Limits...
Synthesis of ZnGa(2)O(4) Hierarchical Nanostructure by Au Catalysts Induced Thermal Evaporation.

Chen XM, Fei GT, Yan J, Zhu YQ, De Zhang L - Nanoscale Res Lett (2010)

Bottom Line: In this paper, ZnGa(2)O(4) hierarchical nanostructures with comb-like morphology are fabricated by a simple two-step chemical vapor deposition (CVD) method: first, the Ga(2)O(3) nanowires were synthesized and employed as templates for the growth of ZnGa(2)O(4) nanocombs; then, the as-prepared Ga(2)O(3) nanowires were reacted with ZnO vapor to form ZnGa(2)O(4) nanocombs.The as-prepared ZnGa(2)O(4) nanocombs were highly crystallized with cubic spinel structure.From the photoluminescence (PL) spectrum, a broad band emission in the visible light region was observed of as-prepared ZnGa(2)O(4) nanocombs, which make it promising application as an optical material.

View Article: PubMed Central - HTML - PubMed

Affiliation: Key Laboratory of Materials Physics and Anhui Key Laboratory of Nanomaterials and Nanotechnology, Institute of Solid State Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, 230031 Hefei, People's Republic of China.

ABSTRACT
In this paper, ZnGa(2)O(4) hierarchical nanostructures with comb-like morphology are fabricated by a simple two-step chemical vapor deposition (CVD) method: first, the Ga(2)O(3) nanowires were synthesized and employed as templates for the growth of ZnGa(2)O(4) nanocombs; then, the as-prepared Ga(2)O(3) nanowires were reacted with ZnO vapor to form ZnGa(2)O(4) nanocombs. Before the reaction, the Au nanoparticles were deposited on the surfaces of Ga(2)O(3) nanowires and used as catalysts to control the teeth growth of ZnGa(2)O(4) nanocombs. The as-prepared ZnGa(2)O(4) nanocombs were highly crystallized with cubic spinel structure. From the photoluminescence (PL) spectrum, a broad band emission in the visible light region was observed of as-prepared ZnGa(2)O(4) nanocombs, which make it promising application as an optical material.

No MeSH data available.


Characterization of comb-like ZnGa2O4 nanostructures: a low-magnification FE-SEM image; b high-magnification FE-SEM image; c XRD pattern of as-prepared ZnGa2O4 nanostructures
© Copyright Policy
Related In: Results  -  Collection


getmorefigures.php?uid=PMC2926889&req=5

Figure 2: Characterization of comb-like ZnGa2O4 nanostructures: a low-magnification FE-SEM image; b high-magnification FE-SEM image; c XRD pattern of as-prepared ZnGa2O4 nanostructures

Mentions: Figure 2 shows the morphologies and crystalline structure characterization of the as-synthesized ZnGa2O4 products using FE-SEM and XRD. Figures 2a and 2b show the low- and high-magnification FE-SEM images of as-prepared products, which reveal that a large amount hierarchical nanostructures with comb-like morphologies are formed. The nanoteeth on the backbones in our fabricated samples are not as densely aligned as that in other nanocomb materials. The nanocombs are several tens of micrometers long with the teeth about 200 nm in length, and the teeth are orderly arranged on one side of nanocomb. The FE-SEM image shows clearly that there is a nanoparticle on the tip of each tooth. The particle was confirmed to be Au by EDS spectra in the following TEM analysis. Figure 2c shows the corresponding XRD pattern, most of the main diffraction peaks can be indexed to cubic spinel structure ZnGa2O4 (JCPDS: 38-1240) with lattice constant of a = 8.334 Å, except the peaks from Si(111) substrate and Au nanoparticles (111) diffraction.


Synthesis of ZnGa(2)O(4) Hierarchical Nanostructure by Au Catalysts Induced Thermal Evaporation.

Chen XM, Fei GT, Yan J, Zhu YQ, De Zhang L - Nanoscale Res Lett (2010)

Characterization of comb-like ZnGa2O4 nanostructures: a low-magnification FE-SEM image; b high-magnification FE-SEM image; c XRD pattern of as-prepared ZnGa2O4 nanostructures
© Copyright Policy
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC2926889&req=5

Figure 2: Characterization of comb-like ZnGa2O4 nanostructures: a low-magnification FE-SEM image; b high-magnification FE-SEM image; c XRD pattern of as-prepared ZnGa2O4 nanostructures
Mentions: Figure 2 shows the morphologies and crystalline structure characterization of the as-synthesized ZnGa2O4 products using FE-SEM and XRD. Figures 2a and 2b show the low- and high-magnification FE-SEM images of as-prepared products, which reveal that a large amount hierarchical nanostructures with comb-like morphologies are formed. The nanoteeth on the backbones in our fabricated samples are not as densely aligned as that in other nanocomb materials. The nanocombs are several tens of micrometers long with the teeth about 200 nm in length, and the teeth are orderly arranged on one side of nanocomb. The FE-SEM image shows clearly that there is a nanoparticle on the tip of each tooth. The particle was confirmed to be Au by EDS spectra in the following TEM analysis. Figure 2c shows the corresponding XRD pattern, most of the main diffraction peaks can be indexed to cubic spinel structure ZnGa2O4 (JCPDS: 38-1240) with lattice constant of a = 8.334 Å, except the peaks from Si(111) substrate and Au nanoparticles (111) diffraction.

Bottom Line: In this paper, ZnGa(2)O(4) hierarchical nanostructures with comb-like morphology are fabricated by a simple two-step chemical vapor deposition (CVD) method: first, the Ga(2)O(3) nanowires were synthesized and employed as templates for the growth of ZnGa(2)O(4) nanocombs; then, the as-prepared Ga(2)O(3) nanowires were reacted with ZnO vapor to form ZnGa(2)O(4) nanocombs.The as-prepared ZnGa(2)O(4) nanocombs were highly crystallized with cubic spinel structure.From the photoluminescence (PL) spectrum, a broad band emission in the visible light region was observed of as-prepared ZnGa(2)O(4) nanocombs, which make it promising application as an optical material.

View Article: PubMed Central - HTML - PubMed

Affiliation: Key Laboratory of Materials Physics and Anhui Key Laboratory of Nanomaterials and Nanotechnology, Institute of Solid State Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, 230031 Hefei, People's Republic of China.

ABSTRACT
In this paper, ZnGa(2)O(4) hierarchical nanostructures with comb-like morphology are fabricated by a simple two-step chemical vapor deposition (CVD) method: first, the Ga(2)O(3) nanowires were synthesized and employed as templates for the growth of ZnGa(2)O(4) nanocombs; then, the as-prepared Ga(2)O(3) nanowires were reacted with ZnO vapor to form ZnGa(2)O(4) nanocombs. Before the reaction, the Au nanoparticles were deposited on the surfaces of Ga(2)O(3) nanowires and used as catalysts to control the teeth growth of ZnGa(2)O(4) nanocombs. The as-prepared ZnGa(2)O(4) nanocombs were highly crystallized with cubic spinel structure. From the photoluminescence (PL) spectrum, a broad band emission in the visible light region was observed of as-prepared ZnGa(2)O(4) nanocombs, which make it promising application as an optical material.

No MeSH data available.