RETRACTED: Morphological, optical and structural analysis in CdS, CdS-CdCO3 and CdCO3 thin solid films grown by chemical bath

Moreno, O. Portillo; Pérez, R. Gutiérrez; Portillo, M. Chávez; Garcı́a, M.; Moreno, Gloria E.; Cruz, S. Cruz; Rosas, E. Rubio; Lascano, M. Hernandez

doi:10.1016/j.ijleo.2017.11.036

Cited by 26 publications

(14 citation statements)

References 27 publications

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“…Presence of this last re ection might suggest that the precursor solution used in this work favors the formation of a predominantly hexagonal phase. Similar outcomes have been reported by several research groups in CdS thin lms obtained by chemical bath deposition in basic medium [22][23][24]. On the contrary, note that, in the XRD patterns for the samples L1, L2, L3, and L4, neither CuS nor Cu 2 S di raction maxima are observed, indicating that these phases were not formed during the immersion process.…”

Section: Structural Propertiessupporting

confidence: 89%

Copper Incorporation into CdS Thin Films by Ionic Exchange in an Aqueous Solution Process at Room Temperature

Flores-García

Hernández-Landaverde

González‐García

et al. 2018

Journal of Spectroscopy

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Cadmium sulfide (CdS) thin films were deposited, on glass substrates, at 70°C for 120 min using an ammonium-free chemical bath deposition process. After deposition, the films were placed in a CuCl2 solution for 45, 60, 75, and 90 min, respectively, for their ion exchange, generating CdxCu1-xS films. The obtained films were analyzed by X-ray diffraction, Raman spectroscopy, X-ray wavelength dispersion spectrometry, and scanning electron microscopy. The reference CdS films showed a homogeneous appearance and a yellowish color; elapsing the immersion time, the films changed their color showing a greenish appearance. The X-ray analysis indicated that the CdS films developed a hexagonal structure with preferential orientation along the plane (002). During the ion exchange, a decrease in the intensity of the reflection (002) was observed as well as a slight displacement of this reflection towards higher values of 2θ derived from the substitution of Cd atoms by Cu atoms. The WDS analysis revealed that approximately 10% of the cadmium atoms were replaced by copper ones after 90 min of immersion.

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Section: Structural Propertiessupporting

confidence: 89%

Copper Incorporation into CdS Thin Films by Ionic Exchange in an Aqueous Solution Process at Room Temperature

Flores-García

Hernández-Landaverde

González‐García

et al. 2018

Journal of Spectroscopy

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“…25,26 Three bands in the CN/CC/CS spectrum at approximately 701, 1100, and 2350 cm −1 are attributed to the vibration modes of Cd–O in CC, 27 Cd–S in CS, 28 and CO 3 2− ions, respectively, as well as CO 2 on the surfaces of samples. 21,27 Notably, the undetected band at 810 cm −1 of the CN/CC/CS spectrum indicates a severe change in tri-s-triazine units in CN. 29 This phenomenon may be due to the interaction between CN and multiple precursors in the synthesis procedure.…”

Section: Resultsmentioning

confidence: 99%

“…The CS peak around 500 cm −1 of the CN/CC/CS sample is stronger than that of CN/CS, and a small shoulder ascribed to CC is detected at 169 cm −1 (inset). 20,21 The FTIR spectra (Fig. 2c) show absorption bands located between 1200 and 1700 cm −1 that can be ascribed to CN heterocyclic stretching modes.…”

Section: Structure and Morphology Of Photocatalystsmentioning

confidence: 99%

In situ bridging nanotwinned all-solid-state Z-scheme g-C₃N₄/CdCO₃/CdS heterojunction photocatalyst by metal oxide for H₂ evolution

et al. 2022

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“…The energetic polarization of the ionic species (ions and cations, including the solvent) present in the aqueous solution correlates linearly with the magnitude of the electric field, which is difficult to predict exactly and is still under study [20]. For the kinetic mechanism considered here by us, the carbonate CO 2− 3 ion has been identified in aqueous solution through FT-IR studies, hydrolysis of thiourea SC (NH 2 ) 2 generates CO 2− 3 , ion an NH 3 molecules [13,15,21]…”

Section: Chemical Reactions and Experimental Proceduresmentioning

confidence: 98%

“…The experimental details associated with the crystal growth parameters applying the green (CBD) technique, have been previously reported [14,15,17,21,[24][25][26]28]. Now, a brief report is presented considering only the most relevant experimental details for crystal growth.…”

Section: Preparation Of the Powdersmentioning

confidence: 99%

Green chemistry synthesis and structural and optical study of Dy2(CO3)3→ Dy2O3 transition

Portillo

Portillo²,

Santiesteban³

et al. 2023

Rev. Mex. Fís.

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This paper presents preliminary results of Dy2(CO3)3→Dy2O3 transition have been successfully obtained by Chemical Bath Deposition technical and subsequent thermal annealing temperature at ~600 °C. Two different temperatures of ~20°C and ~90 °C ± 2 °C are chosen to carry out the nanocrystalline growth. The crystalline phase is investigated by applying X-Ray Diffraction (XRD) and some optical properties; Transmittance, Reflectivity, Normalized Absorbance, real (n) and imaginary (k) parts refractive index. The crystalline phase of these inorganic nanomaterials for Dy2(CO3)3 is orthorhombic phase, while for Dy2O3 it is cubic. Grain size average values located at ranged ~2.8-3.4 nm for Dy2(CO3)3 and ~6.5-9.6 nm for Dy2O3. Vibrational modes are identified by Raman spectroscopy, modes at ~150-1800 cm-1 frequency range assigned to internal vibrations of ion: v1-symmetric stretching (~1098 cm-1) v3-asymmetric -C-O stretching situated at ∼1063 cm-1, were observed corresponding to orthorhombic crystalline phase. The Fg+ Ag and A1g modes, corresponding to cubic phase Dy2O3. Multiple absorption bands with different relative intensities are observed at UV-Vis-NIR region, assigned to 4fs→4fs intra-electronic transitions and band gap energy. Absorption measurement were assigned to the transitions from ground state (6H15/2) to different excited states such as 4I13/2→4F7/2, 4I15/2, 6F3/2, 6F5/2, 6F7/2→6H5/2, 6F9/2→6H7/2, 6F11/2→6H9/2 and 6H11/2 of Dy3+ cation. Tauc’s plot reveals band gap situated at range ~4.66-5.17 eV for Dy2(CO3)3 and ~4.26-4.80 eV for Dy2O3 respectively.

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RETRACTED: Morphological, optical and structural analysis in CdS, CdS-CdCO3 and CdCO3 thin solid films grown by chemical bath

Cited by 26 publications

References 27 publications

Copper Incorporation into CdS Thin Films by Ionic Exchange in an Aqueous Solution Process at Room Temperature

Copper Incorporation into CdS Thin Films by Ionic Exchange in an Aqueous Solution Process at Room Temperature

In situ bridging nanotwinned all-solid-state Z-scheme g-C₃N₄/CdCO₃/CdS heterojunction photocatalyst by metal oxide for H₂ evolution

Green chemistry synthesis and structural and optical study of Dy2(CO3)3→ Dy2O3 transition

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RETRACTED: Morphological, optical and structural analysis in CdS, CdS-CdCO3 and CdCO3 thin solid films grown by chemical bath

Cited by 26 publications

References 27 publications

Copper Incorporation into CdS Thin Films by Ionic Exchange in an Aqueous Solution Process at Room Temperature

Copper Incorporation into CdS Thin Films by Ionic Exchange in an Aqueous Solution Process at Room Temperature

In situ bridging nanotwinned all-solid-state Z-scheme g-C3N4/CdCO3/CdS heterojunction photocatalyst by metal oxide for H2 evolution

Green chemistry synthesis and structural and optical study of Dy2(CO3)3→ Dy2O3 transition

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In situ bridging nanotwinned all-solid-state Z-scheme g-C₃N₄/CdCO₃/CdS heterojunction photocatalyst by metal oxide for H₂ evolution