Synthesis and optical properties of Co<sup>2+</sup>-doped ZnO Network prepared by new precursors

Akhtari, Fereshteh; Zorriasatein, Suzan; Farahmandjou, Majid; Elahi, Seyed Mohammad

doi:10.1088/2053-1591/aac6f1

Cited by 23 publications

(3 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Researchers have been concluded that the photocatalytic performance of nanomaterials significantly depends upon the synthesis route, size, shape, crystallinity and dimension [32][33][34][35][36]. At present, different researchers have prepared ZnO nanostructures by different synthesis methods i.e., sol-gel [37][38][39], hydrothermal [40][41][42], co-precipitation [43][44][45], green [46][47][48][49], electrospinning [50,51] and sonochemical [52,53]. The sonochemical method among all mentioned methods has been proven to be a more economic, efficient and facile approach used for the synthesis of nanomaterials.…”

Section: Introductionmentioning

confidence: 99%

One-Pot Sonochemical Synthesis of ZnO Nanoparticles for Photocatalytic Applications, Modelling and Optimization

et al. 2019

View full text Add to dashboard Cite

This present study proposed a successful one pot synthesis of zinc oxide nanoparticles (ZnO NPs) and their optimisation for photocatalytic applications. Zinc chloride (ZnCl2) and sodium hydroxide (NaOH) were selected as chemical reagents for the proposed study. The design of this experiment was based on the reagents’ amounts and the ultrasonic irradiations’ time. The results regarding scanning electron microscopy (SEM), X-ray diffraction (XRD) and Raman spectroscopy confirmed the presence of ZnO NPs with pure hexagonal wurtzite crystalline structure in all synthesised samples. Photocatalytic activity of the developed samples was evaluated against methylene blue dye solution. The rapid removal of methylene blue dye indicated the higher photocatalytic activity of the developed samples than untreated samples. Moreover, central composite design was utilised for statistical analysis regarding the obtained results. A mathematical model for the optimisation of input conditions was designed to predict the results at any given point. The role of crystallisation on the photocatalytic performance of developed samples was discussed in detail in this novel study.

show abstract

Section: Introductionmentioning

confidence: 99%

One-Pot Sonochemical Synthesis of ZnO Nanoparticles for Photocatalytic Applications, Modelling and Optimization

et al. 2019

View full text Add to dashboard Cite

show abstract

“…FTIR spectra for the samples were recorded and are used to identify the functional groups and chemical bonding in TiO 2 and SnO 2 nanoparticles in the range of 400 cm − 1 to 4000 cm − 1 The peak at 2339 cm − 1 can be assigned to C-H vibrational band due to source of titanium. [38]. The peak at 3665 cm − 1 attributed to stretching vibration of O-H molecule.…”

Section: Resultsmentioning

confidence: 98%

Investigation of metal doped mesoporous TiO2 nanostructures for environmental remediation

Santhi¹,

Harish²,

Navaneethan³

et al. 2021

Preprint

View full text Add to dashboard Cite

In the recent past, metal oxides have attracted the researchers because of their applications in energy and environmental application domains. In the present work, hydrothermal technique used to prepared the Sn doped TiO2 nanoparticles and the effect of Sn concentration has been investigated. The structural, morphological, surface composition, optical and photocatalytic behavior were studied. XRD pattern revealed that doping of Sn makes easy transformation of rutile from anatase phase at lower temperature, providing tetragonal structure of rutile of TiO2. TEM analysis showed the formation of nanoparticles with spherical like morphology with good crystallinity. UV-Vis spectra, it is observed that optical absorption edge gets red shifted upon Sn doping and the band gap is found to be 2.6 eV. The photocatalytic activity of the synthesized nanoparticles has been investigated under visible light irradiation. Experimental results suggested that 0.5 wt % of Sn doped nanoparticles have shown to exhibit improved photocatalytic properties.

show abstract

“…Metal oxide semiconductors are widely used because of their excellent properties and numerous applications in optical and electronic fields . Aluminum oxide (Al 2 O 3 ) is an electric insulator with relatively high heat conductivity.…”

Section: Introductionmentioning

confidence: 99%

Structural and optical study of Fe³⁺‐doped Al₂O₃ nanocrystals prepared by new sol gel precursors

Khodadadi

Farahmandjou

Yaghoubi

et al. 2018

Int J Applied Ceramic Tech

Self Cite

View full text Add to dashboard Cite

Pure and Fe-doped Al 2 O 3 nanoparticles (NPs) were synthesized with different iron doping percentage of 1, 3, and 5 mol% employing sol gel technique with AlCl 3 , FeCl 3 as well as ethylene glycol (EG) and Polyvinylpyrrolidone (PVP) stabilizers as precursors. The XRD results indicated that the hexagonal structure of Fe/Al 2 O 3 nanocomposite with alpha phase was formed by the substitution of Fe 3+ ions in the alumina network. The sizes of the NPs obtained for the pure samples and doped samples at percentage dopant of 5% were 35 and 28 nm, respectively.The results of FTIR optical analysis showed the vibrational bond at the wavelength of 448 cm −1 , indicating the Al-O band in the sample. The UV-DRS analysis showed that the energy band gap for the pure NPs was 4 eV, but with increase in iron dopant up to 5%, it decreased to 3.42 eV. In addition, the results of photoluminescence (PL) analysis demonstrated that with increase in doping percentage, the PL intensity diminished. VSM magnetic analysis showed that with increase in iron dopant, the ferromagnetic state emerged in the NPs at saturation magnetism of 0.136 emu/g. Finally, photocatalytic experimental results demonstrated that 5% Fe-doped Al 2 O 3 NPs effectively degrade MB approximately 53%. K E Y W O R D Salpha phase, catalyst, crystal structure, Fe/Al 2 O 3 nanocrystals, solgel, XRD

show abstract

Synthesis and optical properties of Co²⁺-doped ZnO Network prepared by new precursors

Cited by 23 publications

References 36 publications

One-Pot Sonochemical Synthesis of ZnO Nanoparticles for Photocatalytic Applications, Modelling and Optimization

One-Pot Sonochemical Synthesis of ZnO Nanoparticles for Photocatalytic Applications, Modelling and Optimization

Investigation of metal doped mesoporous TiO2 nanostructures for environmental remediation

Structural and optical study of Fe³⁺‐doped Al₂O₃ nanocrystals prepared by new sol gel precursors

Contact Info

Product

Resources

About

Synthesis and optical properties of Co2+-doped ZnO Network prepared by new precursors

Cited by 23 publications

References 36 publications

One-Pot Sonochemical Synthesis of ZnO Nanoparticles for Photocatalytic Applications, Modelling and Optimization

One-Pot Sonochemical Synthesis of ZnO Nanoparticles for Photocatalytic Applications, Modelling and Optimization

Investigation of metal doped mesoporous TiO2 nanostructures for environmental remediation

Structural and optical study of Fe3+‐doped Al2O3 nanocrystals prepared by new sol gel precursors

Contact Info

Product

Resources

About

Synthesis and optical properties of Co²⁺-doped ZnO Network prepared by new precursors

Structural and optical study of Fe³⁺‐doped Al₂O₃ nanocrystals prepared by new sol gel precursors