Fabrication of ZnO-NiO nanocomposite thin films and experimental study of the effect of the NiO, ZnO concentration on its physical properties

Thamri, S.; Sta, I.; Jlassi, M.; Hajji, M.; Ezzaouia, Hatem

doi:10.1016/j.mssp.2017.08.017

Cited by 52 publications

(26 citation statements)

References 64 publications

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“…220 peak, centered at 439 cm À1 , may be assigned to the 221 ZnO E 2 (high) mode, which indicates the high crystalline quality of the film, being a characteristic 223 band of hexagonal wurtzite phase. [39][40][41] The peak at 224 382 cm À1 corresponds to the A1 (TO) mode of 225 wurtzite ZnO crystal. 38,[42][43][44] The final peak, at 226 332 cm À1 , can be attributed to the E 2 (high) À 227 E 2 (low) mode due to multiphonon process, indicat-228 ing that the films were single crystals.…”

Section: Sample Preparationmentioning

confidence: 99%

Improved Cu2O/AZO Heterojunction by Inserting a Thin ZnO Interlayer Grown by Pulsed Laser Deposition

Boughelout

Macaluso

Crupi

et al. 2019

Journal of Elec Materi

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Section: Sample Preparationmentioning

confidence: 99%

Improved Cu2O/AZO Heterojunction by Inserting a Thin ZnO Interlayer Grown by Pulsed Laser Deposition

Boughelout

Macaluso

Crupi

et al. 2019

Journal of Elec Materi

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“…This also affected the vibrational modes of NiO, which were monitored through the Raman spectra of solids. The Raman spectrum of nickel oxide has five bands originated from optical vibrations produced by one phonon (1P) of the transverse optical types (TO-440 cm -1 ) and longitudinal optical (LO-560 cm -1 ) and by two phonons (2P) that are the result of the coupling of the TO + TO (730 cm -1 ), TO+LO (930 cm -1 ) and LO + LO (1080 cm -1 ) modes [25][26][27][28]. The Raman spectra of the N0.75A0.25 and N0.66A0.33 materials (Fig.…”

Section: Resultsmentioning

confidence: 99%

“…Small bands at 960 and 1030 cm -1 were also noticed, which were associated to the LO+TO and 2LO vibrations, whereas bands related to the other modes of vibration were not identified. The bands produced by one phonon are characteristic of nickel oxide with alterations in its crystalline structure, which may be due to vacancies produced by the non-stoichiometric Ni1-xO oxide, or due to the presence of some Ni 3+ cations in the structure, which was evidenced by the dark gray tonality shown by the nickel-aluminum solids [26][27][28][29]. This fact indicates the presence of crystalline defects caused by the presence of aluminum in the crystal structure of NiO, favoring the presence of type 1P vibrations, which, by not interacting with each other, discourage the coupling of the modes that cause the type 2P vibrations.…”

Section: Resultsmentioning

confidence: 99%

Characteristics of NiO present in solids obtained from hydrotalcites based on Ni/Al and Ni-Zn/Al

Fuentes

Ruiz

Santos

2019

DYNA

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NiO has a variety of applications, mainly in the production of electrochemical sensors and of metallic nickel. In addition, it is widely used as catalysts to produce hydrogen from natural gas. In this work, hydrotalcites based on nickel-aluminum and nickel-zinc-aluminum were synthesized, calcined at 500 °C and studied by different techniques. It was observed that nickel-aluminum hydrotalcites are thermally more stable, collapsing at higher temperatures than hydrotalcites containing zinc. During calcination, aluminum is incorporated into NiO lattice, leading to a decrease in crystallographic parameters. However, zinc decreases this effect, favoring the formation of NiO with lattice parameters close to pure nickel oxide. Zinc also contributes to the formation of smaller NiO particles, which is very useful for its use as a catalyst. In addition, aluminum led to a distortion in NiO lattice, an effect that is minimized by zinc, showing that it hinders the incorporation of Al3+ in the NiO lattice.

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“…These nanostructured nanocomposites can be synthesized using different methods such as chemical bath deposition (CBD), co-precipitation, chem-ical vapour deposition (CVD), drop coasting, doctor blade, sol gel, hydrothermal, solvothermal etc. [11,12,13] Ion irradiation is the implantation of high-speed streams of energetic particles on the surface of the object with the intention of altering the structural, physical, optical, electrical, etc. properties of the material [14,15,16].…”

Section: Introductionmentioning

confidence: 99%

“…These nanostructured nanocomposites can be synthesized using different methods such as chemical bath deposition (CBD), co‐precipitation, chemical vapour deposition (CVD), drop coasting, doctor blade, sol gel, hydrothermal, solvothermal etc. [11, 12, 13]…”

Section: Introductionmentioning

confidence: 99%

Evaluation of 8.0 MeV Carbon (C²⁺) Irradiation Effects on Hydrothermally Synthesized Co₃O₄−CuO−ZnO@GO Electrodes for Supercapacitor Applications

et al. 2020

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Combination of transition metal oxides and carbon derivatives have received a lot of interest in last two decades for electrochemical energy storage due to their small size and high specific surface area. The effects of carbon ion irradiation on the properties of the electrodes were examined. The structural properties as obtained from the X-ray diffraction (XRD) results suggest that irradiation of the nanocomposite enhances the crystallinity of the materials up to the optimal dose of 5.0 × 10 15 ions/cm 2. Beyond this dose, there was a reduction in the crystallinity occasioned by distortion and defects in the structure of the material. The morphological studies indicated that the nanocomposites have spherical nanoparticles with some agglomerations. The agglomerations as well the particle sizes reduced with increase in the radiation dosages. The energy bandgaps estimated for the Co 3 O 4 À CuOÀ ZnO@GO reduced as energy dosages increases. The highest specific capacitance obtained from cyclic voltammetry (CV) plots at 10 mV/s scan rate and galvanostatic charge-discharge (GCD) were 1950 and 2045 F/g at a radiation dose of 5.0 × 10 15 ions/cm 2. Results indicate that carbon ion irradiations, especially low doses enhance the characteristics performance of these electrodes while high doses induce deficiencies and disorder to the Co 3 O 4 À CuOÀ ZnO@GO electrodes. These results also indicate that radiation is a useful tool to enhance or damage properties of nanomaterials especially with low energy doses.

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Fabrication of ZnO-NiO nanocomposite thin films and experimental study of the effect of the NiO, ZnO concentration on its physical properties

Cited by 52 publications

References 64 publications

Improved Cu2O/AZO Heterojunction by Inserting a Thin ZnO Interlayer Grown by Pulsed Laser Deposition

Improved Cu2O/AZO Heterojunction by Inserting a Thin ZnO Interlayer Grown by Pulsed Laser Deposition

Characteristics of NiO present in solids obtained from hydrotalcites based on Ni/Al and Ni-Zn/Al

Evaluation of 8.0 MeV Carbon (C²⁺) Irradiation Effects on Hydrothermally Synthesized Co₃O₄−CuO−ZnO@GO Electrodes for Supercapacitor Applications

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Fabrication of ZnO-NiO nanocomposite thin films and experimental study of the effect of the NiO, ZnO concentration on its physical properties

Cited by 52 publications

References 64 publications

Improved Cu2O/AZO Heterojunction by Inserting a Thin ZnO Interlayer Grown by Pulsed Laser Deposition

Improved Cu2O/AZO Heterojunction by Inserting a Thin ZnO Interlayer Grown by Pulsed Laser Deposition

Characteristics of NiO present in solids obtained from hydrotalcites based on Ni/Al and Ni-Zn/Al

Evaluation of 8.0 MeV Carbon (C2+) Irradiation Effects on Hydrothermally Synthesized Co3O4−CuO−ZnO@GO Electrodes for Supercapacitor Applications

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Evaluation of 8.0 MeV Carbon (C²⁺) Irradiation Effects on Hydrothermally Synthesized Co₃O₄−CuO−ZnO@GO Electrodes for Supercapacitor Applications