Synthesis and Characterization of ZnO Nanorods and Nanodisks from Zinc Chloride Aqueous Solution

Simonkolleite-graphene foam (SimonK/GF) composite has been synthesized by a facile solvothermal and environmentally friendly technique with excellent electrochemical properties. The obtained product was . The N 2 adsorption/desorption also shows the presence of active mesopores required for charge transport. As a promising electrode material for supercapacitors, the composite shows a high specific capacitance value of 1094 F/g at 1 A/g with a coulombic efficiency of 100% after 1000 cycles.These results show a potential for adoption of this composite in energy storage applications.

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“…. These values are comparable to or even larger than values reported in earlier research work on simonkolleite-based materials [15]. Fig.…”

Section: Materials Characterizationsupporting

confidence: 87%

Simonkolleite-graphene foam composites and their superior electrochemical performance

Momodu

Barzegar

Bello

et al. 2015

Electrochimica Acta

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“…Predictably, the characteristic band of wurtzite ZnO [2,[14][15][16] in the range of 400-500 cm -1 is strongest in the case of single phase ZnO (sample F3) and weakest in the case of Zn 5 (OH) 6 (CO 3 ) 2 (sample F1). Other marked absorption bands in sample F3 correspond to O-H bending and stretching 17,18 . In the same range of vibrations by residual NO 3 -ions 16 , the carbonate stretches in samples F1 and F2 are observed at 1540 and 1480 cm -1 and similar to the previous report on sol-gel synthesis of hydrozincite 19 .…”

Section: Nh H O Nh Ohmentioning

confidence: 98%

Effects of precursor concentration and reaction time on sonochemically synthesized ZnO nanoparticles

et al. 2013

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The sonochemical reaction between Zn(NO 3 ) 2 and hexamethylenetetramine (HMT) resulted in different products depending on amounts of Zn(II) cations in the aqueous solution. Crystalline phase pure ZnO nanoparticles were obtained by using 0.05 M Zn(NO 3 ) 2 -HMT. This single phase was formed by low power sonication for 20 min in an ultrasonic bath at ambient conditions and its morphology did not change for the next 60 min. Higher concentrations of precursors (0.1 and 0.5 M) led to a mixture of zinc compounds including plate-like Zn 5 (OH) 8 (NO 3 ) 2 (H 2 O). In contrast, a mixed phase ZnO/Zn 5 (OH) 6 (CO 3 ) 2 and a single phase Zn 5 (OH) 6 (CO 3 ) 2 were formed when the precursor concentrations were decreased to 0.01 and 0.005 M, respectively. The resulting infrared absorption and ultraviolet/visible emission were dependent on the phases and defects in these zinc compounds.

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“…Nanostructures of ZnO have received much interest in the research literature over the past decade and have been produced in many morphologies including thin films [1], nanorods, nanowires [2][3][4][5], nanowalls [6], nanodisks [7], nanohelixes, nanosprings, nanorings, nanobelts [8] and nanobowls. [9] One area of particular interest has being the production of ZnO nanorods for use in optical applications and studies.…”

Section: Introductionmentioning

confidence: 99%

Growth of isotopically enriched ZnO nanorods of excellent optical quality

Gray

Cullen

Byrne

et al. 2015

Journal of Crystal Growth

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We have produced isotopically enriched ZnO nanorods using Zn-enriched ZnO source powder by vapour phase transport on silicon substrates buffer-coated with unenriched ZnO seed layers. SEM and XRD data confirm successful growth of high quality, dense, c-axis aligned nanorods over a substantial surface area. Raman data show a shift of >1 cm -1 in the peak position of the Raman scattered peaks due to the E 2 low and E 2 high phonon modes when the Zn isotope is changed from 64 Zn to 68 Zn, consistent with previous work, thus confirming successful isotopic enrichment. SIMS data provides additional confirmation of enrichment.The optical quality (as determined by photoluminescence feature intensity and linewidth) is excellent. Samples with Zn isotopic enrichment ranging from 64 ZnO to 68 ZnO display a shift in recombination energy of the bound excitons at the band edge (3.34 -3.37 eV) of ~ 0.6 meV. This blue shift is also consistent with previously published data, further confirming *Manuscript Revised Click here to view linked References 2 both the excellent optical quality and successful isotopic substitution of ZnO nanorods using this relatively simple growth method.

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Synthesis and Characterization of ZnO Nanorods and Nanodisks from Zinc Chloride Aqueous Solution

Cited by 77 publications

References 30 publications

Simonkolleite-graphene foam composites and their superior electrochemical performance

Simonkolleite-graphene foam composites and their superior electrochemical performance

Effects of precursor concentration and reaction time on sonochemically synthesized ZnO nanoparticles

Growth of isotopically enriched ZnO nanorods of excellent optical quality

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