Preparation and Characterization of ZnO Nanorods, Nanowalls, and Nanochains

In this study, ZnO nanowires are synthesized via ZnO nanorods at low temperature by using zinc acetate dehydrate and polyvinylpyrrolidone as precursor and capping, respectively. We use chemical solution method for synthesis of ZnO nanowires. Samples are characterized by means of scanning electron microscopy and X-ray diffraction. First, the nanorods are prepared at 300°C temperature, and then they are put into the furnace under air atmosphere at 450°C for 2 h. It is observed that nanowires with 20 nm diameter are produced. Photoluminescence spectra of nanorods and nanowires are compared. It shows that intensity of ultraviolet peak in the nanowires decreases but in contrast the intensity of green emission part increases. This is because, the surface effects such as oxygen vacancies increase in the structures of ZnO .

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Synthesis and characterization of chemically deposited ZnO nanorods for NO2 gas sensing applications

2015 2nd International Symposium on Physics and Technology of Sensors (ISPTS) ◽

10.1109/ispts.2015.7220121 ◽

2015 ◽

Author(s):

Sharad A. Vanalakar ◽

Sagar A. Vhanalakar ◽

Vithoba L. Patil ◽

Namdev S. Harale ◽

Bharat B. Kale ◽

...

Keyword(s):

Gas Sensing ◽

Zno Nanorods ◽

Synthesis And Characterization ◽

Sensing Applications

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Synthesis and characterization of conducting polyaniline nanocomposites containing ZnO nanorods

Progress in Natural Science Materials International ◽

10.1016/j.pnsc.2012.07.002 ◽

2012 ◽

Vol 22 (4) ◽

pp. 273-280 ◽

Cited By ~ 228

Author(s):

Amir Mostafaei ◽

Ashkan Zolriasatein

Keyword(s):

Zno Nanorods ◽

Synthesis And Characterization ◽

Conducting Polyaniline

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Influence of pyrolytic seeds on ZnO nanorod growth onto rigid substrates for photocatalytic abatement of Escherichia coli in water

Water Science & Technology Water Supply ◽

10.2166/ws.2014.068 ◽

2014 ◽

Vol 14 (6) ◽

pp. 1087-1094 ◽

Cited By ~ 2

Author(s):

Luis Sanchez ◽

Lucas Guz ◽

Pilar García ◽

Silvia Ponce ◽

Silvia Goyanes ◽

...

Keyword(s):

Escherichia Coli ◽

Antibacterial Activity ◽

Zno Nanorods ◽

Water Disinfection ◽

Acetate Solution ◽

Ethanol Mixture ◽

E Coli ◽

The Relationship ◽

Nanorod Growth

ZnO nanorods (ZnO NRs) were grown on ZnO seeded fluorine doped tin oxide (FTO) substrates at low temperatures (90 °C) from Zn2+ precursors in alkaline aqueous solution. The ZnO seeds were deposited on the FTO substrate heated at 350 °C by spray pyrolysis of a zinc acetate solution in a water ethanol mixture. The structure of seeds was tuned by the ethanol water ratio, Γ, which controls the solvent evaporation rate of drops impinging the substrate. The relationship between the microstructure and optical properties of the ZnO NR films and the photocatalytic antibacterial activity for Escherichia coli abatement, was determined through a detailed characterization of the material. The higher photocatalytic antibacterial activity was performed by ZnO NR films grown on seeds deposited from solutions with Γ in the 0.0–0.03 range. With these films, the population of viable E. coli dropped more than six orders, from 8 × 108 to 4 × 102 CFU. These results show the potential of these materials in water disinfection.

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