PHYSICAL CHEMISTRY C
2010-02-11
DOI10.1021/jp911011g
Volume114Issue:5Pages:2116-2123
Indexed BySCI
SubtypeArticle
Department5
Funding Project501
Contribution Rank1;1
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
WOS SubjectChemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science
WOS KeywordLAYERED DOUBLE HYDROXIDES ; HYDROTALCITE-LIKE COMPOUNDS ; ANION-EXCHANGE REACTIONS ; CO3O4 NANORODS ; SOLVOTHERMAL DECOMPOSITION ; SELECTIVE SYNTHESIS ; THERMAL-CONVERSION ; CRYSTAL-STRUCTURE ; BRUCITE-LIKE ; CARBONATE
AbstractCobalt hydroxycarbonate nanorods are prepared by precipitation of cobalt acetate with sodium carbonate in ethylene glycol. Structural and chemical analyses of the intermediate phases during the precipitation and aging process revealed that amorphous cobalt hydroxide acetate is formed at the initial stage where ethylene glycol acts as a simple solvent and a coordinating agent. With the slow addition of sodium carbonate, carbonate anions are gradually intercalated into the interlayers by replacing the acetate and hydroxyl anions. This anion-exchange process induces a dissolution-recrystallization process in which ethylene glycol serves as a rate-controlling agent, producing rod-like cobalt hydroxide carbonate. During the aging process, ethylene glycol gradually incorporates into the structure to replace the carbonate and acetate anions; the interlayer structure is collapsed, and the nanorod-shape turns into thin crimped sheets. Co(3)O(4) nanorods with a diameter of about 10 nm and a length of 200-300 nm are then obtained by calcination of the nanorod-shaped cobalt hydroxycarbonate precursor. This spontaneous shape transformation from the precursor to the oxide is attributed to the unique thermal stability of the cobalt hydroxycarbonate nanorods with the presence of ethylene glycol and acetate anions in the interlayers. The Co(3)O(4) nanorods show a much superior catalytic activity for CO oxidation to the conventional spherical Co(3)O(4) nanoparticles, clearly demonstrating the morphology-dependent nanocatalysis.
Language英语
URL查看原文
WOS IDWOS:000274269700022
Citation statistics
Cited Times:54[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/103357
Collection中国科学院大连化学物理研究所
Corresponding AuthorShen WJ(申文杰)
Affiliation1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
Recommended Citation
GB/T 7714
Xie, Xiaowei,Shang, Panju,Liu, Zhiquan,et al. Synthesis of Nanorod-Shaped Cobalt Hydroxycarbonate and Oxide with the Mediation of Ethylene Glycol[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2010,114(5):2116-2123.
APA Xie, Xiaowei.,Shang, Panju.,Liu, Zhiquan.,Lv, Yongge.,Li, Yong.,...&申文杰.(2010).Synthesis of Nanorod-Shaped Cobalt Hydroxycarbonate and Oxide with the Mediation of Ethylene Glycol.JOURNAL OF PHYSICAL CHEMISTRY C,114(5),2116-2123.
MLA Xie, Xiaowei,et al."Synthesis of Nanorod-Shaped Cobalt Hydroxycarbonate and Oxide with the Mediation of Ethylene Glycol".JOURNAL OF PHYSICAL CHEMISTRY C 114.5(2010):2116-2123.
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