Formation of Ni3C nanocrystals by thermolysis of nickel acetylacetonate in oleylamine:: Characterization using hard X-ray photoelectron spectroscopy

被引：167

作者：

Goto, Yuji ^{[1
]}

Taniguchi, Kota ^{[1
]}

Omata, Takahisa ^{[1
]}

Otsuka-Yao-Matsuo, Shinya ^{[1
]}

Ohashi, Naoki ^{[2
]}

Ueda, Shigenori ^{[3
]}

Yoshikawa, Hideki ^{[3
]}

Yamashita, Yoshiyuki ^{[3
]}

Oohashi, Hirofumi ^{[3
]}

Kobayashi, Keisuke ^{[3
]}

机构：

[1] Osaka Univ, Grad Sch Engn, Div Mat Sci & Mfg, Suita, Osaka 5650871, Japan

[2] Natl Inst Mat Sci, Int Ctr Nanoarchitecton MANA, Tsukuba, Ibaraki 3050044, Japan

[3] Natl Inst Mat Sci, Dept Mat Infrastruct, SPring 8, Sayo, Hyogo 6795148, Japan

来源：

CHEMISTRY OF MATERIALS | 2008年 / 20卷 / 12期

关键词：

D O I：

10.1021/cm703644x

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Nickel acetylacetonate was thermally decomposed in oleylamine under inert atmosphere. Nanocrystals of two cubic phases and a hexagonal phase appeared. The phases were identified using X-ray diffraction, laboratory X-ray photoelectron spectroscopy (XPS), and hard-X-ray photoelectron spectroscopy (HX-PES). The hexagonal phase was a nickel carbide, Ni3C, which had been often identified as a hexagonal close-packed metallic nickel. One cubic phase was a face-centered metallic nickel, and the other cubic phase was proposed as a novel cubic nickel carbide, which was characterized as an intermediate product of the carbidization of metallic face-centered cubic Ni to the hexagonal nickel carbide.

引用

页码：4156 / 4160

页数：5

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