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Ag nanoparticles-decorated ZnO nanorod array on a mechanical flexible substrate with enhanced optical and antimicrobial properties.

Chen Y, Tse WH, Chen L, Zhang J - Nanoscale Res Lett (2015)

Bottom Line: As compared to the bare ZnO NRs, the heterostructured Ag-ZnO nanorod array shows enhanced ultraviolet (UV) absorption at 440 nm, and significant emission in the visible region (λem = 542 nm).In addition, the antimicrobial efficiency of Ag-ZnO heterostructured nanorod array shows obvious improvement as compared to bare ZnO nanorod array.No significant toxic effect is imposed on the cells.

View Article: PubMed Central - PubMed

Affiliation: Department of Chemical & Biochemical Engineering, University of Western Ontario, 1151 Richmond Street, London, Ontario Canada N6A 5B9.

ABSTRACT
Heteronanostructured zinc oxide nanorod (ZnO NR) array are vertically grown on polydimethylsiloxane (PDMS) through a hydrothermal method followed by an in situ deposition of silver nanoparticles (Ag NPs) through a photoreduction process. The Ag-ZnO heterostructured nanorods on PDMS are measured with an average diameter of 160 nm and an average length of 2 μm. ZnO NRs measured by high-resolution transmission electron microscope (HRTEM) shows highly crystalline with a lattice fringe of 0.255 nm, which corresponds to the (0002) planes in ZnO crystal lattice. The average diameter of the Ag NPs in situ deposited on the ZnO NRs is estimated at 22 ± 2 nm. As compared to the bare ZnO NRs, the heterostructured Ag-ZnO nanorod array shows enhanced ultraviolet (UV) absorption at 440 nm, and significant emission in the visible region (λem = 542 nm). In addition, the antimicrobial efficiency of Ag-ZnO heterostructured nanorod array shows obvious improvement as compared to bare ZnO nanorod array. The cytotoxicity of ZnO nanorod array with and without Ag NPs was studied by using 3 T3 mouse fibroblast cell line. No significant toxic effect is imposed on the cells.

No MeSH data available.


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UV-visible spectra of ZnO and Ag-ZnO nanorod arrays on PDMS.
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Fig6: UV-visible spectra of ZnO and Ag-ZnO nanorod arrays on PDMS.

Mentions: Both optical absorption and luminescent emission of the heterostructured Ag-ZnO nanorods on PDMS were studied. Figure 6 shows the UV-visible absorption spectra of ZnO nanorod array on PDMS with and without the deposition of Ag NPs. The bare ZnO nanorod array on PDMS exhibits the typical UV absorption peak at 377 nm [1-3]. Whereas a new broad absorption band centering at 440 nm is observed to the Ag-ZnO nanorod array on PDMS. We also developed pure Ag NPs with 20 ± 5 nm in diameter deposited on PDMS. The surface plasmon resonance (SPR) of the pure Ag NPs on PDMS is around 430 nm (Additional file 1). The SPR shift can be explained by the following equation [29]:Figure 6


Ag nanoparticles-decorated ZnO nanorod array on a mechanical flexible substrate with enhanced optical and antimicrobial properties.

Chen Y, Tse WH, Chen L, Zhang J - Nanoscale Res Lett (2015)

UV-visible spectra of ZnO and Ag-ZnO nanorod arrays on PDMS.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4385129&req=5

Fig6: UV-visible spectra of ZnO and Ag-ZnO nanorod arrays on PDMS.
Mentions: Both optical absorption and luminescent emission of the heterostructured Ag-ZnO nanorods on PDMS were studied. Figure 6 shows the UV-visible absorption spectra of ZnO nanorod array on PDMS with and without the deposition of Ag NPs. The bare ZnO nanorod array on PDMS exhibits the typical UV absorption peak at 377 nm [1-3]. Whereas a new broad absorption band centering at 440 nm is observed to the Ag-ZnO nanorod array on PDMS. We also developed pure Ag NPs with 20 ± 5 nm in diameter deposited on PDMS. The surface plasmon resonance (SPR) of the pure Ag NPs on PDMS is around 430 nm (Additional file 1). The SPR shift can be explained by the following equation [29]:Figure 6

Bottom Line: As compared to the bare ZnO NRs, the heterostructured Ag-ZnO nanorod array shows enhanced ultraviolet (UV) absorption at 440 nm, and significant emission in the visible region (λem = 542 nm).In addition, the antimicrobial efficiency of Ag-ZnO heterostructured nanorod array shows obvious improvement as compared to bare ZnO nanorod array.No significant toxic effect is imposed on the cells.

View Article: PubMed Central - PubMed

Affiliation: Department of Chemical & Biochemical Engineering, University of Western Ontario, 1151 Richmond Street, London, Ontario Canada N6A 5B9.

ABSTRACT
Heteronanostructured zinc oxide nanorod (ZnO NR) array are vertically grown on polydimethylsiloxane (PDMS) through a hydrothermal method followed by an in situ deposition of silver nanoparticles (Ag NPs) through a photoreduction process. The Ag-ZnO heterostructured nanorods on PDMS are measured with an average diameter of 160 nm and an average length of 2 μm. ZnO NRs measured by high-resolution transmission electron microscope (HRTEM) shows highly crystalline with a lattice fringe of 0.255 nm, which corresponds to the (0002) planes in ZnO crystal lattice. The average diameter of the Ag NPs in situ deposited on the ZnO NRs is estimated at 22 ± 2 nm. As compared to the bare ZnO NRs, the heterostructured Ag-ZnO nanorod array shows enhanced ultraviolet (UV) absorption at 440 nm, and significant emission in the visible region (λem = 542 nm). In addition, the antimicrobial efficiency of Ag-ZnO heterostructured nanorod array shows obvious improvement as compared to bare ZnO nanorod array. The cytotoxicity of ZnO nanorod array with and without Ag NPs was studied by using 3 T3 mouse fibroblast cell line. No significant toxic effect is imposed on the cells.

No MeSH data available.


Related in: MedlinePlus