Morphological and optical property of spherical ZnO nanoparticles

Samanta, Pijus Kanti; Saha, Abhijit; Kamilya, Tapanendu

doi:10.1016/j.ijleo.2015.04.025

Cited by 16 publications

(7 citation statements)

References 34 publications

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“…These properties enable ZnO to be used for development of superhydrophobic, antibacterial, antistatic, UV-protective and self-cleaning products, UV light sources, gas sensors, transparent electrodes in solar cells, spintronics devices and biosensors [ 5 , 6 , 7 , 8 , 9 ]. Numerous methods have been invented for the synthesis of ZnO nanoparticles, including wet-chemical methods, combustion of Zn-containing precursors, laser ablation, hydrothermal and electrochemical methods, and chemical vapour deposition [ 3 , 4 , 5 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 ]. Depending on the synthesis parameters, a variety of morphological shapes have been reported [ 13 ].…”

Section: Introductionmentioning

confidence: 99%

“…These include simple spherical particles, three-dimensional particles with more complex shapes, nanorods and nanowires. The latter can have aspect ratios greater than 10 or even greater than 100 [14][15][16][17][18][19][20][21][22][23]. The vast majority of ZnO nanoparticles have more spherical shapes since such a morphology represents the minimum surface energy and is the most thermodynamically favourable.…”

Section: Introductionmentioning

confidence: 99%

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Recent Advances in the Plasma-Assisted Synthesis of Zinc Oxide Nanoparticles

et al. 2021

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An overview of recent work on the low-temperature plasma-assisted synthesis of zinc oxide (ZnO) nanoparticles is presented and interpreted in terms of gas-phase and surface reactions with illustrated examples. The thermodynamical nonequilibrium conditions allow the formation of chemically reactive species with a potential energy of several eV, which readily interact with the Zn precursors and initiate reactions leading to the formation of nanoparticles or nanowires. The high-quality nanowires were synthesized from Zn powders only upon interaction with moderately ionized plasma in a narrow range of plasma parameters. This technique is promising for the synthesis of large quantities of nanowires with aspect ratios well above 10, but the exact range of parameters remains to be determined. Apart from the ex situ techniques, the ZnO nanoparticles can be synthesized by depositing a film of precursors (often Zn salts or Zn-containing organometallic compounds) and exposing them to oxygen plasma. This technique is useful for the synthesis of well-adherent ZnO nanoparticles on heat-sensitive objects but requires further scientific validation as it often leads to the formation of a semicontinuous ZnO film rather than nanoparticles. Both low-pressure and atmospheric plasmas are useful in converting the precursor film into ZnO nanoparticles despite completely different mechanisms.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Recent Advances in the Plasma-Assisted Synthesis of Zinc Oxide Nanoparticles

et al. 2021

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“…The UV-visible spectrum of ZnO exhibited peak at 378 nm [Figure 2], this absorption maxima could be attributed to ZnO indicating that the Zinc nitrate has been converted into ZnO. [8]…”

Section: Uv-visible Spectroscopymentioning

confidence: 99%

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2022

IJGP

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The aim of the study was to synthesize zinc oxide (ZnO) using the bio reduction method and test its photocatalytic degradation potential against methylene blue (MB) dye. Materials and Methods: Zinc nitrate salt was utilized as a precursor for synthesis creation of ZnO nanoparticles. After bio reduction of zinc nitrate, off white cream precipitates were formed, indicating the formation of ZnO. The produced ZnO was characterized using Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD) analysis, and zeta potential measurements. Results and Discussion: FTIR peaks below 1000 cm -1 confirmed the formation of ZnO, while XRD studies showed that the average grain size of ZnO particles was 92 nm and these particles were crystalline in nature. Further, the average zeta potential value (-7.38 mV) of these NPs indicated that these particles were stable in nature. MB dye was used to examine the photocatalytic activity of the produced ZnO nanoparticles. According to our findings, ZnO nanoparticles have the capacity to degrade the MB dye. Conclusion: Overall, the findings revealed that ZnO synthesized through onion peel extract might be employed in dye-contaminated wastewater bioremediation.

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“…Zinc oxide (ZnO) is one of the highly studied materials in the industry because it is having particular characteristics such as morphology, electronic structure, high electron mobility, chemical stability, its semiconducting nature and it has wurtzite structure [16]. The binding energy associated with ZnO is ~60 MeV and bandgap energy ranging from ~ 3.15 eV to 3.37 eV [16][17][18] which is transparent to visible light and it is absorbing UV light making it a potential candidate for water purification. ZnO shows reduced particles size of few nanometres, thus widely explored and studied by researchers in the quest of excellent optical, chemical, physical, electronic properties in order to boost industrial and technological applications [19][20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%