Structural and spectral properties of undoped and tungsten doped Zn3(PO4)2ZnO nanopowders

Satyavathi, K.; Rao, M. Subba; Nagabhaskararao, Y.; Cole, Sandhya

doi:10.1016/j.jpcs.2017.09.004

Cited by 14 publications

(2 citation statements)

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“…The peak at 1024 cm −1 was assigned to anti‐symmetric stretching of PO 4 3− group . The peak at 948 cm −1 was due to asymmetric P‐O stretching mode, and the peak appeared at 632 cm −1 was because of symmetric P‐O stretching mode . The result indicated anionic phosphate was able to replace Cl − in the interlayer space and ion exchange may occur in the process of adsorption.…”

Section: Resultsmentioning

confidence: 94%

Phosphate uptake behavior and mechanism analysis of facilely synthesized nanocrystalline Zn‐Fe layered double hydroxide with chloride intercalation

Yang

Liu

Lǚ

et al. 2018

Surface & Interface Analysis

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Zn-Fe layered double hydroxide with chloride intercalation (ZFCL) was synthesized by a coprecipitation method at room temperature. ZFCL was characterized by N 2 adsorptiondesorption isotherms, X-ray diffraction, scanning electron microscope, Zeta-sizer analyzer, X-ray photoelectron spectroscopy, and Fourier transform infrared spectroscopy. The results showed that ZFCL had large surface area and layered structure. The maximum adsorption capacity of ZFCL was 150.6 mg/g at 25°C. That was higher than most other adsorbent which were reported. The kinetic data were described better by the pseudo-second-order adsorption kinetic rate model. The adsorption isotherm on the adsorbent was described by Langmuir, Freundlich, and Sips models at pH 6 and followed the fitting order: Sips >Freundlich>Langmuir. Thermodynamic analyses indicated that the phosphate adsorption on ZFCL was endothermic and spontaneous in nature. The sequence of coexisting cations and anions competing with phosphate was Ca 2+ > Mg 2+ > Na + and SO 4 2− > NO 3 − > Cl − . ZFCL can be regenerated by the sequential use of NaOH and ZnCl 2 . The adsorption capacity remained high as 108.6 mg/g after regeneration of 3 times. The results of zeta potential, Fourier transform infrared spectroscopy, and X-ray photoelectron spectroscopy analyses indicated that the phosphate adsorption mechanisms involved ion exchange, Zn 3 (PO 4 ) 2 precipitation, and the formation of inner-sphere complex via replacement of surface hydroxyl groups by phosphate.

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Section: Resultsmentioning

confidence: 94%

Phosphate uptake behavior and mechanism analysis of facilely synthesized nanocrystalline Zn‐Fe layered double hydroxide with chloride intercalation

Yang

Liu

Lǚ

et al. 2018

Surface & Interface Analysis

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show abstract

“…Based on elements (Mn and Zn), a lot of research is being done to get the materials with the desired functional properties. [40][41][42][43][44][45][46][47][48][49] Studies on Mn-doped Zn 3 P 2 nanoparticles have not been reported so far. These factors and the interesting properties exhibited by the Mn-doped Zn 3 P 2 system are the motivation to carry out this study.…”

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confidence: 99%

Structural, Optical, and Magnetic Properties of Mn Doped Zn₃P₂ Diluted Magnetic Semiconductor Nanoparticles

Praveenkumar,

Madhusudhana Rao,

Kalyan Chakravarthi

2024

ECS J. Solid State Sci. Technol.

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Mn-doped Zn3P2-diluted magnetic semiconducting nanoparticles (Zn0.98Mn0.02P2, Zn0.96Mn0.04P2, Zn0.94Mn0.06P2, and Zn0.92Mn0.08P2) were synthesized by a conventional solid-state reaction followed by a subsequent vacuum annealing process. The formation of a tetragonal structure of pure and Mn-doped Zn3P2 was confirmed by X-ray diffraction studies, with no evidence of any further phases. Lattice parameters dicrease from a=b= 8.133 Å, c=11.459 Å to a=b=8.041 Å, c=11.410 Å with increasing dopant concentration. Scanning electron microscpy analysis indicated that all samples that underwent doping exhibited agglomeration in the scanned range of 500 nm. Energy-dispersive X-ray analysis confirmed the presence of Zn, P, and Mn in the samples, and all of the synthesized samples achieved a nearly atomic ratio. In the diffused reflectance spectra, the optical band gap increases from 1.398 to 1.418 eV with increasing dopant concentration. PL has provided evidence indicating that the emission intensity of all doped samples remains constant with increasing dopant content from x=0.02 to 0.08, with different excitation wavelengths (215 and 290 nm). Vibrating sample magnetometer tests confirmed the presence of ferromagnetic behavior at room temperature, and a positive correlation between saturation magnetization and Mn content, with the magnetic moment increasing from 0.0640 to 0.1181 emu/g with an increase in dopant content.

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Effect of TiO2 doping on structural and optical properties of CdSZn3(PO4)2 nanocomposites

et al. 2019

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Structural and spectral properties of undoped and tungsten doped Zn3(PO4)2ZnO nanopowders

Cited by 14 publications

References 40 publications

Phosphate uptake behavior and mechanism analysis of facilely synthesized nanocrystalline Zn‐Fe layered double hydroxide with chloride intercalation

Phosphate uptake behavior and mechanism analysis of facilely synthesized nanocrystalline Zn‐Fe layered double hydroxide with chloride intercalation

Structural, Optical, and Magnetic Properties of Mn Doped Zn₃P₂ Diluted Magnetic Semiconductor Nanoparticles

Effect of TiO2 doping on structural and optical properties of CdSZn3(PO4)2 nanocomposites

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Structural and spectral properties of undoped and tungsten doped Zn3(PO4)2ZnO nanopowders

Cited by 14 publications

References 40 publications

Phosphate uptake behavior and mechanism analysis of facilely synthesized nanocrystalline Zn‐Fe layered double hydroxide with chloride intercalation

Phosphate uptake behavior and mechanism analysis of facilely synthesized nanocrystalline Zn‐Fe layered double hydroxide with chloride intercalation

Structural, Optical, and Magnetic Properties of Mn Doped Zn3P2 Diluted Magnetic Semiconductor Nanoparticles

Effect of TiO2 doping on structural and optical properties of CdSZn3(PO4)2 nanocomposites

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Structural, Optical, and Magnetic Properties of Mn Doped Zn₃P₂ Diluted Magnetic Semiconductor Nanoparticles