Room Temperature Ferromagnetism in Dual Doped (Mn2+, Ni2+) ZnO Codoped with Li1+ Prepared Using EDTA Sintered at Low Temperature

Pugaze, R.; Sivagamasundari, A.; Vanidha, D.; Sivakumar, Chandrasekar; Arunkumar, A.; Rajagopan, S.; Kannan, R.

doi:10.1016/j.jmst.2013.10.013

Cited by 8 publications

(2 citation statements)

References 41 publications

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“…Furthermore, the electron transfer facilitates the formation of holes (H + ) on the ZnO surface, leading to the production of •OH. Both •O 2 − and •OH are active substances for degrading organic dyes, which results in a significant enhancement in the catalytic activity 51,52 . In addition, the unique honeycomb and cylindrical structures with holes contribute to the large surface area, guaranteeing full contact between the light and RhB.…”

Section: Resultsmentioning

confidence: 99%

Two Hybrid Au-ZnO Heterostructures with Different Hierarchical Structures: Towards Highly Efficient Photocatalysts

Yang

Wang

Yan

et al. 2019

Sci Rep

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A new paradigm for photocatalysts based on two different hierarchically structured honeycomb and porous cylindrical Au-ZnO heterostructures was successfully developed via a straightforward and cost-effective hydrothermal method under different preparation conditions, which can be promising for industrial applications. The photocatalytic performance of all as-prepared samples under the illumination of sunlight was evaluated by the photocatalytic degradation of rhodamine B (RhB) and malachite green (MG) aqueous solutions. The results show that the photocatalytic degradation efficiency of RhB and MG was 55.3% and 40.7% for ZnO, 95.3% and 93.4% for the porous cylindrical Au-ZnO heterostructure, and 98.6% and 99.5% for the honeycomb Au-ZnO heterostructure, respectively. Compared with those from the ZnO, the results herein demonstrate an excellent reduction in the photoluminescence and improvement in the photocatalysis for the Au-ZnO hybrids with different morphologies. These results were attributed not only to the greatly improved sunlight utilization efficiency due to the surface plasmon resonance (SPR) absorption of Au nanoparticles in the visible region coupled with the UV light utilization by the ZnO nanostructures and multi-reflections of the incident light in the pore structures of their interior cavities but also to the high charge separation efficiency and low Schottky barrier generated by the combination of Au nanoparticles and ZnO micromaterials. Moreover, the honeycomb Au-ZnO heterostructure had a high Au content, surface area and surface oxygen vacancy (OV), which enabled photocatalytic properties that were higher than those of the porous cylindrical Au-ZnO heterostructures. In addition, two different formation mechanisms for the morphology and possible photocatalytic mechanisms are proposed in this paper.

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Section: Resultsmentioning

confidence: 99%

Two Hybrid Au-ZnO Heterostructures with Different Hierarchical Structures: Towards Highly Efficient Photocatalysts

Yang

Wang

Yan

et al. 2019

Sci Rep

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“…Adding of more than one transition metal into ZnO host lattice is recognized as a potential method to obtain RTFM [23]. A few authors reported Ni-Fe [24], Mn-Co [25][26], Cu-Co [27], Cr-Co [28], Mn-Ni [14,29], Cu-Fe [30][31], Ga-Co [32], In-Co [33], Fe-Co [34][35][36][37], and Ag-Fe [38] co-doped ZnO nanoparticles. In this work, we have synthesized pristine and (Fe, Al) co-doped ZnO nanoparticles via chemical coprecipitation method [39][40][41] at Room Temperature (RT) and studied structural, morphological, optical & magneti c properties of pristine and (Fe, Al) co-doped ZnO nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

Structural, optical & magnetic properties of (Fe, Al) co-doped zinc oxide nanoparticles

Swapna

Reddy

2019

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Pure and (Fe, Al) co-doped ZnO nanopowders are prepared via coprecipitation method constructively with PEG as capping agent at room temperature (RT). We kept the aluminum concentration as constant at 5 mol% by altering the iron concentration from one to three mol%. After the finishing point of synthesis, the powders are cautiously subjected to various characterizations for instance XRD, Raman, SEM through EDS, TEM, PL, UV-Vis-NIR and VSM, to analyze the properties of structural , morphological, optical and magnetic. XRD analysis reveals, all the nanopowder samples acquire hexagonal wurtzite structure by the nonexistence of secondary peaks involving to aluminum or iron. This reveals the well dissolving of aluminum and iron in to Zinc Oxide host lattice. The literal size of nanocrystallites is evaluated through TEM pictures, which are approximately corroborated by the XRD calculations. The nanostructures morphology is found through SEM illustrations, and the spectrum of EDS shows that no impurities are existence other than iron and aluminum. Optical properties are deliberated by the PL spectrum and UV-Vis-NIR spectrum; all the powder samples encompass defect associated peaks over the visible range. Magnetic properties are evaluated using VSM and all the co-doped samples contain the Ferromagnetic nature except pristine Zinc Oxide.

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Reversible CO2 capture by ZnO slurry leading to formation of fine ZnO particles

Yanase

Konno

Kobayashi

2018

Advanced Powder Technology

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Room Temperature Ferromagnetism in Dual Doped (Mn2+, Ni2+) ZnO Codoped with Li1+ Prepared Using EDTA Sintered at Low Temperature

Cited by 8 publications

References 41 publications

Two Hybrid Au-ZnO Heterostructures with Different Hierarchical Structures: Towards Highly Efficient Photocatalysts

Two Hybrid Au-ZnO Heterostructures with Different Hierarchical Structures: Towards Highly Efficient Photocatalysts

Structural, optical & magnetic properties of (Fe, Al) co-doped zinc oxide nanoparticles

Reversible CO2 capture by ZnO slurry leading to formation of fine ZnO particles

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