Preparation, characterization and photoluminescence of Zn<sup>2+</sup>/GaOOH nanowires

TIAN Li; LI Yan; WU Jieling; LIU Qiang; YI Yitao; CHEN Lijuan

doi:10.13801/j.cnki.fhclxb.20210818.001

Volume 39 Issue 7

Jul. 2022

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TIAN Li, LI Yan, WU Jieling, et al. Preparation, characterization and photoluminescence of Zn2+/GaOOH nanowires[J]. Acta Materiae Compositae Sinica, 2022, 39(7): 3347-3355. doi: 10.13801/j.cnki.fhclxb.20210818.001

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TIAN Li, LI Yan, WU Jieling, et al. Preparation, characterization and photoluminescence of Zn²⁺/GaOOH nanowires[J]. Acta Materiae Compositae Sinica, 2022, 39(7): 3347-3355. doi: 10.13801/j.cnki.fhclxb.20210818.001

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Preparation, characterization and photoluminescence of Zn²⁺/GaOOH nanowires

doi: 10.13801/j.cnki.fhclxb.20210818.001

School of Materials Science and Engineering, Hunan Provincial Key Defense Laboratory of High Temperature Wear-resisting Materials and Preparation Technology, Hunan Provincial Key Laboratory of Controllable Preparation and Functional Application of Fine Polymers, Hunan Provincial Key Laboratory of Advanced Materials for New Energy Storage and Conversion, Hunan University of Science and Technology, Xiangtan 411201, China

Received Date: 2021-06-07
Accepted Date: 2021-07-31
Rev Recd Date: 2021-07-18

Available Online: 2021-08-18

Publish Date: 2022-07-30

Abstract

Abstract

Gallium oxide hydroxide (GaOOH) is a kind of semiconductor material with broad-band gap and has extensive potential applications in the fields such as photocatalytic degradation of organic dyes, direct methanol fuel cell, lithium ion battery, bioluminescent imaging and so on. In our study, Zn²⁺/GaOOH nanowires have been synthesized via a facile and controllable hydrothermal method with zinc acetate and gallium nitrate as reactants and ethylenediaminetetraacetic acid disodium salt (Na₂Y) as template. The products were characterized by XRD、SEM、HRTEM and EDS techniques. The length of the as-prepared uniform Zn²⁺/GaOOH nanowires is up to several micrometers and the diameter is about 100 nm. Zn²⁺/GaOOH is single crystalline and grew along crystalline direction <110>. The phase and morphology of Zn²⁺/GaOOH are affected by reactants and their amounts. Keeping the reactant amount of 1.5 mmol gallium nitrate stand, Zn²⁺/GaOOH nanowires form with 1.0 mmol zinc acetate and 1.0-1.7 mmol Na₂Y, while spinel ZnGa₂O₄ nanoparticles obtain with 0.5 mmol Na₂Y. When the reactant amount of zinc acetate is changed to 2.0 mmol, only spinel ZnGa₂O₄ nanoparticles can be obtained with the reactant amount of 1.5 mmol gallium nitrate. The detail of the effects of the products by Zn∶Ga∶Y mole ratios on the phase and morphology was studied, showing the forming condition of phase-pure and uniform Zn²⁺/GaOOH nanowires with the Zn∶Ga∶Y mole ratio of 2∶3∶3. The result of photoluminescence determination shows that Zn²⁺/GaOOH nanowires exhibit strong PL emission in the blue-green wavelength range, attribute to the recombination of the defect-related excitations through an excitation-excitation collision process. The strongest PL emission is at 469 nm with the excitaton of 214 nm. The intensity of the emission peak at 469 nm rises with the blue-transiton of excitation wavelength. Zn²⁺/GaOOH nanowires show higher intensity of the emission peak at 469 nm by the excitation wavelength of 226 nm, accompany with ZnGa₂O₄ nanoparticles, indicating more excellent photoluminescence performance.
- GaOOH,
- nanowires,
- hydrothermal synthesis,
- photoluminescence,
- semiconductor material,
- Zn²⁺
Long Abstrsct
Innovation Points

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References(27)

References

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