The effect of deposition cycles on intrinsic and electrochemical properties of metallic cobalt sulfide by Simple chemical route

Ighodalo, Kester O.; Ezealigo, Blessing N.; Agbogu, Ada; Nwanya, Assumpta C.; Obi, Daniel; Mammah, Sylvester Lekoo; Botha, Subelia; Bucher, R.; Mâaza, M.; Ezema, Fabian I.

doi:10.1016/j.mssp.2019.05.015

Cited by 9 publications

(2 citation statements)

References 58 publications

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“…The observed decrease when increasing the deposition temperature is due to the improvement of the crystallinity of the films, removal of defects, and the reduction of the grain boundary density. In addition, the absorption coefficient values are close to those values reported in the literature [31]. The optical band gap of the material was determined using the following formula [26]:…”

Section: Optical Analysissupporting

confidence: 72%

Substrate Temperature Effect on the Structural, Optical and Morphological Proprties of Cobalt Sulfide Thin Films Deposited Using Spray Pyrolisis

Gahtar,

Zaouche,

Maouane

et al. 2024

Annals of West University of Timisoara - Physics

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Thin films of cobalt sulfide were grown on glass substrates at four different temperatures (250 °C, 300 °C, 350 °C and 400 °C) using spray-pyrolysis technique. The precursor solutions were prepared using cobalt chloride and thiourea. The effect of deposition temperature on the structural, morphological, and optical properties of cobalt sulfide thin films was investigated using different experimental techniques such as X-ray diffraction (XRD), and UV-visible spectrophotometry, Fourier Transform Infrared Spectroscopy (FT-IR) and four-probe method. The XRD analysis showed that crystallite size varies from 9.76 to 14.11 nm with increasing the deposition temperature. UV-visible data analysis shows a decrease in the band gap energies with increasing temperature (1.82 eV for 250 °C, 1.76 eV for 300 °C, 1.72 eV for 350 °C, and 1.65 eV for 400 °C). The analysis of the chemical composition by FTIR confirmed the presence of Co, S elements. On the other hand, the electrical conductivity of the cobalt sulfide thin films increased owing to the increase in the crystallite size and reduction of defects density.

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Section: Optical Analysissupporting

confidence: 72%

Substrate Temperature Effect on the Structural, Optical and Morphological Proprties of Cobalt Sulfide Thin Films Deposited Using Spray Pyrolisis

Gahtar,

Zaouche,

Maouane

et al. 2024

Annals of West University of Timisoara - Physics

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show abstract

“…In addition to the several most commonly used methods mentioned above, chemical vapor deposition (CVD) [43], microwave-assisted methods [44,45], and template-assisted methods [46] have also been used to prepare cobalt sulfide-based hybrid materials. The CVD method often requires a cumbersome manufacturing process or expensive equipment, and the prepared cobalt sulfide-based composites have poor water solubility.…”

Section: Other Methodsmentioning

confidence: 99%

Recent Developments and Perspectives of Cobalt Sulfide-Based Composite Materials in Photocatalysis

Chen

Hao

et al. 2023

Catalysts

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Photocatalysis, as an inexpensive and safe technology to convert solar energy, is essential for the efficient utilization of sustainable renewable energy sources. Earth-abundant cobalt sulfide-based composites have generated great interest in the field of solar fuel conversion because of their cheap, diverse structures and facile preparation. Over the past 10 years, the number of reports on cobalt sulfide-based photocatalysts has increased year by year, and more than 500 publications on the application of cobalt sulfide groups in photocatalysis can be found in the last three years. In this review, we initially summarize the four common strategies for preparing cobalt sulfide-based composite materials. Then, the multiple roles of cobalt sulfide-based cocatalysts in photocatalysis have been discussed. After that, we present the latest progress of cobalt sulfide in four fields of photocatalysis application, including photocatalytic hydrogen production, carbon dioxide reduction, nitrogen fixation, and photocatalytic degradation of pollutants. Finally, the development prospects and challenges of cobalt sulfide-based photocatalysts are discussed. This review is expected to provide useful reference for the construction of high-performance cobalt sulfide-based composite photocatalytic materials for sustainable solar-chemical energy conversion.

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Effect of calcination temperature on structural, optical and antibacterial properties of ball mill synthesized Co3O4 nanomaterials

Singh

Jain

et al. 2022

J Mater Sci: Mater Electron

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The effect of deposition cycles on intrinsic and electrochemical properties of metallic cobalt sulfide by Simple chemical route

Cited by 9 publications

References 58 publications

Substrate Temperature Effect on the Structural, Optical and Morphological Proprties of Cobalt Sulfide Thin Films Deposited Using Spray Pyrolisis

Substrate Temperature Effect on the Structural, Optical and Morphological Proprties of Cobalt Sulfide Thin Films Deposited Using Spray Pyrolisis

Recent Developments and Perspectives of Cobalt Sulfide-Based Composite Materials in Photocatalysis

Effect of calcination temperature on structural, optical and antibacterial properties of ball mill synthesized Co3O4 nanomaterials

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