Preparation of ZnO nanowires by electrochemical deposition

Dimova-Malnovska, D.; Andreev, P.; Sendova‐Vassileva, M.; Nichev, H.; Starbova, K.

doi:10.1016/j.egypro.2010.07.010

Cited by 14 publications

(5 citation statements)

References 7 publications

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“…The observation of increased light scattering in ZnO NW structures may, therefore, increase absorption when applied in, for example, DSSC or ETA solar cells 23. The increased light scattering may generate higher diffuse reflectance and light‐trapping effects 24, 25.…”

Section: Resultsmentioning

confidence: 99%

“…On the other hand, in extremely thin absorber (ETA) solar cells the enhancement in light scattering can improve the effective absorption 23. Therefore, previous works have reported improved light scattering in this kind of material 24, 25.…”

Section: Introductionmentioning

confidence: 99%

“…To our knowledge this is the first time these techniques (which independently have led to the highest reported values in DSSC 2) have been combined for ZnO NW preparation. The dependence of the resulting nanostructured material properties with the synthesis conditions are reported and their optical properties are systematically studied, included bandgap energy, Urbach tail, photoluminescence (PL), and light scattering 24, 25. Mean values and dispersion of NW diameters are calculated showing how the NW diameters can be optimized.…”

Section: Introductionmentioning

confidence: 99%

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Zinc‐oxide nanowires electrochemically grown onto sol–gel spin‐coated seed layers

Bojorge

Kent

Téliz

et al. 2011

Physica Status Solidi (a)

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Phone: þ598 2 711 09 05, Fax: þ598 2 711 16 30The electrochemical deposition of ZnO nanowires (NW) was optimized by growing onto a previously deposited seed layer. The ZnO seed layer was prepared by a sol-gel process from different precursor solutions and deposited onto FTO/glass by spin coating. Afterwards, NW were electrochemically grown onto those seed layers. The electrolyte was an aqueous solution of the Zn þ2 precursor (1 mM zinc acetate) and a supporting electrolyte (0.1 M sodium acetate), saturated with bubbling oxygen. The films were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and optical transmittance. The XRD measurements show typical diffraction pattern of ZnO wurtzite structure. The SEM micrographs show the presence of smooth NW with hexagonal sections with diameters ranging from 40 to 250 nm. The optical transmittance reveals the presence of ZnO with bandgap energy between 3.23 and 3.29 eV. These spectra show a monotonically increasing transmittance from the UV into the red part of the spectrum. This feature may be originated in the dispersion of light at the NW and can be used to enhance below-gap absorption.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Zinc‐oxide nanowires electrochemically grown onto sol–gel spin‐coated seed layers

Bojorge

Kent

Téliz

et al. 2011

Physica Status Solidi (a)

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“…This increase in pH allows the precipitation of ZnO on the electrode surface. This method, showed by Izaki et al [32] and Peulon et al [33], was further investigated in many studies [23,34], demonstrating that, by tuning the electrodeposition parameters, it is possible to obtain ZnO with different morphologies such as thin film, self-assembled hexagonal nanorods (NRs), nanofibers, nanoparticles, nanorings and nanowires [35][36][37][38][39][40][41][42][43][44][45][46]. The ability to obtain ZnO in nanostructured form is extremely interesting because nanostructured morphology allows electrodes with higher surface area and thus higher reactivity to be fabricated [47].…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Synthesis of Zinc Oxide Nanostructures on Flexible Substrate and Application as an Electrochemical Immunoglobulin-G Immunosensor

et al. 2022

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Immunoglobulin G (IgG), a type of antibody, represents approximately 75% of serum antibodies in humans, and is the most common type of antibody found in blood circulation. Consequently, the development of simple, fast and reliable systems for IgG detection, which can be achieved using electrochemical sandwich-type immunosensors, is of considerable interest. In this study we have developed an immunosensor for human (H)-IgG using an inexpensive and very simple fabrication method based on ZnO nanorods (NRs) obtained through the electrodeposition of ZnO. The ZnO NRs were treated by electrodepositing a layer of reduced graphene oxide (rGO) to ensure an easy immobilization of the antibodies. On Indium Tin Oxide supported on Polyethylene Terephthalate/ZnO NRs/rGO substrate, the sandwich configuration of the immunosensor was built through different incubation steps, which were all optimized. The immunosensor is electrochemically active thanks to the presence of gold nanoparticles tagging the secondary antibody. The immunosensor was used to measure the current density of the hydrogen development reaction which is indirectly linked to the concentration of H-IgG. In this way the calibration curve was constructed obtaining a logarithmic linear range of 10–1000 ng/mL with a detection limit of few ng/mL and good sensitivity.

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“…This increase in pH allows the precipitation of ZnO on the electrode surface. This method, showed by Izaki et al [28] and Peulon et al [29], was further investigated in many studies [20,30], demontrating that, by tuning the electrodeposition parameters, it is possible to obtain ZnO with different morphologies such as thin film, self-assembled hexagonal nanorods (NRs), nanofibers, nanoparticles, nanorings and nanowires [31][32][33][34][35][36][37][38][39][40][41][42]. The oppertunity of obtaining ZnO in nanostructured form is extremely interesting because the nanostructured morphology allows electrodes with higher surface area and thus higher reactivity to be fabrciated.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Synthesis of Zinc Oxide Nanostructures on Flexible Substrate and Application as an Electrochemical Immunoglobulin-G Immunosensor

Patella¹,

Moukri²,

Regalbuto³

et al. 2021

Preprint

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Immunoglobulin G (IgG), a type of antibody, represents approximately 75% of serum antibodies in humans, and is the most common type of antibody found in blood circulation Consequently, the development of simple, fast and reliable systems for IgG detection are of considerable interest which can be achieved using electrochemical sandwich-type immunosensors. In this study we have developed an immunosensor sub-strate using an inexpensive and very simple fabrication method based on ZnO nanorods obtained through the electrodeposition of ZnO. The ZnO nanorods were treated by electrodepositing a layer of reduced gra-phene oxide to ensure an easy immobilization of the antibodies. On this substrate, the sandwich configura-tion of the immunosensor was built through different incubation steps, that were all optimized. The im-munosensor is electrochemically active thanks to the presence of gold nanoparticles tagging the secondary antibody, therefore it has been used to measure the current density of the hydrogen development reaction which is indirectly linked to the concentration of H-IgG antigens. In this way the calibration curve was constructed obtaining a linear range of 1-100 ng / ml with a detection limit of few ng / mL and good sensi-tivity.

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Preparation of ZnO nanowires by electrochemical deposition

Cited by 14 publications

References 7 publications

Zinc‐oxide nanowires electrochemically grown onto sol–gel spin‐coated seed layers

Zinc‐oxide nanowires electrochemically grown onto sol–gel spin‐coated seed layers

Electrochemical Synthesis of Zinc Oxide Nanostructures on Flexible Substrate and Application as an Electrochemical Immunoglobulin-G Immunosensor

Electrochemical Synthesis of Zinc Oxide Nanostructures on Flexible Substrate and Application as an Electrochemical Immunoglobulin-G Immunosensor

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