Investigation of optical properties and the photocatalytic activity of synthesized YbYO4 nanoparticles and YbVO4/NiWO4 nanocomposites by polymeric capping agents

Pourmasoud, Saeid; Sobhani‐Nasab, Ali; Behpour, Mohsen; Rahimi‐Nasrabadi, Mehdi; Ahmadi, Farhad

doi:10.1016/j.molstruc.2017.12.077

Cited by 70 publications

(10 citation statements)

References 28 publications

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“…The crystal system of Fe 3 O 4 /CdWO 4 /CDs is orthorhombic, and the crystallite diameter (D c ) of products obtained by the Scherrer formula [14]:…”

Section: Synthesis Of Fe 3 O 4 /Cdwo 4 Heterostructurementioning

confidence: 99%

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Synthesis of Fe3O4/CdWO4/carbon dots heterostructure with excellent visible light photocatalytic stability and activity for degradation of 4-nitrophenol and organic pollutant

Sobhani‐Nasab

Hoseinpour

Rahimi‐Nasrabadi

et al. 2021

J Mater Sci: Mater Electron

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Here in, the synthesis of Fe 3 O 4 /CdWO 4 and their composite with carbon dot (CD) was achieved by a new method, and convenient procedure using carbohydrates as a reduction and capping agent. The resulting Fe 3 O 4 /CdWO 4 and Fe 3 O 4 /CdWO 4 /CD heterostructure were examined by X-ray diffraction, energy dispersive spectroscopy, field emission scanning electronmicroscopy, vibration sampling magnetometer, and transmission electron microscopy analyses. Fe 3 O 4 /CdWO 4 heterostructure indicated degradation around 49% while composite Fe 3 O 4 /CdWO 4 with CDs can degradation 99% for 80 min under visible light for Rodamin B. Factors influencing 4-nitrophenol elimination via the stated nanophotocatalyst, like size of nanostructures, pH, weight% CDs to Fe 3 O 4 / CdWO 4 and dyes were investigated. The finding showed that Fe 3 O 4 /CdWO 4 / CDs contains accumulation and spherical-like, fine monodispersity, pure structure, and superior magnetic features with particle size around 30 to 50 nm. UV-visible spectroscopy showed a decrease in the band gap of the Fe 3 O 4 / CdWO 4 from 3.15 to 2.70 eV with increasing CDs to Fe 3 O 4 /CdWO 4 nanostructures. In addition, the result showed that with assessment of pH, dose heterostructure and type dyes are able to optimum condition.

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“…The crystal system of Fe 3 O 4 /CdWO 4 /CDs is orthorhombic, and the crystallite diameter (D c ) of products obtained by the Scherrer formula [14]:…”

Section: Synthesis Of Fe 3 O 4 /Cdwo 4 Heterostructurementioning

confidence: 99%

“…One of the most successful procedures for removal of organic dyes is catalytic tungstate. However, it encounters problems which are hard to be separated via the traditional methods including centrifugation or alteration [14][15][16][17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Fe3O4/CdWO4/carbon dots heterostructure with excellent visible light photocatalytic stability and activity for degradation of 4-nitrophenol and organic pollutant

Sobhani‐Nasab

Hoseinpour

Rahimi‐Nasrabadi

et al. 2021

J Mater Sci: Mater Electron

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“…Chiral polymer particles have been drawing much interest due to their interesting optical activity and significant applications in chiral-related areas. − In the last decades, synthetic chiral polymers have achieved remarkable progress. − More recently, chiral polymer particles and chiral hybrid particles also have demonstrated substantial applications as chiral catalysts for asymmetric catalysis, ,− chiral recognition/adsorption, − enantioselective crystallization and chiral drug release. , However, up to date most of the chiral polymer particles were constructed by chiral monomers. , It has been well recognized that chiral monomers are expensive and in particular highly limited in both varieties and number. , To solve the limitations, chiral additives, chiral solvents, and chiral co-monomers , were used to generate chiral polymers derived from achiral monomers via chiral induction and/or chirality transfer strategies. The present work reports a new approach for preparing chiral polymer particles starting from achiral biomass, rationally combining an idea of post-chiralization.…”

Section: Introductionmentioning

confidence: 99%

“…21,22 However, up to date most of the chiral polymer particles were constructed by chiral monomers. 23,24 It has been well recognized that chiral monomers are expensive and in particular highly limited in both varieties and number. 25,26 To solve the limitations, chiral additives, 27 chiral solvents, 28 and chiral co-monomers 29,30 were used to generate chiral polymers derived from achiral monomers via chiral induction and/or chirality transfer strategies.…”

Section: Introductionmentioning

confidence: 99%

Optically Active Biobased Hollow Polymer Particles: Preparation, Chiralization, and Adsorption toward Chiral Amines

Raza

Yong

Deng

2019

Ind. Eng. Chem. Res.

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The present work reports a new type of optically active biobased hollow polymer particles (OABHPs) starting from a commonly available biophenylpropene transanethole (ANE). To prepare the OABHPs, ANE and maleic anhydride (MAH) underwent precipitation copolymerization in the presence of particulate template as cores, thereby forming core/shell particles. Subsequently removing the cores provided hollow particles, which were then chiralized with chiral agents (R-and S-1-phenylethylamine) and (R-and Scyclohexyalethylamine) to fabricate the designed OABHPs. The as-prepared particles were characterized by SEM, TEM, elemental analysis, CD, and FT−IR measurements. The chiral particles' enantioselectivity was further explored by using them as chiral adsorbent toward D-and L-alanine and (−)-cinchonidine and (+)-cinchonine. The optically active hollow particles showed good enantiomeric excess (e.e.) toward racemic alanine. The study not only opens up a new approach for preparing chiral polymer materials, but also provides a versatile platform for making a full use of biomass to develop advanced functional materials.

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“…Frequency dependence of the real and imaginary components of DP (1),(2) and the conductivity (3), (5) of the annealed CuO nanopowder. Line(4) shows the approximation of the real component of the conductivity While comparing these results with the data shown inFig.…”

mentioning

confidence: 99%

Localization and transfer of charge carriers in CuO nanopowder by impedance spectroscopy

Лепешев

Drokin

Ушаков

et al. 2018

J Mater Sci: Mater Electron

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Particular electro-physical characteristics of CuO nanopowder were investigated by impedance spectroscopy using a sensor based on interdigitated structure in the frequency range from 1 Hz to 100 MHz. The results of investigation were considered. Simulation of impedance spectra by equivalent electric circuits was carried out for numerical approximations of the frequency dependences of the dielectrical permittivity and conductivity. Electric charge accumulation of on the boundaries of nanoparticles and near the metal electrodes of the sensor was revealed. It was shown that a double electric layer is formed near the electrodes, which leads to the appearance of anomalously large values of dielectrical permittivity and an increase in the conductivity in the low-frequency region. The obtained results can be explained by proton conductivity in the nanopowder caused by moisture which is adsorbed on the surface of the nanoparticles. It was shown that after high-temperature annealing of CuO nanopowders, accumulation of electric charges was not observed. It was established that hopping or polaron conductivity occurs in the annealed CuO samples, which increases with increasing electric field frequency according to the power law with a fractional exponent.

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Investigation of optical properties and the photocatalytic activity of synthesized YbYO4 nanoparticles and YbVO4/NiWO4 nanocomposites by polymeric capping agents

Cited by 70 publications

References 28 publications

Synthesis of Fe3O4/CdWO4/carbon dots heterostructure with excellent visible light photocatalytic stability and activity for degradation of 4-nitrophenol and organic pollutant

Synthesis of Fe3O4/CdWO4/carbon dots heterostructure with excellent visible light photocatalytic stability and activity for degradation of 4-nitrophenol and organic pollutant

Optically Active Biobased Hollow Polymer Particles: Preparation, Chiralization, and Adsorption toward Chiral Amines

Localization and transfer of charge carriers in CuO nanopowder by impedance spectroscopy

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