Nanofabrication and functional characterization of Co9-xNixS8 nanoparticles for optoelectronic applications

Arafat, Shadia W.; Mohamed, Mohamed Bakr; Sanad, Moustafa M.S.; Elshimy, Hassan; AlSalem, Huda S.; Alenad, Asma M.; Taha, T.A.

doi:10.1016/j.optmat.2022.112561

Cited by 7 publications

(5 citation statements)

References 72 publications

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“…The analyzed Co2p spectra (Fig. 6 b) show two Co2p 3/2 peaks around 781.28 and 783.58 eV, and the related satellite at 787.38 eV, characteristic of Co 3+ and Co 2+ , respectively 57 . Alongside, two Co2p 1/2 peaks with binding energies 797.08 eV and 799.08 eV, correspond to Co 3+ and Co 2+ , respectively, and the related satellite at 803.28 eV 58 .…”

Section: Resultsmentioning

confidence: 97%

Novel mixed heterovalent (Mo/Co)Ox-zerovalent Cu system as bi-functional electrocatalyst for overall water splitting

Tartour,

Sanad,

El-Hallag

et al. 2024

Sci Rep

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A novel hybrid ternary metallic electrocatalyst of amorphous Mo/Co oxides and crystallized Cu metal was deposited over Ni foam using a one-pot, simple, and scalable solvothermal technique. The chemical structure of the prepared ternary electrocatalyst was systematically characterized and confirmed via XRD, FTIR, EDS, and XPS analysis techniques. FESEM images of (Mo/Co)Ox–Cu@NF display the formation of 3D hierarchical structure with a particle size range of 3–5 µm. The developed (Mo/Co)Ox–Cu@NF ternary electrocatalyst exhibits the maximum activity with 188 mV and 410 mV overpotentials at 50 mA cm−2 for hydrogen evolution reaction (HER) and oxygen evolution reaction (OER), respectively. Electrochemical impedance spectroscopy (EIS) results for the (Mo/Co)Ox–Cu@NF sample demonstrate the minimum charge transfer resistance (Rct) and maximum constant phase element (CPE) values. A two-electrode cell based on the ternary electrocatalyst just needs a voltage of about 1.86 V at 50 mA cm−2 for overall water splitting (OWS). The electrocatalyst shows satisfactory durability during the OWS for 24 h at 10 mA cm−2 with an increase of only 33 mV in the cell potential.

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Section: Resultsmentioning

confidence: 97%

Novel mixed heterovalent (Mo/Co)Ox-zerovalent Cu system as bi-functional electrocatalyst for overall water splitting

Tartour,

Sanad,

El-Hallag

et al. 2024

Sci Rep

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show abstract

“…[213,214] Arafat et al synthesized Co 9-x Ni x S 8 NPs with different Ni content (x = 2.6, 3, and 3.4) using a solvothermal method. [202] Figure 8a shows the corresponding results. Spectroscopic analysis showed that Ni ions were integrated into the Co 9 S 8 lattice in some samples, while others showed segregation of Co ions forming an oxide phase.…”

Section: D Nanomaterialsmentioning

confidence: 99%

“…0D NPs can improve the performance of optoelectronic devices in several ways, such as enhancing the electrical conductivity, suppressing the recombination of charge carriers, and reducing the charge carrier recombination loss. [65,202] In particular, carbon NPs (CNPs) have been shown to improve the efficiency and stability of PDs, and also offer potential for customization of optoelectronic properties, making them a promising option for future developments in this field. CNPs, such as graphene quantum dots (GQDs), [66,67,[203][204][205][206] carbon dots (CDs), [207] and polymer dots, [208] have garnered attention due to their cheap, environmentally friendly synthesis methods, easy functionalization, tunable visible-to-NIR emission with high photoluminescence quantum yields, ability to be processed into large area thin films, and nontoxic nature, making them promising for opto-and bioapplications.…”

Section: D Nanomaterialsmentioning

confidence: 99%

Section: Low‐dimensional Nanomaterial‐based Pdsmentioning

confidence: 99%

mentioning

confidence: 99%

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Recent Advances in Low‐Dimensional Nanomaterials for Photodetectors

Kim

Lee

et al. 2023

Small Methods

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New emerging low‐dimensional such as 0D, 1D, and 2D nanomaterials have attracted tremendous research interests in various fields of state‐of‐the‐art electronics, optoelectronics, and photonic applications due to their unique structural features and associated electronic, mechanical, and optical properties as well as high‐throughput fabrication for large‐area and low‐cost production and integration. Particularly, photodetectors which transform light to electrical signals are one of the key components in modern optical communication and developed imaging technologies for whole application spectrum in the daily lives, including X‐rays and ultraviolet biomedical imaging, visible light camera, and infrared night vision and spectroscopy. Today, diverse photodetector technologies are growing in terms of functionality and performance beyond the conventional silicon semiconductor, and low‐dimensional nanomaterials have been demonstrated as promising potential platforms. In this review, the current states of progress on the development of these nanomaterials and their applications in the field of photodetectors are summarized. From the elemental combination for material design and lattice structure to the essential investigations of hybrid device architectures, various devices and recent developments including wearable photodetectors and neuromorphic applications are fully introduced. Finally, the future perspectives and challenges of the low‐dimensional nanomaterials based photodetectors are also discussed.

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Fabrication of Ni3S2-functionalized V2O3 nanospheres as promising anode materials for rechargeable batteries and supercapacitors

et al. 2023

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Nanofabrication and functional characterization of Co9-xNixS8 nanoparticles for optoelectronic applications

Cited by 7 publications

References 72 publications

Novel mixed heterovalent (Mo/Co)Ox-zerovalent Cu system as bi-functional electrocatalyst for overall water splitting

Novel mixed heterovalent (Mo/Co)Ox-zerovalent Cu system as bi-functional electrocatalyst for overall water splitting

Recent Advances in Low‐Dimensional Nanomaterials for Photodetectors

Fabrication of Ni3S2-functionalized V2O3 nanospheres as promising anode materials for rechargeable batteries and supercapacitors

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