Effect of substituting the ionic radius in the structural and optoelectrical properties of spin-coated thin film synthesized by solvothermal method

Hussein, H.M.A.; Sharifi, Samira; Yazdani, Ahmad

doi:10.1016/j.ijleo.2021.166975

Cited by 8 publications

(2 citation statements)

References 29 publications

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“…1c and d that with the increase of Zn 2+ doping content, the peak positions of (010) diffraction peaks shift to the left by 0.07°, 0.09° and 0.12°, correspondingly, and the peak positions of (020) diffraction peaks shift to the left by 0.13°, 0.20° and 0.24°, respectively. This is probably because the ionic radius (0.74 Å) of Zn 2+ 28,29 is larger than the ionic radius (0.60 Å) of W 6+ , 30 resulting in lattice expansion and increased interplanar spacing. The (010) interplanar spacing was increased by 0.002 nm, calculated by Bragg eqn (2):where D is the grain size, K is the Scherrer constant, B is the half-peak width of the diffraction peak, θ is the diffraction angle, and the X-ray wavelength (Cu-Kα radiation source) is 0.154056 nm.2 d sin θ = λ where d is the crystal plane spacing, θ is the angle between the incident ray, the reflection ray and the reflection crystal plane, λ is the incident X-ray wavelength, and the copper target Cu-Kα is used as the radiation source ( λ = 0.154178 nm).…”

Section: Resultsmentioning

confidence: 99%

Enhanced photochromic performance of Zn-doped W₁₈O₄₉-based films for smart windows

Ma,

Li,

Zhu

et al. 2024

J. Mater. Chem. C

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Section: Resultsmentioning

confidence: 99%

Enhanced photochromic performance of Zn-doped W₁₈O₄₉-based films for smart windows

Ma,

Li,

Zhu

et al. 2024

J. Mater. Chem. C

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“…As the growth temperature increases from set A to set B, the O-H As seen, the crystallite size decreases as Ru doping increases in both sets; this result is due to the large molecular weight of the dopant (Ru) compared to the host (Zn) atoms, initiating an increase in the grain boundaries, resulting in the decrease in the crystallite size [35]. The impurity phase of RuO 2 shows a remarkable rise as Ru doping increases, caused by the large ionic difference between the dopant Ru 3+ (0.068 nm) and the host Zn 2+ (0.0074 nm) [36,37]. This large ionic difference prevents the dopant from incorporating into the host atoms leading to an increase in the crystallite size, as depicted in Table 1 [38].…”

Section: Resultsmentioning

confidence: 99%

Effect of Growth and Calcination Temperatures on the Optical Properties of Ruthenium-Doped ZnO Nanoparticles

Dasuki,

Habanjar,

Awad

2023

Condensed Matter

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This study aimed to probe the effect of heat treatment on zinc oxide nanoparticles doped with ruthenium through a chemical co-preparation technique. Pure ZnO and Ru-doped ZnO nanoparticles, with the general formula Zn1−x−RuxO, were synthesized for 0 ≤ x ≤ 0.04. Using the same starting precursors, the growth temperature was 60 °C and 80 °C for set A and set B, respectively, whereas the calcination temperature was 450 °C and 550 °C for set A and set B, respectively. For the structure investigation, X-ray powder diffraction (XRD) revealed that the crystallite size of set A was smaller than that of set B. For x = 0.04 in set B, the maximum value of the crystallite size was attributed to the integration of Ru3+ ions into interstitial sites in the host causing this expansion. Fourier transform infrared spectroscopy (FTIR) confirmed the formation of zinc oxide nanoparticles by showing a Zn-O bonding peak at 421 cm−1. For x = 0.04 in set B, the divergence confirmed the change in bonding properties of Zn2+ distributed by Ru3+ doping, which verifies the presence of secondary-phase RuO2. Using UV–visible spectroscopy, the energy gap of set A swings as ruthenium doping increases. However, in set B, as the crystallite size decreases, the energy gap increases until reversing at the highest concentration of x = 0.04. The transition from oxygen vacancy to interstitial oxygen, which is associated with the blue peak (469 nm), increases in set A under low heating conditions and decreases in set B as Ru doping increases, as revealed in the photoluminescence optical spectra of the samples. Therefore, ruthenium doping proves a useful surface defect and generates distortion centers in the lattice, leading to more adsorption and a remarkable advantage in sunscreen and paint products used for UV protection.

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Zn_xMg_1‐xO Solid Solutions: Efficient Bifunctional Acid‐Base Catalyst for the synthesis of Methyl Ethyl Oxalate from Dimethyl Oxalate and Ethanol

et al. 2023

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ZnO‐MgO composite catalysts were prepared by the coprecipitation method and used for the synthesis of methyl ethyl oxalate (EMO) from dimethyl oxalate (DMO) and ethanol (EtOH). The results of the SEM, XRD, FT‐IR and XPS confirmed that Zn2+ ions were incorporated into the cubic MgO lattice to form the solid solution structure over ZnO‐MgO composites catalysts with 6–18 mol% ZnO. The ZnO‐MgO composite catalysts with a solid solution structure have a large specific surface area, high medium acidic density, and medium basic density according to the results of N2 adsorption‐desorption, pyridine‐IR (Py‐IR) and NH3/CO2 temperature‐programmed desorption (NH3‐TPD/CO2‐TPD). The ZnxMg1‐xO solid solution with 18 mol% ZnO‐MgO (Zn0.18Mg0.82O) catalyst showed the highest catalytic activity with 71.98 % conversion of DMO and 67.36 % selectivity to EMO (DMO: EtOH molar ratio=1 : 2, reaction time=20 min, reaction temperature=80 °C and catalyst amount=1.5 wt%). The high catalytic activity was attributed to the solid solution structure with high medium acidic density and medium basic density. The conversion of DMO showed a positive linear correlation with the medium acidic density and medium basic density according to the correlation between catalytic activity and acidity‐basicity.

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Effect of substituting the ionic radius in the structural and optoelectrical properties of spin-coated thin film synthesized by solvothermal method

Cited by 8 publications

References 29 publications

Enhanced photochromic performance of Zn-doped W₁₈O₄₉-based films for smart windows

Enhanced photochromic performance of Zn-doped W₁₈O₄₉-based films for smart windows

Effect of Growth and Calcination Temperatures on the Optical Properties of Ruthenium-Doped ZnO Nanoparticles

Zn_xMg_1‐xO Solid Solutions: Efficient Bifunctional Acid‐Base Catalyst for the synthesis of Methyl Ethyl Oxalate from Dimethyl Oxalate and Ethanol

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Effect of substituting the ionic radius in the structural and optoelectrical properties of spin-coated thin film synthesized by solvothermal method

Cited by 8 publications

References 29 publications

Enhanced photochromic performance of Zn-doped W18O49-based films for smart windows

Enhanced photochromic performance of Zn-doped W18O49-based films for smart windows

Effect of Growth and Calcination Temperatures on the Optical Properties of Ruthenium-Doped ZnO Nanoparticles

ZnxMg1‐xO Solid Solutions: Efficient Bifunctional Acid‐Base Catalyst for the synthesis of Methyl Ethyl Oxalate from Dimethyl Oxalate and Ethanol

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Enhanced photochromic performance of Zn-doped W₁₈O₄₉-based films for smart windows

Enhanced photochromic performance of Zn-doped W₁₈O₄₉-based films for smart windows

Zn_xMg_1‐xO Solid Solutions: Efficient Bifunctional Acid‐Base Catalyst for the synthesis of Methyl Ethyl Oxalate from Dimethyl Oxalate and Ethanol