High photocatalytic performance of copper-doped SnO2 nanoparticles in degradation of Rhodamine B dye

Arif, Muhammad; Shah, Muhammad Zia Ullah; Ahmad, Syed Awais; Shah, Muhammad Sanaullah; Ali, Zulfiqar; Ullah, Atta; Idrees, Muhammad; Zeb, Johar; Song, Peng; Huang, Taihong; Yi, Jianhong

doi:10.1016/j.optmat.2022.113135

Cited by 32 publications

(9 citation statements)

References 47 publications

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“…Thus, we again obtain a decrease in the band-gap energy E g as observed in [10,50,[73][74][75]. Let us emphasize that similar behavior is also reported in TM-doped CeO 2 [13,72,[76][77][78] and SnO 2 NPs [12,65,79]. In order to clarify the discrepancies by Mn ion doping, let us emphasize that, with our model, we obtain a reduced band gap in a Mn 2+ (r = 0.8 Ȧ)-doped SnO 2 NP using J(Mn-Mn) = 20.24 meV [12] (see Figure 3, curve 3).…”

Section: Transition-metal-ion (Co Fe Mn and Cu) Doping Effect On The ...supporting

confidence: 85%

Band Gap Tuning in Transition Metal and Rare-Earth-Ion-Doped TiO2, CeO2, and SnO2 Nanoparticles

2022

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The energy gap Eg between the valence and conduction bands is a key characteristic of semiconductors. Semiconductors, such as TiO2, SnO2, and CeO2 have a relatively wide band gap Eg that only allows the material to absorb UV light. Using the s-d microscopic model and the Green’s function method, we have shown two possibilities to reduce the band-gap energy Eg—reducing the NP size and/or ion doping with transition metals (Co, Fe, Mn, and Cu) or rare earth (Sm, Tb, and Er) ions. Different strains appear that lead to changes in the exchange-interaction constants, and thus to a decrease in Eg. Moreover, the importance of the s-d interaction, which causes room-temperature ferromagnetism and band-gap energy tuning in dilute magnetic semiconductors, is shown. We tried to clarify some discrepancies in the experimental data.

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Section: Transition-metal-ion (Co Fe Mn and Cu) Doping Effect On The ...supporting

confidence: 85%

Band Gap Tuning in Transition Metal and Rare-Earth-Ion-Doped TiO2, CeO2, and SnO2 Nanoparticles

2022

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“…The decomposition of RhB (Scheme ) is routinely used to demonstrate piezocatalysis , as a surrogate for the general class of aromatic dyes found in wastewater. It is also a convenient substrate since it has a very large molar absorption coefficient so that sensitive detection of changes in RhB concentration can easily be detected using visible absorption spectroscopy.…”

Section: Resultsmentioning

confidence: 99%

“…Perhaps, the best studied piezoelectric polymer is poly(vinylidene difluoride) ([CH 2 CF 2 ] n , PVDF) and related co-polymers. In this paper, we show that PVDF can be an effective piezocatalyst, as demonstrated for the decomposition of a common organic dye pollutant, rhodamine B (RhB). ,, …”

Section: Introductionmentioning

confidence: 99%

“…In this paper, we show that PVDF can be an effective piezocatalyst, as demonstrated for the decomposition of a common organic dye pollutant, rhodamine B (RhB). 15,21,23 PVDF can be found in multiple crystalline forms, primarily alpha, beta, and gamma phases, as shown in Scheme 1. 24−26 The phases differ by their relative conformations along the polymer chain.…”

Section: ■ Introductionmentioning

confidence: 99%

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Mechanistic Study of Rhodamine B Piezocatalytic Decomposition Using Poly(vinylidene difluoride) and Related Polymers

et al. 2023

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Membranes of poly(vinylidene difluoride) (PVDF) and related polymers are used as piezoelectric materials to decompose rhodamine B (RhB) under low power sonication. The change in the visible spectrum of RhB allows determination of the rate constants for different polymer compositions and membrane thicknesses. The results indicate that the piezoelectric field generated by mechanical deformation of the polymers catalyzes the scission of the C−N bond in RhB. When PVDF is doped with transition-metal nitrates to increase the fraction of the piezoelectric β-phase, the rate constants increase, but the analysis is complicated by concurrent adsorption of RhB onto the membrane. A mechanism consistent with the observed data is proposed where the piezocatalytic effect of the membrane is to heterolytically cleave the C−N bond followed by formation of a C−Cl bond on the new xanthene ring.

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“…The addition of (Dy 3+ , Sm 3+ , Yb 2+ , Eu 3+ and Gd 2+ ) dopants didn't seem to have effect on the XRD pattern (except that of Yb 2+ which caused more peak formation, JCPDS 00-43-1037) ) which suggests that these dopants were incorporated in the lattice. The XRD pattern showed that Zn 2 SnO 4 was still main phase, but few diffraction lines of ZnO (JCPDS, 79-0208) [21] and SnO 2 (JCPDS, 79-0208) [22] were observed. Lattice parameters as a function of composition is an important piece of information for nano or microstructure evolution.…”

Section: Theory/calculationsmentioning

confidence: 99%

Structural and optical properties of rare earth doped Zn₂SnO₄ nano-composites prepared via Sol-gel synthesis

Kadari,

Aissaoui,

El-Mesady

2023

Phys. Scr.

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Doped with different rare earth elements (Dy3+, Sm3+, Yb2+, Eu3+ and Gd2+), Zn2SnO4 nano-structures were synthesized using sol-gel process. Dopants were introduced in the prepared samples at concentrations of 0.034g. X-Rays Diffraction (XRD) results checked the crystallographic nature of the prepared materials. Using Scherrer's equation, the particles sizes were calculated and found to be almost 24 nm. The chemical bond types were identified through the Fourier Transform Infrared spectroscopy (FTIR). The dopants effect on the absorbance spectra was explored via the UV-Visible spectroscopy. The energy band gap (Eopt) of Zn2SnO4 decreased (from 3.89 eV to 2.80 eV) with dopants addition for direct transitions and ranged between 3.93-2.25 eV for indirect transitions. Similarly, Urbach energies (EU) were found within the range of 0.70- 0.42 eV. Results of the effect of the suggested dopants at those concentrations on the structure and optical properties of Zn2SnO4 could be considered to be utilized in the correct form in the industrial applications.

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High photocatalytic performance of copper-doped SnO2 nanoparticles in degradation of Rhodamine B dye

Cited by 32 publications

References 47 publications

Band Gap Tuning in Transition Metal and Rare-Earth-Ion-Doped TiO2, CeO2, and SnO2 Nanoparticles

Band Gap Tuning in Transition Metal and Rare-Earth-Ion-Doped TiO2, CeO2, and SnO2 Nanoparticles

Mechanistic Study of Rhodamine B Piezocatalytic Decomposition Using Poly(vinylidene difluoride) and Related Polymers

Structural and optical properties of rare earth doped Zn₂SnO₄ nano-composites prepared via Sol-gel synthesis

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High photocatalytic performance of copper-doped SnO2 nanoparticles in degradation of Rhodamine B dye

Cited by 32 publications

References 47 publications

Band Gap Tuning in Transition Metal and Rare-Earth-Ion-Doped TiO2, CeO2, and SnO2 Nanoparticles

Band Gap Tuning in Transition Metal and Rare-Earth-Ion-Doped TiO2, CeO2, and SnO2 Nanoparticles

Mechanistic Study of Rhodamine B Piezocatalytic Decomposition Using Poly(vinylidene difluoride) and Related Polymers

Structural and optical properties of rare earth doped Zn2SnO4 nano-composites prepared via Sol-gel synthesis

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Product

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Structural and optical properties of rare earth doped Zn₂SnO₄ nano-composites prepared via Sol-gel synthesis