Synthesis and characterization of cobalt sulfide nanoparticles by sonochemical method

Muradov, M. B.; Balayeva, Ofeliya O.; Azizov, Abdulsaid A.; Maharramov, Abel M.; Qahramanli, Lala R.; Eyvazova, Goncha M.; Aghamaliyev, Z. A.

doi:10.1016/j.infrared.2018.01.014

Cited by 65 publications

(21 citation statements)

References 30 publications

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“…The broad peak with high intensity centered at 240 o C accompanied with a well-de ned shoulder at higher temperature (290 o C) can be ascribed to the reduction of CoS to Co 0 . This reduction temperature is much lower than the literature report, which means the surface Co-S bonds are more unstable and easier to be reduced[29]. The shoulder observed at 290 o C can imply the reduction of Co 3+ to Co 2+ .…”

contrasting

confidence: 58%

Further Use of Spent Co-Based Macroporous Adsorbent for Low-Temperature Hydrodesulfurization

Feng

Wang

Yang

et al. 2022

J Inorg Organomet Polym

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Solid waste Co-containing adsorbents are considered to be used for the hydrotreating process. Herein, Cobalt-based waste materials from the low-temperature desulfurization process were used as organic sulfur hydrotreating catalysts. Physicochemical properties of waste adsorbents were characterized and the performance for COS conversion was evaluated at different conditions. The spent Co-containing adsorbents exhibit considerable organic sulfur hydrogenation performance at low temperature, the residual cobalt oxide in sul ded samples will absorb part of hydrogen sul de and generate new active phase Co 9 S 8 . By further characterization, it can be found that the unstable Co-S bond on the surface of the sample played a key role in hydrogenation catalysis. Results indicated that the sul dation degree of the waste adsorbents played a key role in the hydrotreating process. With the temperature increasing from 150~250 ℃, the conversion rate and H 2 S selectivity were increased. It is hoped that this paper will provide signi cant suggestions in waste adsorbents treatment for future work.

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contrasting

confidence: 58%

Further Use of Spent Co-Based Macroporous Adsorbent for Low-Temperature Hydrodesulfurization

Feng

Wang

Yang

et al. 2022

J Inorg Organomet Polym

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“…The HRTEM images revealed that CuS with smaller particles sizes were obtained at 2 h due to the Oswald ripening process because of the longer reaction time [ 38 ]. The agglomeration observed in the HRTEM images of CuS 1 and CuS 2 could be due to high surface energy [ 39 ]. The results suggest that the thermolysis time influences the shapes and particle sizes of the as-prepared CuS nanoparticles.…”

Section: Resultsmentioning

confidence: 99%

Enhanced Photocatalytic Degradation of Ternary Dyes by Copper Sulfide Nanoparticles

Ajibade

Oluwalana

2021

Nanomaterials

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We report the effect of thermolysis time on the morphological and optical properties of CuS nanoparticles prepared from Cu(II) dithiocarbamate single-source precursor. The as-prepared copper sulfide nanoparticles were used as photocatalysts for the degradation of crystal violet (CV), methylene blue (MB), rhodamine B (RhB), and a ternary mixture of the three dyes (CV/MB/RhB). Powder XRD patterns confirmed the hexagonal covellite phase for the CuS nanoparticles. At the same time, HRTEM images revealed mixed shapes with a particle size of 31.47 nm for CuS1 prepared at 30 min while CuS2 prepared at 1 h consists of mixtures of hexagonal and nanorods shaped particles with an average size of 21.59 nm. Mixed hexagonal and spherically shaped particles with a size of 17.77 nm were obtained for CuS3 prepared at 2 h. The optical bandgaps of the nanoparticles are 3.00 eV for CuS1, 3.26 eV for CuS2 and 3.13 eV for CuS3. The photocatalytic degradation efficiency showed that CuS3 with the smallest particle size is the most efficient photocatalyst and degraded 85% of CV, 100% of MB, and 81% of RhB. The as-prepared CuS showed good stability and recyclability and also degraded ternary dyes mixture (CV/MB/RhB) effectively. The byproducts of the dye degradation were evaluated using ESI-mass spectrometry.

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“…The complexation factor plays an important role in the formation of CdS surface morphology and its deposition on the substrate 84 . Thus, the addition of MPA improved the reaction rate and offered a sufficient concentration of sulfur ions for increasing their probability of colliding with the Cd 2+ , thereby yielding a homogenous CdS thin layer surface and uniform pore diameter, after their reaction with the ends of thiol groups 85 . Preparation of small particles with systematically controlled size yields a compact and homogeneous layer due to the surface complexation reaction was seen to be an appealing technique.…”

Section: +mentioning

confidence: 99%

An in-depth analysis of nucleation and growth mechanism of CdS thin film synthesized by chemical bath deposition (CBD) technique

Najm

Naeem

Majdi³

et al. 2022

Sci Rep

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The aim of this study is to acquire a deeper understanding of the response mechanism that is associated with the formation of CdS thin films. We presented an effective and new hybrid sensitisation technique, which involved the 1-step linker between the related chemical bath deposition (CBD) process and the traditional doping method during CBD for synthesising high-quality, CdS thin films. The mechanism for the combined synthesis of the films is also describes. CdS films were electrostatically bonded to soda-lime glass, causing the formation of the intermediate complexes [Cd(NH3)4]2+, which aided in the collision of these complexes with a soda-lime glass slide. In the one-step fabrication technique, 3-Mercaptopropionic Acid (MPA) was employed as a second source of sulphur ions and a linker molecule. Optical studies showed that the bandgap ranged between (2.26–2.52) eV. CdS + MPA films exhibited a uniform distribution of spherical molecules based on their morphological properties. After annealing, this approach significantly altered the electrical characteristics of CdS films. The CdS + MPA films displayed the highest carrier concentration whereas the CdS + Ag + MPA films exhibited the lowest resistivity, with a jump of 3 orders of magnitude.

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Synthesis and characterization of cobalt sulfide nanoparticles by sonochemical method

Cited by 65 publications

References 30 publications

Further Use of Spent Co-Based Macroporous Adsorbent for Low-Temperature Hydrodesulfurization

Further Use of Spent Co-Based Macroporous Adsorbent for Low-Temperature Hydrodesulfurization

Enhanced Photocatalytic Degradation of Ternary Dyes by Copper Sulfide Nanoparticles

An in-depth analysis of nucleation and growth mechanism of CdS thin film synthesized by chemical bath deposition (CBD) technique

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