Synthesis and characterization of Sm3+-doped ZnO nanoparticles via a sol–gel method and their photocatalytic application

Ba‐Abbad, Muneer M.; Takriff, Mohd Sobri; Benamor, Abdelbaki; Nasser, Mustafa S.; Mahmoudi, Ebrahim; Mohammad, Abdul Wahab

doi:10.1007/s10971-017-4503-z

Cited by 40 publications

(12 citation statements)

References 46 publications

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“…In Figure S3, the Zn 2p energy spectrum of the zinc element is displayed, which shows characteristic peaks at 1021.50 eV and 1044.50 eV corresponding to the binding energies of Zn 2p 1/2 and Zn 2p 3/2 . The energy difference between the two peaks is approximately 23.1 eV, which is consistent with previously reported values for Zn 2+ in oxides. − The Zn 2p orbital binding energy of the ZIF-8-derived sample is slightly increased, particularly in the 160-ZIF sample, indicating that the growth of ZIF-8 affects the electronic state of…”

Section: Resultssupporting

confidence: 90%

High Response of ZIF-8-Derived ZnO Nanorods to Low-Concentration Ethylene Glycol

Wang,

Li,

Cheng

et al. 2023

ACS Appl. Nano Mater.

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Ethylene glycol, a common industrial raw material, finds widespread usage in various production and life applications such as antifreeze and chemical synthesis. However, it poses a threat to human health, being both odorless and colorless, which makes its detection difficult. Previous ethylene glycol sensors have had limited success in detecting low concentrations of the substance (response of 400–30 ppm). Hence, there is a need for a highly responsive and selective ethylene glycol sensor. In this study, different hydrothermal temperatures of 160–180 °C were used to prepare the precursor of ZIF-8, and the final ZnO nanorod sample was prepared accordingly. It was tested in the air environment of 20 °C and 10%RH and the product’s response and selectivity to ethylene glycol were systematically studied. The findings indicate that the sensor exhibited exceptional performance, displaying an ultrahigh response of 3264 for 25 ppm of ethylene glycol when operated at a temperature of 180 °C, along with high selectivity. Notably, in this study, the utilization of various zinc sources led to alterations in the crystal plane spacing of the resultant product. The remarkable gas-sensing performance can be attributed to the heightened presence of surface oxygen defects. Specifically, the oxygen vacancy content of the 200-ZIF sample increased by 9.2%, resulting in the corresponding adjustments in the carrier concentration. The results demonstrate that ZnO derived from ZIF-8 outperforms the hydrothermal method in sensing ethylene glycol, thus offering an approach for the precise detection of this compound.

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Section: Resultssupporting

confidence: 90%

High Response of ZIF-8-Derived ZnO Nanorods to Low-Concentration Ethylene Glycol

Wang,

Li,

Cheng

et al. 2023

ACS Appl. Nano Mater.

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“…Under ultrasonic irradiation, the combination of Sm doped ZnO and periodate was found to be most efficient catalytic system [79]. 0.50 wt percent Sm 3+ doped ZnO nanoparticles for degradation of 2-chlorophenol under sunlight showed highest degradation efficiency upto 99 percent [80]. Under visible light irradiation, Sm doped ZnO nanostructures have the highest efficiency for photodegradation (94.4%) for Methylene blue dye.…”

Section: Rafas-2021 Journal Of Physics: Conference Series 2267 (2022)...mentioning

confidence: 96%

A mini-review on rare earth metal doped ZnO nanomaterials for photocatalytic remediation of waste water

Kumar

Dosanjh

2022

J. Phys.: Conf. Ser.

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The mineralization and degradation of organic compounds present in waste water by heterogeneous photocatalysis has gained wide attention due to its effectiveness and tenancy to utilize UV-Visible solar light spectrum. The chemical stability, non-toxic character, magnificent electrical and optical properties have been recognized the ZnO as useful material for waste water treatment in environmental remediation technology. However, photocatalytic activity of ZnO limited to ultraviolet region because of its wide band gap (3.37eV). ZnO wide band gap obstruct photo-excitation for actual photocatalytic applications under abundant, safe and clean solar energy source. Many methods have been evolved in last decades to overcome this barrier. ZnO surfaces have been tailored with rare-earth metals to enhance its optical, surface and photocatalytic properties by different research groups. The doping with rare-earth metal ions enhanced the efficiency of ZnO photocatalyst by reducing band gap and shifted the absorbed wavelength to the visible region. This review paper compiles the attempts on modification of ZnO and their effect on photocatalytic activities by using rare earth metals.

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“…radical which could be easily converted into OH radical and this more active OH radical is responsible for the photo-catalytic activity. Ba-Abbad et al [154] also reported the degradation of 2-chlorophenol by doping of Samarium ion (Sm 3+ ) with ZnO. They synthesized Sm doped ZnO by sol gel method without any use of surfactant.…”

Section: Sm-doped Metal Oxides Nanoparticlesmentioning

confidence: 99%

Rare earth doped metal oxide nanoparticles for photocatalysis: a perspective

et al. 2022

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Metal oxides are well-known materials that have been considered as the prominent photocatalysts. Photocatalysis is a promising way to address the environmental issues which arecaused by fossil fuel the combustion and industrial pollutants. Lots of efforts such as doping metal oxides with metals, non-metals or metals/non-metals have been made to enhance their photocatalytic activity. More specifically, in this review we have discussed detailed synthesis procedures of rare earth doped metal oxides performed in the past decades. The advantage of doping metal oxides with rare earth metals is that they readily combine with functional groups due to the 4f vacant orbitals. Moreover, doping rare earth metals causes absorbance shift to the visible region of the electromagnetic spectrum which results to show prominent photocatalysis in this region. The effect of rare earth doping on different parameters of metal oxides such as band gap and charge carrier recombination rate has been made in great details. In perspective section, we have given a brief description about how researchers can improve the photocatalytic efficiencies of different metal oxides in coming future. The strategies and outcomes outlined in this review are expected to stimulate the search for a whole new set of rare earth doped metal oxides for efficient photocatalytic applications.

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Synthesis and characterization of Sm3+-doped ZnO nanoparticles via a sol–gel method and their photocatalytic application

Cited by 40 publications

References 46 publications

High Response of ZIF-8-Derived ZnO Nanorods to Low-Concentration Ethylene Glycol

High Response of ZIF-8-Derived ZnO Nanorods to Low-Concentration Ethylene Glycol

A mini-review on rare earth metal doped ZnO nanomaterials for photocatalytic remediation of waste water

Rare earth doped metal oxide nanoparticles for photocatalysis: a perspective

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