Synthesis and characterization of novel spinel Zn 1.114 La 1.264 Al 0.5 O 4.271 nanoparticles

Shariatinia‬, Zahra; Sardsahra, Farzaneh Bagherpour

doi:10.1016/j.jallcom.2016.06.061

Cited by 22 publications

(5 citation statements)

References 65 publications

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“…Therefore, the origin of this broad visible emission may be due to contributions from V Zn and V O . Furthermore, the morphology and structure of ZnO have a significant influence on the intensity of fluorescence emission . Among these three ZnO, ZnO-NS possesses the smallest emission band, implying the lowest combination rate of photogenerated electrons and holes.…”

Section: Resultsmentioning

confidence: 99%

Significant Enhancement of Photocatalytic Reduction of CO₂ with H₂O over ZnO by the Formation of Basic Zinc Carbonate

Xin¹,

Wang³

et al. 2017

Langmuir

112

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Electron-hole pair separation efficiency and adsorption performance of photocatalysts to CO are the two key factors affecting the performance of photocatalytic CO reduction with HO. Distinct from conventional promoter addition, this study proposed a novel approach to address these two issues by tuning the own surface features of semiconductor photocatalyst. Three ZnO samples with different morphologies, surface area, and defect content were fabricated by varying preparation methods, characterized by XRD, TEM, and room-temperature PL spectra, and tested in photoreduction of CO with HO. The results show that the as-prepared porous ZnO nanosheets exhibit a much higher activity for photoreduction of CO with HO when compared to ZnO nanoparticles and nanorods attributed to the existence of more defect sites, that is, zinc and oxygen vacancies. These defects would lower the combination rate of electron-hole pair as well as promote the formation of basic zinc carbonate by Lewis acid-base interaction, which is the active intermediate species for photoreduction of CO. ZnO nanoparticles and ZnO nanorods with few defects show weak adsorption for CO leading to the inferior photocatalytic activities. This work provides new insight on the CO activation under light irradiation.

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Section: Resultsmentioning

confidence: 99%

Significant Enhancement of Photocatalytic Reduction of CO₂ with H₂O over ZnO by the Formation of Basic Zinc Carbonate

Xin¹,

Wang³

et al. 2017

Langmuir

112

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“…The Y 1.4972 Ce 0.8384 Ru 0.0387 O 4 formula indicates that the Zn 2+ and Al 3+ ions are replaced by Ce 4+ , Ru 4+ , and Y 3+ in the well-known spinel ZnAl 2 O 4 . The XPS spectrum deconvolution for the O 1s peak, as given in Figure d, shows five peaks as O 1s, O 1s A, O 1s B, O 1s C, and O 1s D at 528.78, 530.31, 531.39, 532.58, and 533.78 eV, respectively, which are in agreement with the values presented for O 1s peaks in the literature. − These five peaks may be assigned to the Y–O, Ce–O, and Ru–O bonds of the spinel catalyst material along with the C–O bonds due to the hydrocarbon compounds present on the particle surfaces. Three peaks are observed at 885, 900, and 917 eV (Figure e), which can be deconvoluted to three, four, and one peaks, respectively.…”

Section: Resultsmentioning

confidence: 96%

High Catalytic Activity and Low Coke Formation of Ni/Y_xCe_yRu_zO₄ Catalysts in the Methane Reforming Process in a Microstructure Reactor

Khani

Safari

Bahadoran³

et al. 2021

Ind. Eng. Chem. Res.

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The performance of spinel Y x Ce y Ru z O 4 (x = 1.5, y = 0.84, and z = 0.04) as the catalyst support in dry and steam reforming of methane (DMR/SMR) in a monolithic microreactor has been investigated. Ni/Y x Ce y Ru z O 4 catalysts have been compared with Ni/Ce−Y−Ru−Al 2 O 3 and Ni/Al 2 O 3 catalysts in the reactor test in terms of catalyst activity and stability under identical conditions. The structural features of the catalyst including surface area, morphology, and crystalline structure have been investigated using BET, XRD, XPS, TEM, FE-SEM, EDX, ICP, TPR, TGA, and TPD analyses. Y x Ce y Ru z O 4 shows that a good dispersion of the active nickel metal on the catalyst support will result in higher efficiency and activity, low temperature reduction, higher active BET surface area, and higher pore volume. The catalytic activity for SMR and DMR reactions is in the order Ni/Y x Ce y Ru z O 4 > Ni/Ce−Y−Ru−Al 2 O 3 > Ni/Al 2 O 3 . The highest methane conversion (93%) in addition to very low coke formation is obtained using Ni/Y x Ce y Ru z O 4 , which is a significant achievement in comparison to previous DMR and SMR catalysts.

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“…The above result concludes that the XRD pattern for this new novel material is specific, which is different from those of the sulfides mentioned above. 28…”

Section: Resultsmentioning

confidence: 99%

“…The above result concludes that the XRD pattern for this new novel material is specific, which is different from those of the sulfides mentioned above. 28 The full-width at half-maximum (FWHM) corresponding to the sharpest 2θ position at 26.61°was used to determine the average crystallite size using the Debye-Scherrer equation. The average crystallite size is also calculated from Debye-Scherrer's equation shown below;…”

Section: X-ray Diffraction (Xrd) Analysismentioning

confidence: 99%

Development of high-performance bi-functional novel CdSnS₂ atom clusters for adsorption of rose Bengal and AOP-assisted degradation of methylene blue

Mishra

Gadore

Ahmaruzzaman

2023

Environ. Sci.: Water Res. Technol.

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Synthesis and characterization of novel spinel Zn 1.114 La 1.264 Al 0.5 O 4.271 nanoparticles

Cited by 22 publications

References 65 publications

Significant Enhancement of Photocatalytic Reduction of CO₂ with H₂O over ZnO by the Formation of Basic Zinc Carbonate

Significant Enhancement of Photocatalytic Reduction of CO₂ with H₂O over ZnO by the Formation of Basic Zinc Carbonate

High Catalytic Activity and Low Coke Formation of Ni/Y_xCe_yRu_zO₄ Catalysts in the Methane Reforming Process in a Microstructure Reactor

Development of high-performance bi-functional novel CdSnS₂ atom clusters for adsorption of rose Bengal and AOP-assisted degradation of methylene blue

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Synthesis and characterization of novel spinel Zn 1.114 La 1.264 Al 0.5 O 4.271 nanoparticles

Cited by 22 publications

References 65 publications

Significant Enhancement of Photocatalytic Reduction of CO2 with H2O over ZnO by the Formation of Basic Zinc Carbonate

Significant Enhancement of Photocatalytic Reduction of CO2 with H2O over ZnO by the Formation of Basic Zinc Carbonate

High Catalytic Activity and Low Coke Formation of Ni/YxCeyRuzO4 Catalysts in the Methane Reforming Process in a Microstructure Reactor

Development of high-performance bi-functional novel CdSnS2 atom clusters for adsorption of rose Bengal and AOP-assisted degradation of methylene blue

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Significant Enhancement of Photocatalytic Reduction of CO₂ with H₂O over ZnO by the Formation of Basic Zinc Carbonate

Significant Enhancement of Photocatalytic Reduction of CO₂ with H₂O over ZnO by the Formation of Basic Zinc Carbonate

High Catalytic Activity and Low Coke Formation of Ni/Y_xCe_yRu_zO₄ Catalysts in the Methane Reforming Process in a Microstructure Reactor

Development of high-performance bi-functional novel CdSnS₂ atom clusters for adsorption of rose Bengal and AOP-assisted degradation of methylene blue