Structural and Optical Characterization of ZnO Nanoparticles Synthesized by Microemulsion Route

Kumar, Harish; Rani, Renu

doi:10.56431/p-q38442

Cited by 98 publications

(35 citation statements)

References 27 publications

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“…In addition, the peak of 1267.29 cm -1 suggests the presence of a C-O group, and the peak of 708 cm -1 denotes the presence of a ZnO functional group. Consistent with research[15] stated that metal oxide has a peak in the fingerprint area…”

supporting

confidence: 79%

Synergy of Carbon Nanofiber Innovation from Zinc Oxide Modified Sugar Palm Fiber as Advanced Materials for Arsenic Heavy Metal Waste Remediation

Nugrahini

Mahardiani

Setiarini

et al. 2022

JKPK

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Heavy metal wastes cause water pollution. One of them is very toxic arsenic heavy metal waste; thus, treating them before they are released freely into the waters is necessary. In this case, the manufacture of carbon nanofibers (CNF) from sugar palm fiber waste is an innovation that can produce adsorbents to remediate heavy metals, thereby increasing the use value of sugar palm fiber waste. Carbon nanofiber from palm fiber (Arenga pinnata) was modified with ZnO metal, with varying concentrations of 0.1%, 1%, and 10%, in 1 gram of carbon nanofiber. Carbon nanofibers were made by carbonizing sugar palm fibers at 300oC for two hours. Furthermore, wet impregnation was carried out with Zn(CH3COO)2.2H2O and ended with calcination at 250oC for an hour, resulting in black nanofiber powder. This research was conducted to determine the effect of ZnO concentration on the characteristics of the carbon nanofiber produced and its effectiveness in remediating heavy metal arsenic. The ZnO/carbon nanofiber adsorbent material was then characterized using FTIR, XRD, and SEM analyses. Determination of the absorption of ZnO/carbon nanofibers on heavy metal arsenic was also assessed employing AAS analysis.

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supporting

confidence: 79%

Synergy of Carbon Nanofiber Innovation from Zinc Oxide Modified Sugar Palm Fiber as Advanced Materials for Arsenic Heavy Metal Waste Remediation

Nugrahini

Mahardiani

Setiarini

et al. 2022

JKPK

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“…The second peak at ∼258.11 °C, showing a heat flow of −1.65 J/g, is due to the conversion of zinc chloride to zinc oxide nanostructures. After that, the reduction of the heat flow can be attributed to the conversion of zinc oxide into zinc nanostructures …”

Section: Resultsmentioning

confidence: 99%

Tara Gum Coating with Embedded ZnO Nanostructures for Increased Postharvest Guava Shelf Life

Costa

Schlogl

Souza

et al. 2023

ACS Food Sci. Technol.

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Guava is a fruit that presents a high degree of perishability. This problem requires new effective technology with low environmental and human health impact for its resolution. A coating of tara gum with ZnO nanostructures is a promising alternative to increase the shelf life of this fruit. Therefore, the objective of this work was to optimize the production of the nanostructure, characterize it, and apply it in a guava coating. The nanostructure had a size of 173.15 nm and a polydispersity index of 0.601. Transmission electronic microscopy (TEM) confirmed a spherical morphology. ZnO nano showed antimicrobial activity against phytopathogenic fungi, being able to inhibit or slow down the growth of phytopathogens Colletotrichum gloeosporioides, Puccinia psidii , Diaporthe spp, and Penicillium spp. Nondestructive (visual and weight loss) and destructive (firmness, titratable acidity, pH, total solid residues, reducing sugars, and soluble sugars) tests were performed on guavas and showed very little change over 16 days post-harvest. The coating with ZnO nano resulted in better physical–chemical properties, and it verifies the potential use of the packaging produced for postharvest guava fruit conservation.

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“…This reaction is shown for amino acid present in protein biomolecules same reaction will happen for other biomolecules present in palash leaves powder, this amino acid & other functional groups present in biomolecules will be coated with ZnO nanoparticles to work as reducing and stabilizing agent SiO 2 was naturally present in palash leaves powder shown by EDX and FTIR of paalsh leaves powder [13][14][15] . The mechanism and role of biomolecules present in palash leaves are shown in Fig.…”

Section: Mechanism For Synthesis Of Zno/sio 2 Nanocatalyst By Palash ...mentioning

confidence: 97%

“…FTIR result is also showing stretching for Si-O-Si and in Zn-O, thus it has been confirmed that synthesized nanocatalystis ZnO/SiO 2 nanocomposite. From FTIR image, it can be said that ZnO stretching is found at IR frequency 492.83 and 1634.73 [13,18,20] . And for SiO 2, IR, frequency is found at 981.80 1028.09 and 1065.71 [20] .…”

Section: Ftir Analysismentioning

confidence: 99%

Biosynthesis of ZnO/SiO 2 nanocatalyst with palash leaves’ powder for treatment of petroleum refinery effluent

Suresh¹,

Bharati²

2017

REFFIT

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This work aims the synthesis and characterization of ZnO/SiO 2 nanocatalyst from plant waste material by green route and application of this ZnO/SiO 2 nanocatalyst for the treatment of petroleum refinery efflu- ent. Butea monosperma (Palash) leaves’ powder was used as reducing and stabilizing agent for synthesis of ZnO/SiO 2 nanocatalyst. Palash leaves contain broad variability of biomolecules which work as reducing and capping agent. In this research work, COD and acenaphthylene which is Polycyclic Aromatic Hydro- carbons (PAH) were degraded by synthesizing ZnO/SiO 2 nanocatalyst under UV-light in an annular photo- catalytic reactor. X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), FIELD emission gun-Scanning electron microscopy (FEG-SEM), Energy dispersive X-ray (EDX) and Transmission electron microscopy (TEM) analysis confirmed the formation of ZnO/SiO 2 nanocatalyst. Characterization studies re- vealed that spherical and hexagonal nanoparticles with particle size ranging from 8 ±5 nm to 40 ±5 nm and mean particle with diameter of 20 ±5 nm were synthesized using this method which is stable in the environment. Brunauer, Emmett and Teller (BET) surface area of ZnO/SiO 2 nanocatalyst is found to be 150.25 m 2 /g. Fractional Factorial design was applied to find optimum condition of process parameters and found that optimum percent. Removal of COD (mg/l), and acenaphthylene were achieved at reaction condition of 1 g/L of ZnO/SiO 2 nanocatalyst loading, 30 °C temperature and 4 h reaction time and found that optimum percent removal of COD (mg/l), and acenaphthylene is 75%, and 73% respectively. Various metals, naturally present in palash leaves’ powder, decrease band gap of energy and improve photocat- alytic activity of nanocatalyst.

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Structural and Optical Characterization of ZnO Nanoparticles Synthesized by Microemulsion Route

Cited by 98 publications

References 27 publications

Synergy of Carbon Nanofiber Innovation from Zinc Oxide Modified Sugar Palm Fiber as Advanced Materials for Arsenic Heavy Metal Waste Remediation

Synergy of Carbon Nanofiber Innovation from Zinc Oxide Modified Sugar Palm Fiber as Advanced Materials for Arsenic Heavy Metal Waste Remediation

Tara Gum Coating with Embedded ZnO Nanostructures for Increased Postharvest Guava Shelf Life

Biosynthesis of ZnO/SiO 2 nanocatalyst with palash leaves’ powder for treatment of petroleum refinery effluent

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