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Morphological variations in cadmium sulfide nanocrystals without phase transformation.

Dhage SR, Colorado HA, Hahn T - Nanoscale Res Lett (2011)

Bottom Line: Environmentally stable and highly crystalline CdS nanorods have been obtained via a chemical bath method.The prepared CdS nanorods have been characterized by X-ray powder diffraction, TEM, UV-Vis spectroscopy, and photoluminescence spectroscopy.The importance of this phenomenon is vital for the potential application for CdS such as smart materials.

View Article: PubMed Central - HTML - PubMed

Affiliation: Mechanical and Aerospace Engineering Department, University of California, Los Angeles, CA 90095, USA. sanjay.dhage@gmail.com.

ABSTRACT
A very novel phenomenon of morphological variations of cadmium sulfide (CdS) nanorods under the transmission electron microscopy (TEM) beam was observed without structural phase transformation. Environmentally stable and highly crystalline CdS nanorods have been obtained via a chemical bath method. The energy of the TEM beam is believed to have a significant influence on CdS nanorods and may melt and transform them into smaller nanowires. Morphological variations without structural phase transformation are confirmed by recording selected area electron diffraction at various stages. The prepared CdS nanorods have been characterized by X-ray powder diffraction, TEM, UV-Vis spectroscopy, and photoluminescence spectroscopy. The importance of this phenomenon is vital for the potential application for CdS such as smart materials.

No MeSH data available.


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XRD pattern of the as-prepared CdS nanorods.
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Figure 1: XRD pattern of the as-prepared CdS nanorods.

Mentions: The powder XRD pattern of the as-prepared CdS nanorods is shown in Figure 1. The (111), (220), and (311) peaks of the cubic zinc blend structure appear clearly in the pattern and match the data of JCPDS-10-0454. Although the peak (111) of the cubic structure is similar to the (002) peak of the hexagonal structure, the other peaks of the hexagonal CdS do not appear. Thus, it is more likely that the structure of the films was predominantly cubic, as similarly stated in other reports [19,20]. The intensive diffraction peaks in this pattern can be perfectly indexed to the cubic CdS with a lattice constant of 5.81 Å. The XRD analysis revealed that the as-synthesized product is a crystalline CdS with a cubic zinc blend crystal structure.


Morphological variations in cadmium sulfide nanocrystals without phase transformation.

Dhage SR, Colorado HA, Hahn T - Nanoscale Res Lett (2011)

XRD pattern of the as-prepared CdS nanorods.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3211837&req=5

Figure 1: XRD pattern of the as-prepared CdS nanorods.
Mentions: The powder XRD pattern of the as-prepared CdS nanorods is shown in Figure 1. The (111), (220), and (311) peaks of the cubic zinc blend structure appear clearly in the pattern and match the data of JCPDS-10-0454. Although the peak (111) of the cubic structure is similar to the (002) peak of the hexagonal structure, the other peaks of the hexagonal CdS do not appear. Thus, it is more likely that the structure of the films was predominantly cubic, as similarly stated in other reports [19,20]. The intensive diffraction peaks in this pattern can be perfectly indexed to the cubic CdS with a lattice constant of 5.81 Å. The XRD analysis revealed that the as-synthesized product is a crystalline CdS with a cubic zinc blend crystal structure.

Bottom Line: Environmentally stable and highly crystalline CdS nanorods have been obtained via a chemical bath method.The prepared CdS nanorods have been characterized by X-ray powder diffraction, TEM, UV-Vis spectroscopy, and photoluminescence spectroscopy.The importance of this phenomenon is vital for the potential application for CdS such as smart materials.

View Article: PubMed Central - HTML - PubMed

Affiliation: Mechanical and Aerospace Engineering Department, University of California, Los Angeles, CA 90095, USA. sanjay.dhage@gmail.com.

ABSTRACT
A very novel phenomenon of morphological variations of cadmium sulfide (CdS) nanorods under the transmission electron microscopy (TEM) beam was observed without structural phase transformation. Environmentally stable and highly crystalline CdS nanorods have been obtained via a chemical bath method. The energy of the TEM beam is believed to have a significant influence on CdS nanorods and may melt and transform them into smaller nanowires. Morphological variations without structural phase transformation are confirmed by recording selected area electron diffraction at various stages. The prepared CdS nanorods have been characterized by X-ray powder diffraction, TEM, UV-Vis spectroscopy, and photoluminescence spectroscopy. The importance of this phenomenon is vital for the potential application for CdS such as smart materials.

No MeSH data available.


Related in: MedlinePlus