ZnO-based nanomaterials approach for photocatalytic and sensing applications: recent progress and trends

Güell, Frank; Galdámez‐Martínez, Andrés; Martínez‐Alanis, Paulina R.; Catto, Ariadne C.; Silva, Luís F. da; Mastelaro, Valmor Roberto; Santana, G.; Dutt, Ateet na

doi:10.1039/d3ma00227f

Cited by 41 publications

(6 citation statements)

References 191 publications

(296 reference statements)

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“…Hydrogen peroxide absorbs super oxide ions to create hydroxyl free radicals in the following process. Finally, H2O2 absorbs electrons and instantly transforms into hydroxyl free radicals [16][17][18] .…”

Section: Photocatalytic Studiesmentioning

confidence: 99%

Photocatalytic degradation of organic dyes using transition metal based mixed metal oxide nanocomposite under different illumination

Biju

2023

Charact. Appl. Nanomater.

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Nowadays, copper and zinc nanoparticles are widely employed in a variety of applications. With nanoscale particle sizes, copper oxide/zinc oxide composite is easily synthesized using a variety of techniques, including hydrothermal, microwave, precipitation, etc. In the current work, chemical precipitation is used to create a copper oxide/zinc oxide nanocomposite. XRD analysis was used to determine the nanocomposite’s structural characteristics. Through SEM analysis, the surface morphological properties are investigated. EDAX is used to study the chemical composition of produced materials, while UV/Visible spectroscopy is used to determine their optical properties. The assessment of the copper oxide/zinc oxide nanocomposite’s degrading property on dyes like methyl red and methyl orange under UV and visible light are the main objectives of the current work.

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Section: Photocatalytic Studiesmentioning

confidence: 99%

Photocatalytic degradation of organic dyes using transition metal based mixed metal oxide nanocomposite under different illumination

Biju

2023

Charact. Appl. Nanomater.

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“…If the piezoelectric and photocatalytic properties of ZnO are coupled, the photocatalytic efficiency is probably enhanced by the piezoelectrically encouraged separation of the photogenerated electron–hole carriers. 132,134 The nanostructured materials of TiO 2 , CdS, and Ag 3 PO 4 135 as well as multilayer black phosphorus (BP) 136,137 and single-atomic-layer molybdenum disulfide (MoS 2 ) 138,139 also show piezoelectricity. BP is a mono-elemental 2D material that shows piezoelectricity because of its extremely directional properties and non-centrosymmetric structure.…”

Section: Piezoelectric Materialsmentioning

confidence: 99%

Electron/hole piezocatalysis in chemical reactions

Asgari,

Mohammadi Ziarani,

Badiei

et al. 2023

Mater. Adv.

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“…ZnO's bandgap is widened due to the incorporation of impurity energy levels by the transition metal dopants. These energy levels may generate new charge carriers by absorbing or re-emitting electrons from the valence band [66,67].…”

Section: Electrical Analysismentioning

confidence: 99%

Investigation of Photoluminescence and Optoelectronics Properties of Transition Metal-Doped ZnO Thin Films

Khan,

Nowsherwan,

Ali

et al. 2023

Molecules

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Thin films of zinc oxide (ZnO) doped with transition metals have recently gained significant attention due to their potential applications in a wide range of optoelectronic devices. This study focuses on ZnO thin films doped with the transition metals Co, Fe, and Zr, exploring various aspects of their structural, morphological, optical, electrical, and photoluminescence properties. The thin films were produced using RF and DC co-sputtering techniques. The X-ray diffraction (XRD) analysis revealed that all the doped ZnO thin films exhibited a stable wurtzite crystal structure, showcasing a higher structural stability compared to the undoped ZnO, while the atomic force microscopy (AFM) imaging highlighted a distinctive granular arrangement. Energy-dispersive X-ray spectroscopy was employed to confirm the presence of transition metals in the thin films, and Fourier-transform infrared spectroscopy (FTIR) was utilized to investigate the presence of chemical bonding. The optical characterizations indicated that doping induced changes in the optical properties of the thin films. Specifically, the doped ZnO thin film’s bandgap experienced a significant reduction, decreasing from 3.34 to 3.30 eV. The photoluminescence (PL) analysis revealed distinguishable emission peaks within the optical spectrum, attributed to electronic transitions occurring between different bands or between a band and an impurity. Furthermore, the introduction of these transition metals resulted in decreased resistivity and increased conductivity, indicating their positive influence on the electrical conductivity of the thin films. This suggests potential applications in solar cells and light-emitting devices.

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ZnO-based nanomaterials approach for photocatalytic and sensing applications: recent progress and trends

Abstract: Nowadays, there is a rising urge to develop and implement cheaper, abundant, and environmentally friendly semiconducting materials into practical devices. In this regard, zinc oxide (ZnO) presents itself as a...

Cited by 41 publications

References 191 publications

Photocatalytic degradation of organic dyes using transition metal based mixed metal oxide nanocomposite under different illumination

Photocatalytic degradation of organic dyes using transition metal based mixed metal oxide nanocomposite under different illumination

Electron/hole piezocatalysis in chemical reactions

Investigation of Photoluminescence and Optoelectronics Properties of Transition Metal-Doped ZnO Thin Films

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