Zinc Nanoparticles at Intercrystallite Sites of (Cu0.5Tl0.5)Ba2Ca3Cu4O12−δSuperconductor

Qasim, Irfan; Mumtaz, M.; Nadeem, K.; Abbas, Saleem

doi:10.1155/2016/9781790

Cited by 26 publications

(12 citation statements)

References 40 publications

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“…Peaks for Fe(110) bcc , Fe(200) bcc and Fe(211) bcc were identified in the spectrum of pure Fe powder, which corresponds to the literature [35][36][37]. Zn (002), Zn(100), Zn(102), Zn(103), Zn(110) and Zn(004) peaks were identified in the spectrum of pure zinc with a hexagonal closed pack structure which is following the literature [38][39][40]. All of the peaks identified in either the Fe or Zn spectrum were also present in the spectrum of the Fe-Zn sample without substantial shift and with the suppressed intensity.…”

Section: Discussionsupporting

confidence: 60%

Corrosion Behavior of Zn, Fe and Fe-Zn Powder Materials Prepared via Uniaxial Compression

et al. 2021

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Powder metallurgy is one of the most prevalent ways for metallic degradable materials preparation. Knowledge of the properties of initial powders used during this procedure is therefore of great importance. Two different metals, iron and zinc, were selected and studied in this paper due to their promising properties in the field of biodegradable implants. Raw powders were studied using scanning electron microscopy (SEM) coupled with energy dispersive spectrometry (EDX). Powders (Fe, Zn and Fe-Zn in a weight ratio of 1:1) were then compressed at the pressure of 545 MPa to the form of pellets with a diameter of 1.7 cm. Surface morphology and degradation behavior in the Hanks´ solution were studied and evaluated. Electrochemical polarization tests along with the static immersion tests carried out for 21 days were employed for corrosion behavior characterization. The highest corrosion rate was observed for pure Zn powder followed by the Fe-Zn and Fe, respectively. A mixed Fe-Zn sample showed similar properties as pure zinc with no signs of iron degradation after 21 days due to the effect of galvanic protection secured by the zinc acting as a sacrificial anode.

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Section: Discussionsupporting

confidence: 60%

Corrosion Behavior of Zn, Fe and Fe-Zn Powder Materials Prepared via Uniaxial Compression

et al. 2021

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“…01-078-3032). The peak around 43° can be assigned to some trace of MgO, while those at 38.5° and 44° could be due to some Zn clusters [43]. A peak at 40.5° marked with an asterisk in Figure 6b was previously found in ZnO nanopowders prepared by the sol-gel method with zinc acetate dihydrate as a precursor [44].…”

Section: Resultsmentioning

confidence: 57%

Band tail state related photoluminescence and photoresponse of ZnMgO solid solution nanostructured films

Morari¹,

Pantazi²,

Curmei³

et al. 2020

Beilstein J. Nanotechnol.

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A series of Zn1− x Mg x O thin films with the composition range x = 0.00–0.40 has been prepared by sol–gel spin coating on Si substrates with a post-deposition thermal treatment in the temperature range of 400–650 °C. The morphology of the films was investigated by scanning electron microscopy and atomic force microscopy while their light emission properties were studied by photoluminescence spectroscopy under excitation at 325 nm. It was found that annealing at 500 °C leads to the production of macroscopically homogeneous wurtzite phase films, while thermal treatment at higher or lower temperature results in the degradation of the morphology, or in the formation of ZnO particles embedded into the ZnMgO matrix, respectively. Local compositional fluctuations leading to the formation of deep band tails in the gap were deduced from photoluminescence spectra. A model for the band tail distribution in the bandgap is proposed as a function of the alloy composition. Thin films were also prepared by aerosol spray pyrolysis deposition using the same sol–gel precursors for the purpose of comparison. The prepared films were tested for photodetector applications.

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“…Ethyl cellulose and carbon black exhibit more defined amorphous peaks when compared to those of the cathode material. The diffraction peaks of the hexagonal closed pack structure of Zn are shown at 2θ angles of 36.34, 39.06, 43.28, 54.36, 70.1, and 70.68° corresponding to the (002), (100), (101), (102), (103), and (113) planes …”

Section: Resultsmentioning

confidence: 99%

“…57,58 In Figure 4b 102), (103), and (113) planes. 59 3.5. Paper-Based Mn/CB and Zn Metal/CB Supercapacitors.…”

Section: Thermal Stability and Shutdownmentioning

confidence: 99%

Paper Supercapacitor Developed Using a Manganese Dioxide/Carbon Black Composite and a Water Hyacinth Cellulose Nanofiber-Based Bilayer Separator

Beg,

Alcock,

Titus Mavelil

et al. 2023

ACS Appl. Mater. Interfaces

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Flexible and green energy storage devices have a wide range of applications in prospective electronics and connected devices. In this study, a new eco-friendly bilayer separator and primary and secondary paper supercapacitors based on manganese dioxide (MnO2)/carbon black (CB) are developed. The bilayer separator is prepared via a two-step fabrication process involving freeze–thawing and nonsolvent-induced phase separation. The prepared bilayer separator exhibits superior porosity of 46%, wettability of 46.5°, and electrolyte uptake of 194% when compared with a Celgard 2320 trilayer separator (39%, 55.58°, and 110%). Moreover, lower bulk resistance yields a higher ionic conductivity of 0.52 mS cm–1 in comparison to 0.22 mS cm–1 for the Celgard separator. Furthermore, the bilayer separator exhibits improved mean efficiency of 0.44% and higher specific discharge capacitance of 13.53%. The anodic and cathodic electrodes are coated on a paper substrate using MnO2/CB and zinc metal-loaded CB composites. The paper supercapacitor demonstrates a high specific capacitance of 34.1 mF cm–2 and energy and power density of 1.70 μWh cm–2 and 204.8 μW cm–2 at 500 μA, respectively. In summary, the concept of an eco-friendly bilayer cellulose separator with paper-based supercapacitors offers an environmentally friendly alternative to traditional energy storage devices.

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Zinc Nanoparticles at Intercrystallite Sites of (Cu_0.5Tl_0.5)Ba₂Ca₃Cu₄O_12−δSuperconductor

Cited by 26 publications

References 40 publications

Corrosion Behavior of Zn, Fe and Fe-Zn Powder Materials Prepared via Uniaxial Compression

Corrosion Behavior of Zn, Fe and Fe-Zn Powder Materials Prepared via Uniaxial Compression

Band tail state related photoluminescence and photoresponse of ZnMgO solid solution nanostructured films

Paper Supercapacitor Developed Using a Manganese Dioxide/Carbon Black Composite and a Water Hyacinth Cellulose Nanofiber-Based Bilayer Separator

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