Limits...
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.


Related in: MedlinePlus

In situprocess for depositing Ag NPs on ZnO nanorods which grew on a PDMS substrate.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
getmorefigures.php?uid=PMC4385129&req=5

Fig1: In situprocess for depositing Ag NPs on ZnO nanorods which grew on a PDMS substrate.

Mentions: As shown in Figure 1, the ZnO NR grown on PDMS is exposed under a UV light (hv) which is larger than the band gap of ZnO (Eg = 3.2 eV), leading to electron-hole pairs. At the present of C2H5OH, the holes (h+) are consumed to produce ethoxy radicals C2H4OH. Meanwhile, the accumulated electrons (e−) contribute to reduce AgNO3 to form Ag nanoparticles in situ on the surface of ZnO nanorods [23,24]. The final products were resined by ethanol and DI water three times and dried in a vacuum oven.Figure 1


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)

In situprocess for depositing Ag NPs on ZnO nanorods which grew on a PDMS substrate.
© Copyright Policy - open-access
Related In: Results  -  Collection

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

Fig1: In situprocess for depositing Ag NPs on ZnO nanorods which grew on a PDMS substrate.
Mentions: As shown in Figure 1, the ZnO NR grown on PDMS is exposed under a UV light (hv) which is larger than the band gap of ZnO (Eg = 3.2 eV), leading to electron-hole pairs. At the present of C2H5OH, the holes (h+) are consumed to produce ethoxy radicals C2H4OH. Meanwhile, the accumulated electrons (e−) contribute to reduce AgNO3 to form Ag nanoparticles in situ on the surface of ZnO nanorods [23,24]. The final products were resined by ethanol and DI water three times and dried in a vacuum oven.Figure 1

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