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The surface condition effect of Cu2O flower/grass-like nanoarchitectures grown on Cu foil and Cu film.

Hu L, Ju Y, Hosoi A, Tang Y - Nanoscale Res Lett (2013)

Bottom Line: The FGLNAs are approximately 3.5 to 12 μm in size, and their petals are approximately 50 to 950 nm in width.The high compressive stress caused by a large oxide volume in the Cu2O layer on the specimen surface played an important role in the growth of FGLNAs.PACS: 81.

View Article: PubMed Central - HTML - PubMed

Affiliation: Department of Mechanical Science and Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan. ju@mech.Nagoya-u.ac.jp.

ABSTRACT
Cu2O flower/grass-like nanoarchitectures (FGLNAs) were fabricated directly on two category specimens of Cu foils and Cu film using thermal oxidation method. The FGLNAs are approximately 3.5 to 12 μm in size, and their petals are approximately 50 to 950 nm in width. The high compressive stress caused by a large oxide volume in the Cu2O layer on the specimen surface played an important role in the growth of FGLNAs. The effects of surface conditions, such as the surface stresses, grain size, and surface roughness of Cu foil and Cu film specimens, on the FGLNA growth were discussed in detail. PACS: 81. Materials science; 81.07.-b Nanoscale materials and structures: fabrication and characterization; 81.16.Hc Catalytic methods.

No MeSH data available.


Related in: MedlinePlus

EDX spectra of FGLNAs. The FGLNAs were grown on the polished Cu foil specimen (400 grit) heated at 240°C for 2 h.
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Figure 3: EDX spectra of FGLNAs. The FGLNAs were grown on the polished Cu foil specimen (400 grit) heated at 240°C for 2 h.

Mentions: Figure 3 shows EDX analysis of the FGLNAs grown on the 400-grit polished Cu foil specimen heated at 240°C for 2 h. It indicates that the FGLNAs are mainly composed of the Cu element (30.30%) and oxygen element (69.27%). We also obtained similar EDX results for the other specimens. As shown in the XRD spectrum in Figure 4, orientations 111, 200, 311, etc. of Cu2O indicate that the FGLNAs are composed of Cu2O. Similar results of the XRD spectra were also obtained from the other specimens. As shown in the XRD spectrum, Ni is not oxidized. The reason is that the catalyst we used here is high-temperature resistance Ni; therefore, after heating, it continues to maintain as Ni.


The surface condition effect of Cu2O flower/grass-like nanoarchitectures grown on Cu foil and Cu film.

Hu L, Ju Y, Hosoi A, Tang Y - Nanoscale Res Lett (2013)

EDX spectra of FGLNAs. The FGLNAs were grown on the polished Cu foil specimen (400 grit) heated at 240°C for 2 h.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4231356&req=5

Figure 3: EDX spectra of FGLNAs. The FGLNAs were grown on the polished Cu foil specimen (400 grit) heated at 240°C for 2 h.
Mentions: Figure 3 shows EDX analysis of the FGLNAs grown on the 400-grit polished Cu foil specimen heated at 240°C for 2 h. It indicates that the FGLNAs are mainly composed of the Cu element (30.30%) and oxygen element (69.27%). We also obtained similar EDX results for the other specimens. As shown in the XRD spectrum in Figure 4, orientations 111, 200, 311, etc. of Cu2O indicate that the FGLNAs are composed of Cu2O. Similar results of the XRD spectra were also obtained from the other specimens. As shown in the XRD spectrum, Ni is not oxidized. The reason is that the catalyst we used here is high-temperature resistance Ni; therefore, after heating, it continues to maintain as Ni.

Bottom Line: The FGLNAs are approximately 3.5 to 12 μm in size, and their petals are approximately 50 to 950 nm in width.The high compressive stress caused by a large oxide volume in the Cu2O layer on the specimen surface played an important role in the growth of FGLNAs.PACS: 81.

View Article: PubMed Central - HTML - PubMed

Affiliation: Department of Mechanical Science and Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan. ju@mech.Nagoya-u.ac.jp.

ABSTRACT
Cu2O flower/grass-like nanoarchitectures (FGLNAs) were fabricated directly on two category specimens of Cu foils and Cu film using thermal oxidation method. The FGLNAs are approximately 3.5 to 12 μm in size, and their petals are approximately 50 to 950 nm in width. The high compressive stress caused by a large oxide volume in the Cu2O layer on the specimen surface played an important role in the growth of FGLNAs. The effects of surface conditions, such as the surface stresses, grain size, and surface roughness of Cu foil and Cu film specimens, on the FGLNA growth were discussed in detail. PACS: 81. Materials science; 81.07.-b Nanoscale materials and structures: fabrication and characterization; 81.16.Hc Catalytic methods.

No MeSH data available.


Related in: MedlinePlus