Facile synthesis and characterization of zinc selenide nanoparticles in aqueous solution at room temperature

Hong, Hoon; Kim, Mi-So; Byun, Eun Kyung; Lee, You Lim

doi:10.1016/j.jcrysgro.2020.125523

Cited by 12 publications

(5 citation statements)

References 32 publications

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“…Emission peaks occurring at wavelengths shorter than 460 nm are believed to be brought about by changes in the band gap energy of the particles. [37]…”

Section: Optical Propertiesmentioning

confidence: 99%

Fabrication of Carbon‐Based ZnBi₂S₄ and ZnBi₂Se₄ Nanocomposites for Photocatalytic and Electrochemical Applications

Jasmine,

Muruganandam Ponvel

2023

ChemistrySelect

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Metal chalcogenide nanoparticles are widely used to degrade environmental pollutants. Zinc‐Bismuth Chalcogenide/Carbon (ZnBi2S4/Carbon and ZnBi2Se4/Carbon) nanocomposites were synthesized and the surface was covered with sucrose before carbonization to yield carbon nanocomposites. The solar irradiation is used to convert sucrose into carbon nanocomposites. The as‐synthesized nanocomposites were well characterized in detail in terms of their structural, morphological, functional, and optical properties. Nanocomposites are well‐known and frequently show excellent characteristics in all domains, including photocatalysis and electrochemical applications. The superior electron transfer capability, improved light harvesting, and increased catalytic active sites were said to play a crucial role in the bandgap contribution to the improved photocatalytic activity. The degradation of dyes like Methylene Blue (MB), Methyl Orange (MO), and Rhodamine B (RhB) in solution under sunlight irradiation was used to investigate the photocatalytic activities of the nanocomposites. Pseudo‐first‐order kinetic theory was followed. Specific capacitances of nanocomposites are 659.479 F/g and 871.198 F/g at 25 mV/s for ZnBi2S4/Carbon and ZnBi2Se4/Carbon nanocomposites, respectively.

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“…Emission peaks occurring at wavelengths shorter than 460 nm are believed to be brought about by changes in the band gap energy of the particles. [37]…”

Section: Optical Propertiesmentioning

confidence: 99%

Fabrication of Carbon‐Based ZnBi₂S₄ and ZnBi₂Se₄ Nanocomposites for Photocatalytic and Electrochemical Applications

Jasmine,

Muruganandam Ponvel

2023

ChemistrySelect

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“…According to the Varshni formulas proposed in [68][69][70][71][72], the difference between E g (4.2 K) and E g (78 K) is approximately 10-15 meV. Under the assumption that the band at 2.767 eV is also related to bound exciton, the binding energy E BX of this exciton to the impurity is found to be E BX = E g (78 K)−E FX −hν = (19)(20)(21)(22)(23) meV. This is a clear indication of the existence of defects which introduce more shallow level traps (0.1-0.2 eV).…”

Section: Pl Datamentioning

confidence: 99%

“…There are different methods to synthesize ZnSe nanostructures. There are chemical methods such as solvothermal method, hydrothermal method, sonochemical method, reverse micelle process, thermal decomposition as well as vapor deposition and microwave heating [17][18][19][20]. ZnSe nanoparticles are usually manufactured in colloidal form in organic or aqueous solvents or in form of nanopowders [20,21].…”

Section: Introductionmentioning

confidence: 99%

“…There are chemical methods such as solvothermal method, hydrothermal method, sonochemical method, reverse micelle process, thermal decomposition as well as vapor deposition and microwave heating [17][18][19][20]. ZnSe nanoparticles are usually manufactured in colloidal form in organic or aqueous solvents or in form of nanopowders [20,21]. However, in order to apply ZnSe nanocrystals (NCs) in optic and optoelectronic devices it is reasonable to cover synthesized nanocrystals with an inert transparent matrix.…”

Section: Introductionmentioning

confidence: 99%

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Radiative recombination in zinc blende ZnSe nanocrystals ion-beam synthesized in silica

Пархоменко¹,

Власукова²,

Комаров³

et al. 2022

J. Phys. D: Appl. Phys.

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Zinc selenide nanocrystals (NCs) were successfully synthesized in silicon dioxide (silica grown on a silicon wafer) by high-fluence implantation of Zn+ and Se+ ions with subsequent rapid thermal annealing at 1000°C for 3 min. The high crystalline quality of the zinc blende ZnSe nanoclusters was proven by transmission electron microscopy with selected area electron diffraction and Raman spectroscopy. Low-temperature photoluminescence (PL) reveals the recombination of excitons in ZnSe, what further indicates a good crystalline quality of the synthesized nanocrystals. PL analysis shows a strong coupling of phonons and excitons. The Huang−Rhys parameter of the longitudinal optical phonon in the exciton transition S is in the range of 0.6−0.7. Despite the excellent quality of the ZnSe NCs synthesized in silica, defect states inside the NCs or at the NCs/SiO2 interface with activation energies of 0.1–0.2, 0.45 and 0.67 eV play a crucial role in radiative recombination.

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“…Zn-based II–VI nanostructures such as zinc selenide (ZnSe) exhibit wide direct bandgap (2.67 eV) along with high exciton binding energy (21 meV); thus, ZnSe has been considered as an excellent choice for optoelectronic devices [ 5 , 6 , 7 ]. In recent times, researchers working in the domain of nanostructured materials have reported a number of different dimensional ZnSe nanostructures including nanorods, nanoplates, nanoneedles, nanobelts, nanoparticles and nanowires [ 8 , 9 , 10 , 11 , 12 , 13 , 14 ]. Diverse approaches have been applied for the synthesis of ZnSe nanostructures, such as microwave irradiation, hydrothermal, chemical vapor deposition and solvothermal [ 15 , 16 , 17 , 18 ].…”

Section: Introductionmentioning

confidence: 99%

Multifunctional Smart ZnSe-Nanostructure-Based Fluorescent Aptasensor for the Detection of Ochratoxin A

et al. 2022

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Herein, we present a comprehensive investigation of rationally designed zinc selenide (ZnSe) nanostructures to achieve highly negatively charged ZnSe nanostructures. A Microwave-assisted hydrothermal synthesis method was used to synthesize three types of ZnSe nanostructures, i.e., nanorods, µ-spheres and nanoclusters, as characterized by a zeta potential analyzer, X-ray diffraction (XRD), scanning electron microscopy (SEM), Raman spectroscopy and BET, which were labeled as type A, B and C. Three different solvents were used for the synthesis of type A, B and C ZnSe nanostructures, keeping other synthesis conditions such as temperature, pressure and precursors ratio constant. Based on two heating time intervals, 6 and 9 h, types A, B and C were further divided into types A6, A9, B6, B9, C6 and C9. ZnSe nanostructures were further evaluated based on their fluorescent quenching efficiency. The maximum fluorescence quenching effect was exhibited by the ZnSe-B6 type, which can be attributed to its highly negative surface charge that favored its strong interaction with cationic dye Rhodamine B (Rh-B). Further, the optimized ZnSe-B6 was used to fabricate an aptasensor for the detection of a food-based toxin, ochratoxin-A (OTA). The developed aptasensor exhibited a limit of detection of 0.07 ng/L with a wide linear range of 0.1 to 200 ng/L.

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Facile synthesis and characterization of zinc selenide nanoparticles in aqueous solution at room temperature

Cited by 12 publications

References 32 publications

Fabrication of Carbon‐Based ZnBi₂S₄ and ZnBi₂Se₄ Nanocomposites for Photocatalytic and Electrochemical Applications

Fabrication of Carbon‐Based ZnBi₂S₄ and ZnBi₂Se₄ Nanocomposites for Photocatalytic and Electrochemical Applications

Radiative recombination in zinc blende ZnSe nanocrystals ion-beam synthesized in silica

Multifunctional Smart ZnSe-Nanostructure-Based Fluorescent Aptasensor for the Detection of Ochratoxin A

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Facile synthesis and characterization of zinc selenide nanoparticles in aqueous solution at room temperature

Cited by 12 publications

References 32 publications

Fabrication of Carbon‐Based ZnBi2S4 and ZnBi2Se4 Nanocomposites for Photocatalytic and Electrochemical Applications

Fabrication of Carbon‐Based ZnBi2S4 and ZnBi2Se4 Nanocomposites for Photocatalytic and Electrochemical Applications

Radiative recombination in zinc blende ZnSe nanocrystals ion-beam synthesized in silica

Multifunctional Smart ZnSe-Nanostructure-Based Fluorescent Aptasensor for the Detection of Ochratoxin A

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Product

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Fabrication of Carbon‐Based ZnBi₂S₄ and ZnBi₂Se₄ Nanocomposites for Photocatalytic and Electrochemical Applications

Fabrication of Carbon‐Based ZnBi₂S₄ and ZnBi₂Se₄ Nanocomposites for Photocatalytic and Electrochemical Applications