Synthesis of rod-like ZnO nanostructure: Study of its physical properties and visible-light driven photocatalytic activity

Shimpi, Nilesh; Rane, Y.N.; Shende, D.A.; Gosavi, S. R.; Ahirrao, P.B.

doi:10.1016/j.ijleo.2020.164916

Cited by 21 publications

(6 citation statements)

References 44 publications

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“…(JCPDS No. 80-0075) were found [22], which can be indicated by the crystalline orientation plane of the hexagonal structure. Moreover, subtle diffraction peaks at 47.60, 56.70, 62.90, and 68.10 deg.…”

Section: Resultsmentioning

confidence: 87%

Preparation of graphene oxide composited zinc oxide films by electrostatic spray deposition for humidity sensors

Thiwawong,

Maboonchauy,

Onlaor

et al. 2023

J. Mater. Sci. Appl. Energy.

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This work aimed to study the preparation of graphene oxide (GO) and zinc oxide (ZnO) composited films by electrostatic spray deposition for use in fabricated humidity sensors. The physical properties of prepared films were examined with X-ray diffraction, Raman spectroscopy, and scanning electron microscope. Subsequently, a humidity sensor was fabricated using a low-cost interdigitated electrode pattern with the print circuit board. The humidity sensing behaviors were assessed with fixed humidity levels in a saturated aqueous salt solution in the humidity range of 11 – 93%RH. The impedance value of the device was obtained with a precision LCR meter. It was found that the composited film of 0.50 %wt. GO demonstrated the highest humidity response with optimized humidity sensitivity, hysteresis error, and response/recovery times of 2.68 ´ 103, 4.89%, and 228/19 s, respectively. Moreover, the equivalent circuits for the prepared device at various humidity levels were acquired with impedance spectroscopy to propose the mechanism for the humidity sensing of the device.

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Section: Resultsmentioning

confidence: 87%

Preparation of graphene oxide composited zinc oxide films by electrostatic spray deposition for humidity sensors

Thiwawong,

Maboonchauy,

Onlaor

et al. 2023

J. Mater. Sci. Appl. Energy.

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“…The zinc oxide (ZnO) inherent characteristics such as wide band gap (3.3 eV), high excitation binding energy (60 meV), 6,7 abundance in nature, 8 low cost, 9,10 absence of toxicity, and chemical stability 11,12 . This semiconductor can be obtained by several methods 13,14 such as sonochemical, 15,16 hydrothermal, 17,18 coprecipitation, 19–21 and spray pyrolysis 22,23 .…”

Section: Introductionmentioning

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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“…Owing to its excellent chemical stability, non-toxic nature, cost-effectiveness, environmental friendliness, resistance to chemical pollutants, and strong oxidizing abilities, zinc oxide (ZnO) is frequently used as a photocatalyst in wastewater treatment. These characteristics make it a highly promising option for applications as a photocatalyst [9,10]. Among these, Zinc oxide (ZnO) nanostructures are receiving significant interest and have been considered as one of the most promising materials to be applied for photocatalysis.…”

Section: Introductionmentioning

confidence: 99%

“…ZnO is a recognized semiconductor photocatalyst, primarily valued for its inherent properties such as a broad direct band gap (3.37 eV), substantial exciton binding energy (60 meV) at room temperature, robust stability, and notable room temperature emission features [10][11][12]. In addition to its affordability, this material can be manipulated through various methods, yielding a various shapes including nanorods, nanoflowers, nanotubes, nanoneedles, nanoleaves, and nanosheets, among others [10,13] Previous reports show that the photocatalytic efficiency of ZnO nanostructures is strongly influenced by morphology, shape, size, surface area and defect concentration [14][15][16][17][18][19]. Other reports revealed that the photocatalytic activity is affected by the crystallographic plane [6,9,20,21].…”

Section: Introductionmentioning

confidence: 99%

Crucial roles of structural, morphological, and optical properties in enhancing the photocatalytic performance of ZnO nanorods

Sugianto,

Astuti,

Ngurah Made

et al. 2023

Mater. Res. Express

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ZnO nanorods with different structural, morphological, and optical properties were fabricated using hydrothermal process by controlling hydrothermal reaction temperature. It has been presented that the structural, morphological and optical properties of the nanorods are strongly influenced by the hydrothermal reaction temperature. XRD results show that ZnO nanorods have a polycrystalline structure with hexagonal wurtzite. Increasing hydrothermal reaction temperature up to 100 C stimulates the vertically standing growth along the c-axis orientation on the substrate as shown in FESEM images. The growth is followed by the decrease of the transmittance and energy band-gap of the ZnO nanorods. The photocatalytic activity of ZnO nanorod was evaluated using the percentage degradation of Coomassie® Brilliant blue and Indigo carmine dyes as a function of irradiation time. The photodegradation efficiency of ZnO nanorods synthesized with hydrothermal reaction temperatures at 80, 90 and 100 °C for decolorization of Coomassie® Brilliant blue was 71%, 75% and 81%, respectively, while for Indigo carmine was 50%, 53% and 66%, respectively. The variations of efficiency values indicate that the structural, morphological, and optical properties of ZnO nanorods play an important role in photocatalytic activity.

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Synthesis of rod-like ZnO nanostructure: Study of its physical properties and visible-light driven photocatalytic activity

Cited by 21 publications

References 44 publications

Preparation of graphene oxide composited zinc oxide films by electrostatic spray deposition for humidity sensors

Preparation of graphene oxide composited zinc oxide films by electrostatic spray deposition for humidity sensors

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

Crucial roles of structural, morphological, and optical properties in enhancing the photocatalytic performance of ZnO nanorods

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Synthesis of rod-like ZnO nanostructure: Study of its physical properties and visible-light driven photocatalytic activity

Cited by 21 publications

References 44 publications

Preparation of graphene oxide composited zinc oxide films by electrostatic spray deposition for humidity sensors

Preparation of graphene oxide composited zinc oxide films by electrostatic spray deposition for humidity sensors

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

Crucial roles of structural, morphological, and optical properties in enhancing the photocatalytic performance of ZnO nanorods

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