Solvent dependent growth of fibrous and non-fibrous nanocrystalline thin films of ZnO

Thakur, Vikas; Verma, U. P.; Rajaram, P.

doi:10.1007/s10971-013-3005-x

Cited by 7 publications

(3 citation statements)

References 58 publications

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“…The films were prepared by dip-coating on a freshly cleaned (by peroxosulfuric acid) microscopic plate. After air-drying, the plate was calcined in a furnace at 300 °C for 2 h. 48 Seed/Growth Method. The nanocolumnar ZnO films were prepared by chemical bath deposition on a ZnO seeded layer similar to the procedure described earlier.…”

Section: ■ Experimental Sectionmentioning

confidence: 99%

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High Photocatalytic Activity of Transparent Films Composed of ZnO Nanosheets

et al. 2014

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Nanometric thin films were prepared by dip-coating and inkjet printing ZnO nanosheets on glass plates. The side-by-side alignment of the ZnO nanosheets on the substrate resulted in thin, transparent, oriented ZnO surfaces with the high-energy {001} facets exposed. The method of nanosheet deposition affected the film morphology; the dip-coated films were very smooth and nonporous, while the inkjet-printed films were rough and porous with the estimated void volume approximately 60-70% of the total film volume. The first-order rate constants for the photocatalytic degradation of 4-chlorophenol on the nanosheet-based films were approximately 2 times larger than those on nanocolumnar ZnO films or ZnO films prepared by the sol-gel technique. We attribute the high photocatalytic activity of the ZnO nanosheets to the fact that their {001} facets were predominantly exposed to the oxidized substrate. This surface arrangement and the simplicity of fabricating the ZnO nanosheet-based films make them promising for the construction of optical devices and dye-sensitized solar cells.

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Section: ■ Experimental Sectionmentioning

confidence: 99%

“…The films were prepared by dip-coating on a freshly cleaned (by peroxosulfuric acid) microscopic plate. After air-drying, the plate was calcined in a furnace at 300 °C for 2 h …”

Section: Experimental Sectionmentioning

confidence: 99%

High Photocatalytic Activity of Transparent Films Composed of ZnO Nanosheets

et al. 2014

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“…Small peaks of (100) and (002) are observed and indentified as ZnO peaks [8]. Small intensity of the peaks indicates the formation of ultra small structures.…”

Section: Resultsmentioning

confidence: 99%

Growth of Blue Luminescent Cu Doped ZnO Nanowires by Modified Sol-Gel

Gahlaut

Kumar

Pandey

et al. 2015

Springer Proceedings in Physics

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Copper doped ultra small highly luminescent ZnO nanowires were obtained by modified sol gel route. The zinc acetate mixed with ethanol was used as precursor for the synthesis. Copper doping was done by adding various concentrations of copper chloride. Gel was obtained by magnetically stirring the mixture at 60°C for 2-3 h and then keeping it for another 24 h for aging. The particles obtained were characterized by XRD, AFM, Optical transmission and photoluminescence studies. X ray diffractogram peak is identified for ZnO. AFM micrograph shows particle alignment in linear direction and formation of nanowires on increasing Cu concentration. The optical band gap of copper doped ZnO shift from 3.2 to 4.76 eV. This strong shift confirms the ultra small size of particles. In PL studies, Undoped ZnO nanostructures exhibit a near-band-edge UV emission at 360 nm and a broad defect related blue emission at 440 nm. Addition of Copper improves the photoluminescence peak in UV region with an additional peak observed in middle UV region at 230 nm. Yellow green or blue makes the nanowires suitable for light emitting devices and biological sensing devices.

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