Synthesis and optical properties of MgO-doped ZnO microtubes using microwave heating

Al-Naser, Qusay A.H.; Zhou, Jian; Wang, Han; Liu, Guizhen; Wang, Lin

doi:10.1016/j.optmat.2015.03.046

Cited by 14 publications

(5 citation statements)

References 49 publications

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“…This band can be correlated with structural defects. The defects generated by the replacement of Zn by Cu and Mg favor the formation of oxygen vacancies in the lattice, causing a greater emission near the blue region 64,65 . In addition, there was a decrease in the band intensity in the red region, indicating that there was a variation in the number of oxygen vacancies within the ZnO lattice.…”

Section: Resultsmentioning

confidence: 99%

Photoluminescent and photocatalytic properties of Cu²⁺ and Mg²⁺‐doped ZnO nanoparticles obtained by a facile sonochemical method

Bezerra Neta,

Andrade Neto,

Silva

et al. 2023

Int J Ceramic Engine & Sci

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Pure ZnO particles, doped and co‐doped with Cu2+ and Mg2+ ions were obtained by the simple sonochemical method. The wurtzite hexagonal structure was confirmed by X‐ray diffraction (XRD) patterns. The images obtained by field emission scanning electron microscopy (FE‐SEM) showed irregular and more agglomerated particles with the increase of Cu2+ and Mg2+ ions concentration in the ZnO lattice, with the average diameter of particles in the range of 57.23‐170.77 nm. The photocatalytic activity was investigated by decolorizing the methylene blue (MB) dye under UVC light irradiation which indicates that 1% Mg‐doped ZnO particles have better photocatalytic activity than the other samples, and presented the highest kinetic constant value. The co‐doped samples showed a reduced global surface area which did not favor the good photocatalytic performance. The sacrificial agents showed that OH· radicals are the main species involved in the photocatalytic activity of this system and defects generated in the ZnO lattice promoted photoluminescent emission in the red and green regions.This article is protected by copyright. All rights reserved

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Section: Resultsmentioning

confidence: 99%

Photoluminescent and photocatalytic properties of Cu²⁺ and Mg²⁺‐doped ZnO nanoparticles obtained by a facile sonochemical method

Bezerra Neta,

Andrade Neto,

Silva

et al. 2023

Int J Ceramic Engine & Sci

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“…Microwave hybrid synthesis method of ZnO composites or ZnO hybrid structures, where the literature review results [ 887 , 888 , 889 , 890 , 891 , 892 , 893 , 894 , 895 , 896 , 897 , 898 , 899 , 900 , 901 , 902 , 903 , 904 , 905 , 906 , 907 , 908 , 909 , 910 , 911 , 912 , 913 , 914 , 915 , 916 , 917 , 918 , 919 , 920 , 921 , 922 , 923 , 924 , 925 , 926 , 927 ] are summarised in Table 14 .…”

Section: Microwave Hybrid Synthesis Of Znomentioning

confidence: 99%

“…composite and hybrid materials: Ag-ZnO [ 887 , 888 , 889 ], Au-ZnO [ 887 ], Ag–ZnO–graphene [ 889 ], Al 3+ doped ZnO/Sn doped In 2 O 3 [ 891 ], Au/Fe 2 O 3 –ZnO [ 892 ], ZnO/BiOBr [ 898 ], Zn–ZnO [ 899 , 900 ], ZnO–ZrO 2 [ 901 ], ZnAl 2 O 4 /ZnO [ 902 , 903 ], Cu–ZnO–Al 2 O 3 [ 905 ], Cu–ZnO [ 906 ], Fe 2 O 3 /ZnO [ 909 ], In 2 O 3 –Ga 2 O 3 –ZnO [ 912 , 913 ], MgO–ZnO [ 916 ], Sb 2 O 3 –MnO–CoO–Cr 2 O 3 –ZnO [ 918 ], Ti x O y –ZnO [ 920 ], ZnO/ZnFe 2 O 4 [ 921 ], ZnO/multi-walled carbon nanotube [ 922 ], ZnO—exfoliated graphene [ 923 ], ZnO–expandable graphite [ 927 ], and ZnO–reduced graphene oxide [ 924 , 925 ].…”

Section: Microwave Hybrid Synthesis Of Znomentioning

confidence: 99%

A Review of Microwave Synthesis of Zinc Oxide Nanomaterials: Reactants, Process Parameters and Morphologies

2020

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Zinc oxide (ZnO) is a multifunctional material due to its exceptional physicochemical properties and broad usefulness. The special properties resulting from the reduction of the material size from the macro scale to the nano scale has made the application of ZnO nanomaterials (ZnO NMs) more popular in numerous consumer products. In recent years, particular attention has been drawn to the development of various methods of ZnO NMs synthesis, which above all meet the requirements of the green chemistry approach. The application of the microwave heating technology when obtaining ZnO NMs enables the development of new methods of syntheses, which are characterised by, among others, the possibility to control the properties, repeatability, reproducibility, short synthesis duration, low price, purity, and fulfilment of the eco-friendly approach criterion. The dynamic development of materials engineering is the reason why it is necessary to obtain ZnO NMs with strictly defined properties. The present review aims to discuss the state of the art regarding the microwave synthesis of undoped and doped ZnO NMs. The first part of the review presents the properties of ZnO and new applications of ZnO NMs. Subsequently, the properties of microwave heating are discussed and compared with conventional heating and areas of application are presented. The final part of the paper presents reactants, parameters of processes, and the morphology of products, with a division of the microwave synthesis of ZnO NMs into three primary groups, namely hydrothermal, solvothermal, and hybrid methods.

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“…In order to improve the optical and electrical properties of ZnO, doping ZnO with suitable transition element has been chosen [24]. According to previous literature [25], MgO would be an appropri-ate element that can be used as a dopant in ZnO. This is due to the properties of MgO that has wide energy band gap of 7.80 eV [26] and the substitution of cationic (Mg 2+ ) in ZnO could modified the structural, optical and electrical properties of ZnO [25].…”

Section: Introductionmentioning

confidence: 99%

“…According to previous literature [25], MgO would be an appropri-ate element that can be used as a dopant in ZnO. This is due to the properties of MgO that has wide energy band gap of 7.80 eV [26] and the substitution of cationic (Mg 2+ ) in ZnO could modified the structural, optical and electrical properties of ZnO [25]. In this work, different concentration of MgO doped ZnO have been synthesized by using solution immersion method and the effect of MgO doped ZnO were characterized by FESEM, EDX and UV-Vis.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of MgO Doped ZnO Nanorods Prepared by Solution Immersion Method and their Effect on Energy Band Gap

Khusaimi¹,

Asib²,

Umbaidilah³

et al. 2019

IJET

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In this research, solid powder form ZnO and MgO-doped ZnO were prepared by using solution immersion method. Mg divalent cation with different atomic percentage of 0.5%, 1.0% and 1.5% were added in 0.04 M of Zn2+ solution containing zinc nitrate hexahydrates as precursor and hexamethylene tetraamine as stabilizer. Annealing treatment was consequently carried out to transform the precursors into oxide forms. ZnO and MgO-doped ZnO were successfully obtained and the surface morphology, crystallite size and elemental composition were studied using Field Emission Scanning Electron Microscope (FESEM) and Energy dispersive X-Ray (EDX) respectively. The band gap energy was determined using Ultraviolet-Visible spectrophotometer (UV-Vis). FESEM images showed that the powder form of ZnO and MgO-doped ZnO consist of rod-like shape. A 0.5% of MgO-doped ZnO sample has smallest size of rods with higher aspect ratio compared to others. The EDX result revealed that the sample composed of Zn, O and Mg in the sample. The band gap energy for all samples was determined using Tauc plot and it was found that the band gap energy is reduced with 1.0 and 1.5 % doping while increased at 0.5% doping. The band gap energy was found to range between 3.23 eV to 3.26 eV. The 0.5% of Mg-doped ZnO with higher aspect ratio shows the highest band gap energy value.

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Synthesis and optical properties of MgO-doped ZnO microtubes using microwave heating

Cited by 14 publications

References 49 publications

Photoluminescent and photocatalytic properties of Cu²⁺ and Mg²⁺‐doped ZnO nanoparticles obtained by a facile sonochemical method

Photoluminescent and photocatalytic properties of Cu²⁺ and Mg²⁺‐doped ZnO nanoparticles obtained by a facile sonochemical method

A Review of Microwave Synthesis of Zinc Oxide Nanomaterials: Reactants, Process Parameters and Morphologies

Synthesis and Characterization of MgO Doped ZnO Nanorods Prepared by Solution Immersion Method and their Effect on Energy Band Gap

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Synthesis and optical properties of MgO-doped ZnO microtubes using microwave heating

Cited by 14 publications

References 49 publications

Photoluminescent and photocatalytic properties of Cu2+ and Mg2+‐doped ZnO nanoparticles obtained by a facile sonochemical method

Photoluminescent and photocatalytic properties of Cu2+ and Mg2+‐doped ZnO nanoparticles obtained by a facile sonochemical method

A Review of Microwave Synthesis of Zinc Oxide Nanomaterials: Reactants, Process Parameters and Morphologies

Synthesis and Characterization of MgO Doped ZnO Nanorods Prepared by Solution Immersion Method and their Effect on Energy Band Gap

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Photoluminescent and photocatalytic properties of Cu²⁺ and Mg²⁺‐doped ZnO nanoparticles obtained by a facile sonochemical method

Photoluminescent and photocatalytic properties of Cu²⁺ and Mg²⁺‐doped ZnO nanoparticles obtained by a facile sonochemical method