Effect of co-doped (Ni2+:Co2+) in CdS nanoparticles: investigation on structural and magnetic properties

Muruganandam, S.; Parivathini, K.; Murugadoss, Govindhasamy

doi:10.1007/s00339-021-04555-0

Cited by 13 publications

(5 citation statements)

References 44 publications

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“…As CdS QDs deposition on the RT surface, the absorption inset is shifted from ultraviolet to the visible region at about 520 nm. Furthermore, Co 2+ doped CdS QDs also is shifted further visible region, suggesting Co 2+ replaced among both valence and conduction band energy levels of CdS QDs and supplied further electron transfer [ 54 , 55 ]. Also, adding Co 2+ in the CdS QDs, can be concluded that the Co 2+ loading quantity of QDs enabled to increase in the deposition of QDs on the RT boundary.…”

Section: Resultsmentioning

confidence: 99%

Architecture design of TiO2 with Co-doped CdS quantum dots photoelectrode for water splitting

TEZCAN,

AHMAD,

KARDAŞ

2023

Turkish Journal of Chemistry

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Photoelectrochemical hydrogen production is a critical key to solving the carbon-zero goal of countries due to renewable sources of solar light and combustion products of hydrogen-only water. Here, an architecture design for an n-type nano rosettes-rod TiO 2 (RT) surface using CdS and Co-doped CdS quantum dots (QDs) is carried out utilizing the SILAR (simple ionic layer adsorption and reaction) method. Furthermore, the photocatalytic behaviour of Co-doped CdS QDs SILAR cycles deposition is investigated in various cycles, including 5, 8, 10, and 12. The FESEM, Raman XRD, Uv-Vis spectrometer, and vibration modes are used to evaluate the photoelectrode surface structure, crystal structure, and solar light absorption, respectively. FESEM images and XRD pattern revealed successive CdS QDS and Co-doped CdS QDs deposition on the RT boundary and rising SILAR cycles of Co-doped CdS QDs lead to further coverage of RT surface. UV-vis spectrometer indicated shifting solar light absorption to the visible region by applying more SILAR cycles of Co-doped CdS QDs deposition. The electrochemical parameters obtained from EIS showed total polarization resistance (R p ) of the RT electrode dramatically decreased with 10 SILAR cycle Co-doped CdS QDs deposition (5093 Ω cm 2 and 617 Ω cm 2 ). Linear sweep voltammetry (LSV) and chronoamperometric photocatalytic performance measurements indicated Co-doped CdS QDs on RT extremely enhanced photoresponse under solar irradiation and 10 SILAR cycle Co-doped CdS QDs improved photocurrent density about fourfold according to blank RT electrode.

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Section: Resultsmentioning

confidence: 99%

Architecture design of TiO2 with Co-doped CdS quantum dots photoelectrode for water splitting

TEZCAN,

AHMAD,

KARDAŞ

2023

Turkish Journal of Chemistry

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“…This is the evidence for lowering the crystallite size with increasing Co 2+ concentration (15) . The average crystallite sizes estimated using the Debye Scherer formula (1,6) , for as-prepared nanoparticles are shown in Table 1. As can be seen from the table, average particle sizes vary from 1.57 nm to 2.01 nm.…”

Section: Structural Studiesmentioning

confidence: 99%

“…In II-VI semiconductor compounds, CdS is a wide band gap semiconductor useful in heterojunction solar cells, light-emitting diodes, address decoders, biological sensors, photocatalytic devices, and gas detectors (1) . The band gap is easily tunable by replacing a small number of cation impurities as well as anion impurities (2) .…”

Section: Introductionmentioning

confidence: 99%

“…Among all the transition metals, due to the smaller ionic radius (79 pm), Co 2+ easily substitutes Cd 2+ (ionic radius 109 pm) in the lattice of cadmium sulfide. Many researchers prepared and studied Co 2+ doped and co-doped with other transitional elements in CdS (1,5) . Giribabu et al, prepared Co 2+ as a dopant and co-dopant in CdS nanoparticles and reported structural, optical, and magnetic properties (8) .…”

Section: Introductionmentioning

confidence: 99%

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Tailoring the Inherent Magnetism of N:CdS Nanoparticles with Co2+ Doping

Reddy¹,

Vandana²,

Kumar³

2023

IJST

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Objectives:The purpose of this study is to report the changes in structural, electrical, optical, and magnetic properties of N: CdS nanoparticles with Co 2+ doping, which have applications in the fields of opto-magnetic and spintronic devices. Methods: Nitrogen and cobalt-co-doped CdS nanoparticles (NPs) have been prepared using the surfactant-assisted chemical co-precipitate method. Findings: The X-Ray Diffraction (XRD) studies with X'pert High Score Plus software confirm the existence of multiphase and the size of the as prepared particles in the nanorange (1-2 nm). UV-VIS. absorption spectral analysis showed a considerable blue shift with the inclusion of nitrogen and a further Burstein-mass effect, i.e., a red shift with increasing Co 2+ ion concentration. The strong green light emissions observed in photoluminescence (PL) studies are attributed to the trapping of Co 2+ and N 3ions in F-centers. The characteristic g = 1.995 obtained from electron paramagnetic resonance (EPR) studies confirms the inclusion of nitrogen in the tetrahedral sites of the CdS core and the increased stability of nanoparticles. The vibrating sample magnetometer (VSM) studies revealed novel magnetic behaviour of nanoparticles at low fields. Novelty: Tunable band gap variations, ferromagnetic nature at low fields are the unique features observed in NPs with useful applications in the fields of opto-magnetic and spintronic applications. Nitrogen and cobalt-co-doped CdS nanoparticles (NPs) have been prepared using the surfactant assisted chemical co-precipitate method. The X-ray diffraction (XRD) studies with X'pert high score plus software confirm the existence of multiple phases and the size of the as prepared particles in the nanorange (1-2nm). UV-VIS absorption spectral analysis showed a considerable blue shift with the inclusion of nitrogen and a further Burstein-mass effect, i.e., a red shift with increasing Co 2+ ion concentration. The strong green light emission observed in photoluminescence (PL) studies is attributed to the trapping of Co 2+ , N 3ions in F-centers. The characteristic g = 1.995 obtained from electron paramagnetic resonance (EPR) studies confirms the inclusion of nitrogen in the tetrahedral sites of the CdS core and the increased stability of nanoparticles. The vibrating sample magnetometer (VSM) studies revealed novel magnetic behaviour of nanoparticles at low fields.

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“…The peaks (2θ) values at 18.44 • , 24.82 • , 26.52 • , 28.20 • , 32.20 • , 35.69 • , 36.50 • , 43.71 • , 47.88 • , 51.86 • and 52.64• are corresponding planes of (1 1 0), (1 0 0), (0 0 2), (1 0 1), (3 0 0), (0 2 1), (1 0 2), (1 1 0), (1 0 3), (1 1 2) and (4 0 1). Because of the size difference between the ions Cd 2+ and Ni 2+ , there is little compressive micro strain in the lattice, which causes peak broadening and peak shifts in the reflection planes[27]. Similarly, the XRD pattern for Ni-Cd-S and Ni-Cd-S/rGO, shows mixed crystalline faces of the NiS and CdS.…”

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confidence: 99%

Nickel-Cadmium-Sulfide Anchored on rGO Nanocomposite for Removal of Textile Industry Dyes

et al. 2022

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The design and development of a novel route for the preparation of efficient photocatalysts for the treatment of polluted water is an essential need. Due to rapid expansion of pharmaceutical and textile industries, the discharge of drugs and sewage contaminants leads to water contamination. To address these issues, hydrothermally synthesized Ni−Cd−S/rGO nanocomposite with a cauliflower structure was developed. The prepared nanocomposite was studied using advanced characterization techniques to confirm crystal structure, surface morphology, optical studies and material composition in detail. Further, the photodegradation process of textile-based Methylene Blue (MB) and Methyl Orange (MO) dyes using Ni−Cd−S/rGO nanocomposite with desired time interval under natural sunlight was also investigated. The maximum photocatalytic performance of > 90% was achieved for the photocatalyst. The photodegradation rate can be maintained after 5 recycling tests in the presence of MB and MO dyes. The remarkable degradation efficiency, high rate constant and reusability of the Ni−Cd−S/rGO nanocomposite make it an excellent choice for textile effluent treatment.

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Effect of co-doped (Ni2+:Co2+) in CdS nanoparticles: investigation on structural and magnetic properties

Cited by 13 publications

References 44 publications

Architecture design of TiO2 with Co-doped CdS quantum dots photoelectrode for water splitting

Architecture design of TiO2 with Co-doped CdS quantum dots photoelectrode for water splitting

Tailoring the Inherent Magnetism of N:CdS Nanoparticles with Co2+ Doping

Nickel-Cadmium-Sulfide Anchored on rGO Nanocomposite for Removal of Textile Industry Dyes

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