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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)
刊名JOURNAL OF PHYSICAL CHEMISTRY C
2010-02-11
DOI10.1021/jp911011g
114期:5页:2116-2123
收录类别SCI
文章类型Article
部门归属5
项目归属501
产权排名1;1
WOS标题词Science & Technology ; Physical Sciences ; Technology
类目[WOS]Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
研究领域[WOS]Chemistry ; Science & Technology - Other Topics ; Materials Science
关键词[WOS]LAYERED DOUBLE HYDROXIDES ; HYDROTALCITE-LIKE COMPOUNDS ; ANION-EXCHANGE REACTIONS ; CO3O4 NANORODS ; SOLVOTHERMAL DECOMPOSITION ; SELECTIVE SYNTHESIS ; THERMAL-CONVERSION ; CRYSTAL-STRUCTURE ; BRUCITE-LIKE ; CARBONATE
英文摘要Cobalt 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.
语种英语
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WOS记录号WOS:000274269700022
引用统计
被引频次:51[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/321008/103357
专题中国科学院大连化学物理研究所
通讯作者Shen WJ(申文杰)
作者单位1.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
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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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