Calcination effect to the physical and optical properties of Zn2SiO4 composite prepared by impregnation of ZnO on SiO2 amorphous nanoparticles

Ali, Engku Abd Ghapur Engku; Матори, Хамирул Амин; Saion, Elias; Aziz, Sidek Hj. Abdul; Zaid, Mohd Hafiz Mohd; Alibe, Ibrahim Mustapha

doi:10.1088/1757-899x/440/1/012036

Cited by 6 publications

(6 citation statements)

References 34 publications

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“…From the Figures 3 and 4, it is found that the increment in the absorption peak intensity at 580 cm −1 which implied the enhancement of ZnO 4 group unit by replacing the Si atoms [48]. Next, from the same figures, the dropping in the peak intensity at 620 and 1110 cm −1 can be seen which indicates the decrement of the asymmetrical stretching of ZnO 4 and Si-O-Si due to the breaking of ZnO 4 and Si-O-Si bonds during the formation of Zn 2 SiO 4 [49]. Table 1 further simplified the absorption band and the corresponding assignment band of the ZnO/Zn 2 SiO 4 composites.…”

Section: Fourier Transform Infrared (Ft-ir) Spectroscopymentioning

confidence: 85%

“…The absorption peak around 989 cm −1 was assigned to the SiO 4 asymmetric stretching vibration [15,45,47]. The existence of the vibrations of SiO 4 and ZnO 4 groups being evidence of the formation of the Zn 2 SiO 4 phase [47][48][49]. The vibrational band observed at 1110 cm −1 ascribed to the Si-O-Si asymmetric stretching vibrations [15,20].…”

Section: Fourier Transform Infrared (Ft-ir) Spectroscopymentioning

confidence: 99%

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Influence of Calcination Temperature on Crystal Growth and Optical Characteristics of Eu3+ Doped ZnO/Zn2SiO4 Composites Fabricated via Simple Thermal Treatment Method

et al. 2021

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This research paper proposes the usage of a simple thermal treatment method to synthesis the pure and Eu3+ doped ZnO/Zn2SiO4 based composites which undergo calcination process at different temperatures. The effect of calcination temperatures on the structural, morphological, and optical properties of ZnO/Zn2SiO4 based composites have been studied. The XRD analysis shows the existence of two major phases which are ZnO and Zn2SiO4 crystals and supported by the finding in the FT-IR. The FESEM micrograph further confirms the existence of both ZnO and Zn2SiO4 crystal phases, with progress in the calcination temperature around 700–800 °C which affects the existence of the necking-like shape particle. Absorption humps discovered through UV-Vis spectroscopy revealed that at the higher calcination temperature effects for higher absorption intensity while absorption bands can be seen at below 400 nm with dropping of absorption bands at 370–375 nm. Two types of band gap can be seen from the energy band gap analysis which occurs from ZnO crystal and Zn2SiO4 crystal progress. It is also discovered that for Eu3+ doped ZnO/Zn2SiO4 composites, the Zn2SiO4 crystal (5.11–4.71 eV) has a higher band gap compared to the ZnO crystal (3.271–4.07 eV). While, for the photoluminescence study, excited at 400 nm, the emission spectra of Eu3+ doped ZnO/Zn2SiO4 revealed higher emission intensity compared to pure ZnO/Zn2SiO4 with higher calcination temperature exhibit higher emission intensity at 615 nm with 700 °C being the optimum temperature. The emission spectra also show that the calcination temperature contributed to enhancing the emission intensity.

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Section: Fourier Transform Infrared (Ft-ir) Spectroscopymentioning

confidence: 85%

Section: Fourier Transform Infrared (Ft-ir) Spectroscopymentioning

confidence: 99%

Influence of Calcination Temperature on Crystal Growth and Optical Characteristics of Eu3+ Doped ZnO/Zn2SiO4 Composites Fabricated via Simple Thermal Treatment Method

et al. 2021

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“…The product of Zn2SiO4, in the current approach, is explained by the interface reaction between Zn 2+ and O 2-with silica shell at high temperatures [11,22]. Other studies mentioned that the formation of Zn2SiO4 from ZnO and SiO2 started 700 °C and clearly identified at 800 °C [23]. Based on the current results and other previous studies, plausible formation reactions of ZnO-SiO2 and Zn2SiO4 are as follow: Figure 3a-c shows different results depend on the reaction conditions.…”

Section: Resultsmentioning

confidence: 60%

ZnO-SiO2 and Zn2SiO4 Synthesis Utilizing Oil Palm Leaves for Degradation of Methylene Blue Dye in Aqueous Solution

Robkhob

Imboon

et al. 2020

J. Idn. Chem. Soc.

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A new approach was developed for the green synthesis of ZnO-SiO2 composite and Zn2SiO4 using zinc nitrate and sustainable silica precursor, oil palm (Elaeis guineensis) leaves (OPL). The products were synthesized at two different reaction temperatures through calcination in an open-air furnace at 500 and 1000 °C, respectively, and further identified with an X-ray diffractometry (XRD) analysis. The composite indicated by the presence of peaks at 2θ = 31.7°, 34.4°, 36.3°, 47.6°, 56.6°, and 62.9°, corresponds to ZnO and also revealed amorphous SiO2 at 2θ = 21°. Conversely, Zn2SiO4 was acknowledged at 2θ 25.6°, 31.50°, 34.0°, 39.5°, 48.9°, 56.5° and 65.6°, with crystalline silica at 2θ = 21.9°. The results showed the morphology of both products exhibited similar agglomeration based on scanning electron microscopy (SEM) analysis. Both products (ZnO-SiO2 composite and Zn2SiO4) possessed the capacity to degrade methylene blue (MB) under sunlight irradiation with efficiency of 85.9% and 69.3%, respectively.

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“…1b). Since there is no intermediate phase in the reaction 2 ZnO + SiO 2 → Zn 2 SiO 4 [43,44], as is the case for the forsterite phase (Mg 2 SiO 4 ) and the fact that Zn diffusion rates are higher than those for Mg in enstatite and forsterite [14], this compound is readily synthesisable with any of the 3 methods. Further, synthesis of enstatite samples (Mg 2 Si 2 O 6 , Fig.…”

Section: Phase Formationmentioning

confidence: 99%

A comparison of syntheses approaches towards functional polycrystalline silicate ceramics

et al. 2022

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Calcination effect to the physical and optical properties of Zn₂SiO₄ composite prepared by impregnation of ZnO on SiO₂ amorphous nanoparticles

Cited by 6 publications

References 34 publications

Influence of Calcination Temperature on Crystal Growth and Optical Characteristics of Eu3+ Doped ZnO/Zn2SiO4 Composites Fabricated via Simple Thermal Treatment Method

Influence of Calcination Temperature on Crystal Growth and Optical Characteristics of Eu3+ Doped ZnO/Zn2SiO4 Composites Fabricated via Simple Thermal Treatment Method

ZnO-SiO2 and Zn2SiO4 Synthesis Utilizing Oil Palm Leaves for Degradation of Methylene Blue Dye in Aqueous Solution

A comparison of syntheses approaches towards functional polycrystalline silicate ceramics

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