Structural, optical properties and optical modelling of hydrothermal chemical growth derived ZnO nanowires

Chu, Hin On; Wang, Quan; Shi, Yongjing; Song, Shigeng; Liu, Weiguo; Zhou, Shun; Gibson, D. R.; Alajlani, Yahya; Li, Cheng

doi:10.1016/s1003-6326(19)65191-5

Cited by 31 publications

(10 citation statements)

References 32 publications

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“…Therefore, ZnO has been indicated to have great potential in a wide range of photocatalysis and photoelectrochemical applications. The methods for regulating the growth of nanostructured ZnO mainly include hydrothermal synthesis, chemical vapour precipitation, and the sol-gel method [8][9][10]. Common methods of improving the photocatalytic activity of ZnO include doping metals and nonmetals, depositing precious metals, constructing heterojunctions, and coupling carbon materials [11].…”

Section: Introductionmentioning

confidence: 99%

Solvothermal Synthesis of ZnO Nanoparticles for Photocatalytic Degradation of Methyl Orange and p-Nitrophenol

Wang

Yang

Liu

et al. 2021

Water

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The photocatalytic degradation of organic pollutants is an effective method of controlling environmental pollution. ZnO nanoparticles (ZnO NPs) were prepared by the solvothermal method and characterized by scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and UV–visible diffuse reflectance spectroscopy (UV–Vis DRS). The results showed that the ZnO NPs had a uniform size of 25–40 nm, hexagonal wurtzite structure, and a band gap of 2.99 eV. The photocatalytic degradation of methyl orange (MO) and p-nitrophenol (PNP) was used as a model reaction to evaluate the photocatalytic activity of ZnO NPs. The photocatalytic degradation rates (pseudo-first-order kinetics) of MO and PNP were 92% (0.0128 min−1) and 56.2% (0.0042 min−1), respectively, with a 25 W ultraviolet lamp, MO/PNP concentration = 20 mg/L, ZnO NPs dose = 1.5 g/L, and time = 180 min. The photocatalytic mechanism of ZnO NPs and degradation pathways of MO and PNP were also proposed. The results provide valuable information and guidance for the treatment of wastewater via photocatalytic methods.

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Section: Introductionmentioning

confidence: 99%

Solvothermal Synthesis of ZnO Nanoparticles for Photocatalytic Degradation of Methyl Orange and p-Nitrophenol

Wang

Yang

Liu

et al. 2021

Water

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“…[ 117 ] The size and morphology of nanowires may be tailored by altering growth factors such as reagent concentration, pH, time, and temperature. [ 118–120 ]…”

Section: Methods Of Synthesismentioning

confidence: 99%

Nonspherical Metal‐Based Nanoarchitectures: Synthesis and Impact of Size, Shape, and Composition on Their Biological Activity

Zare

Zheng

Makvandi

et al. 2021

Small

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Metal‐based nanoentities, apart from being indispensable research tools, have found extensive use in the industrial and biomedical arena. Because their biological impacts are governed by factors such as size, shape, and composition, such issues must be taken into account when these materials are incorporated into multi‐component ensembles for clinical applications. The size and shape (rods, wires, sheets, tubes, and cages) of metallic nanostructures influence cell viability by virtue of their varied geometry and physicochemical interactions with mammalian cell membranes. The anisotropic properties of nonspherical metal‐based nanoarchitectures render them exciting candidates for biomedical applications. Here, the size‐, shape‐, and composition‐dependent properties of nonspherical metal‐based nanoarchitectures are reviewed in the context of their potential applications in cancer diagnostics and therapeutics, as well as, in regenerative medicine. Strategies for the synthesis of nonspherical metal‐based nanoarchitectures and their cytotoxicity and immunological profiles are also comprehensively appraised.

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“…Numerous studies have been conducted to control the development ZnO nanostructures for specific applications by adjusting the synthesis process, reactant and parameter [5][6][7]. In the literature, Perillo et al (2017) fabricated ZnO structure by using a chemical method at low temperatures.…”

Section: Introductionmentioning

confidence: 99%

Structural and Electrochemical Behaviors of ZnO Structure: Effect of Different Zinc Precursor Molarity

Mohamed

Anuar

2022

Condensed Matter

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This research synthesised zinc oxide (ZnO) structure by a hydrothermal method. ZnO samples were prepared using different molarities of zinc (Zn) precursor, ranging from 0.10 to 0.16 M. Structural and morphological properties were characterised by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The XRD patterns show that all samples are prominently grown along the three diffraction peaks at (001), (002) and (101) planes. The ZnO sample with 0.16 M Zn precursor has the highest peak orientation along the (002) plane. The average crystallite sizes for the ZnO structure with 0.10, 0.12, 0.14 and 0.16 M precursor are 48, 51, 49 and 31 nm, respectively. ZnO sample prepared at 0.16 M has the smallest crystallite size and the lowest tensile strain. The SEM images show that the ZnO samples are randomly oriented with average diameters of 209, 325, 295 and 348 nm when using 0.10, 0.12, 0.14 and 0.16 M of the precursor, respectively. The electrochemical behaviour of the ZnO structure was determined through cyclic voltammetry (CV) measurement. In the CV curve, the calculated specific capacitance for the ZnO sample prepared at 0.16 M has the highest value of 3.87 Fg−1. The ZnO sample prepared at 0.10 M has the lowest specific capacitance value of 2.11 Fg−1. Therefore, changing the molarity of the Zn precursor could change the structural and electrochemical properties. ZnO sample prepared with 0.16 M of the precursor provides the optimal result.

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Structural, optical properties and optical modelling of hydrothermal chemical growth derived ZnO nanowires

Cited by 31 publications

References 32 publications

Solvothermal Synthesis of ZnO Nanoparticles for Photocatalytic Degradation of Methyl Orange and p-Nitrophenol

Solvothermal Synthesis of ZnO Nanoparticles for Photocatalytic Degradation of Methyl Orange and p-Nitrophenol

Nonspherical Metal‐Based Nanoarchitectures: Synthesis and Impact of Size, Shape, and Composition on Their Biological Activity

Structural and Electrochemical Behaviors of ZnO Structure: Effect of Different Zinc Precursor Molarity

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