Oxidation Mechanism of Nickel Oxide/Carbon Nanotube Composite

被引：10

作者：

Kim, Tae-Hoon ^{[1
]}

Park, Min-Ho ^{[1
]}

Ryu, Jiho ^{[2
]}

Yang, Cheol-Woong ^{[1
]}

机构：

[1] Sungkyunkwan Univ, Sch Adv Mat Sci & Engn, Suwon 440746, Gyeonggi Do, South Korea

[2] Ajou Motor Coll, Dept Automobile Dev, Boryeong 355769, South Korea

来源：

MICROSCOPY AND MICROANALYSIS | 2013年 / 19卷

基金：

新加坡国家研究基金会;

关键词：

oxidation mechanism; NiO; CNT; composite; in situ heating; TEM; TGA; Raman spectroscopy; MULTIWALLED CARBON NANOTUBES; OXIDE;

D O I：

10.1017/S143192761301266X

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The oxidation mechanism and thermal stability of nickel oxide (NiO)/carbon nanotube (CNT) composites were investigated by examining composites with different NiO contents by thermogravimetric analysis and transmission electron microscopy (TEM). NiO acts as a catalyst in the oxidation of CNT in the composite. CNTs can be oxidized, even in a vacuum, by reducing NiO to nickel at temperatures lower than the normal oxidation temperature of CNTs. This phase transition was confirmed directly by in situ heating TEM observations. In air, reduction by CNT occurs simultaneously with reoxidation by gaseous O-2 molecules, and NiO maintains its phase. The thermal stability decreased with increasing NiO content because of defects in the CNT generated by the NiO loading.

引用

页码：202 / 206

页数：5

共 20 条

[1] CARBON NANOTUBES AS REMOVABLE TEMPLATES FOR METAL-OXIDE NANOCOMPOSITES AND NANOSTRUCTURES
AJAYAN, PM
STEPHAN, O
REDLICH, P
COLLIEX, C
[J]. NATURE, 1995, 375 (6532) : 564 - 567
[2] Catalytic effect of metal oxides on the oxidation resistance in carbon nanotube-inorganic hybrids
Aksel, S.
Eder, D.
[J]. JOURNAL OF MATERIALS CHEMISTRY, 2010, 20 (41) : 9149 - 9154
[3] Carbon-based electronics
Avouris, Phaedon
Chen, Zhihong
Perebeinos, Vasili
[J]. NATURE NANOTECHNOLOGY, 2007, 2 (10) : 605 - 615
[4] Effect of thermal treatment on the structure of multi-walled carbon nanotubes
Behler, K.
Osswald, S.
Ye, H.
Dimovski, S.
Gogotsi, Y.
[J]. JOURNAL OF NANOPARTICLE RESEARCH, 2006, 8 (05) : 615 - 625
[5] Thermal decomposition of nickel nitrate hexahydrate, Ni(NO3)2.6H2O in comparison to Co(NO3)2.6H2O and Ca(NO3)2.4H2O
Brockner, Wolfgang
Ehrhardt, Claus
Gjikaj, Mimoza
[J]. THERMOCHIMICA ACTA, 2007, 456 (01) : 64 - 68
[6] Observations of the D-band feature in the Raman spectra of carbon nanotubes -: art. no. 073403
Brown, SDM
Jorio, A
Dresselhaus, MS
Dresselhaus, G
[J]. PHYSICAL REVIEW B, 2001, 64 (07):
[7] Ellingham H. J. T., 1944, Chem. Ind, V63, P125, DOI [10.1002/jctb.5000630501, DOI 10.1002/JCTB.5000630501]
[8] He K.X., 2006, J ELECTROCHEM SOC, V153, P1568, DOI DOI 10.1149/1.2208735
[9] HELICAL MICROTUBULES OF GRAPHITIC CARBON
IIJIMA, S
[J]. NATURE, 1991, 354 (6348) : 56 - 58
[10] Loading Behavior of Pt Nanoparticles on the Surface of Multiwalled Carbon Nanotubes Having Defects Formed via Microwave Treatment
Lee, Y. I.
Park, M. H.
Bae, J. H.
Lee, S. E.
Song, K. W.
Kim, T. H.
Lee, Y. H.
Yang, C. W.
[J]. JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, 2011, 11 (01) : 479 - 483

← 1 2 →