Pechini synthesis using propylene glycol and various acid as stabilizing agents and characterization of Gd2NiMnO6 ceramic nanostructures with good photocatalytic properties for removal of organic dyes in water

Mohassel, Reza; Amiri, Mina; Abbas, Ali Kareem; Sobhani, Azam; Ashrafi, Mahdi; Moayedi, Hossein; Salavati‐Niasari, Masoud

doi:10.1016/j.jmrt.2019.12.003

Cited by 19 publications

(3 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Over the past few decades, the double perovskite oxides A 2 BB O 6 (A = rare earth metal ions, B = transition metal ions) have gained immense research interest owing to their rich multifunctional characteristics and potential applications in the next generation spintronic devices [1][2][3][4][5][6]. Recently, several double perovskites have been reported to possess promising applicability in the field of photocatalysis, photovoltaic devices and photo(electro)chemical energy storage systems [6][7][8][9]. Especially, A 2 FeCrO 6 double perovskites (A = Pr, Bi etc.)…”

Section: Introductionmentioning

confidence: 99%

First-principles calculation of the electronic and optical properties of Gd2FeCrO6 double perovskite: Effect of Hubbard U parameter

Das

Bhuyan

Basith

2021

Journal of Materials Research and Technology

View full text Add to dashboard Cite

We have synthesized Gd2FeCrO6 (GFCO) double perovskite which crystallized in monoclinic structure with P21/n space group. The UV-visible and photoluminescence spectroscopic analyses confirmed its direct band gap semiconducting nature. Here, by employing experimentally obtained structural parameters in first-principles calculation, we have reported the spin-polarized electronic band structure, charge carrier effective masses, density of states, electronic charge density distribution and optical absorption property of this newly synthesized GFCO double perovskite. Moreover, the effects of on-site d-d Coulomb interaction energy (U eff ) on the electronic and optical properties were investigated by applying a range of Hubbard U eff parameter from 0 to 6 eV to the Fe-3d and Cr-3d orbitals within the generalized gradient approximation (GGA) and GGA+U methods. Notably, when we applied U eff in the range of 1 to 5 eV, both the up-spin and down-spin band structures were observed to be direct. The charge carrier effective masses were also found to enhance gradually from U eff = 1 eV to 5 eV, however, these values were anomalous for U eff = 0 and 6 eV. These results suggest that U eff should be limited within the range of 1 to 5 eV to calculate the structural, electronic and optical properties of GFCO double perovskite. Finally we observed that considering U eff = 3 eV, the theoretically calculated optical band gap ∼1.99 eV matched well with the experimentally obtained value ∼2.0 eV. The outcomes of our finding imply that the U eff value of 3 eV most accurately localized the Fe-3d and Cr-3d orbitals of GFCO keeping the effect of self-interaction error from the other orbitals almost negligible. Therefore, we may recommend U eff = 3 eV for first-principles calculation of the electronic and optical properties of GFCO double perovskite that might have potential in photocatalytic and related solar energy applications.

show abstract

Section: Introductionmentioning

confidence: 99%

First-principles calculation of the electronic and optical properties of Gd2FeCrO6 double perovskite: Effect of Hubbard U parameter

Das

Bhuyan

Basith

2021

Journal of Materials Research and Technology

View full text Add to dashboard Cite

show abstract

“…The generated CuO nanoparticles' diffraction peaks were calculated to be at 2θ values of 32.34° (110), 35.36° (− 111), 38.56° (111), 48.57° (−202), 53.39° (020), 58.14° (202), 61.40° (−113), 66.17° (− 311), 67.98° (220), 72.48° (311) and 75.02° (004), that confirms by CuO (JCPDS 80-1916) and indicated the formation of CuO nanostructures 28 . The crystallite size of CuO nanoparticles was determined to be 38.2 nm utilizing the Deby-Scherer equation 29 . The synthesized nanostructures were pure and no impurities detected.…”

Section: Resultsmentioning

confidence: 99%

CuONPs/MWCNTs/carbon paste modified electrode for determination of tramadol: theoretical and experimental investigation

Razavi

Amiri

Divsalar

et al. 2023

Sci Rep

Self Cite

View full text Add to dashboard Cite

A practical technique was applied to fabricate CuO nanostructures for use as the electrocatalyst. The green synthesis of cupric oxide nanoparticles (CuO NPs) via co-precipitation is described in this paper using an aqueous extract of Origanum majorana as both reductant and stabilizer, accompanied by characterization via XRD, SEM, and FTIR. The XRD pattern revealed no impurities, whereas SEM revealed low agglomerated spherical particles. CuO nanoparticles and multi wall carbon nanotubes (MWCNTs) have been used to create a modified carbon paste electrode. Voltammetric methods were used to analyze Tramadol using CuONPs/MWCNT as a working electrode. The produced nanocomposite showed high selectivity for Tramadol analysis with peak potentials of ~ 230 mV and ~ 700 mV and Excellent linear calibration curves for Tramadol ranging from 0.08 to 500.0 µM with a correlation coefficient of 0.9997 and detection limits of 0.025. Also, the CuO NPs/MWCNT/CPE sensor shows an an appreciable sensitivity of 0.0773 μA/μM to tramadol. For the first time the B3LYP/LanL2DZ, quantum method was used to compute DFT to determine nanocomposites' connected energy and bandgap energy. Eventually, CuO NPs/CNT was shown to be effective in detecting Tramadol in actual samples, with a recovery rate ranging from 96 to 104.3%.

show abstract

“…In space applications, medical appliances, aerospace applications and food cooling, MR is a fundamental requirement [7][8][9][10][11][12][13][14]. In the range of temperatures near the temperature of a magnetic phase transition ) ( MPT T , MR uses the idea to apply MCE on magnetocaloric (MC) material [15][16][17][18][19][20]. The researchers looked into a variety of magnet materials, such as magnetic alloys, manganites and others in order to develop and improve MR [29][30][31][32][33][34].…”

Section: Introductionmentioning

confidence: 99%

Strong Role of Calcination Temperature for Improving Magnetocaloric Effect in Nd0.5Sr0.5MnO3 Prepared via Combustion Technique

Hamad

Alamri

2021

Preprint

View full text Add to dashboard Cite

In this work, phenomenological model (PM) is used to simulate the magnetocaloric effect (MCE) of Nd0.5Sr0.5MnO3 (NSMO) sample synthesized at various values of temperature of calcination (Tcal). The results showed that MCE of NSMO samples depends strongly on Tcal, achieving that a conventional MCE for nanocrystalline NSMO samples. However, the thermomagnetic behavior of bulk NSMO sample NSMO contains both conventional MCE and inverse MCE. MCE of NSMO improves powerfully with increasing Tcal. The calcination process is concluded as a powerful tool for improving MCE for NSMO. Especially, NSMO parameters in MCE of some published works are better, with a value equal to or greater than the corresponding MCE parameters in the same value of ΔH. MCE of NSMO system, particularly for nitrogen and hydrogen liquefaction, covers an excellent temperature range is of interest for MR.

show abstract

Pechini synthesis using propylene glycol and various acid as stabilizing agents and characterization of Gd2NiMnO6 ceramic nanostructures with good photocatalytic properties for removal of organic dyes in water

Cited by 19 publications

References 42 publications

First-principles calculation of the electronic and optical properties of Gd2FeCrO6 double perovskite: Effect of Hubbard U parameter

First-principles calculation of the electronic and optical properties of Gd2FeCrO6 double perovskite: Effect of Hubbard U parameter

CuONPs/MWCNTs/carbon paste modified electrode for determination of tramadol: theoretical and experimental investigation

Strong Role of Calcination Temperature for Improving Magnetocaloric Effect in Nd0.5Sr0.5MnO3 Prepared via Combustion Technique

Contact Info

Product

Resources

About