Colloidal synthesis of copper cadmium sulphide (CuCdS 2 ) nanoparticles and its structural, optical and morphological properties

Saravanan, K.; Suriakarthick, R.; Soosaimanickam, Ananthakumar; Babu, S. Moorthy; Selvasekarapandian, S.

doi:10.1016/j.mssp.2017.03.028

Cited by 18 publications

(12 citation statements)

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“…The CoS 2 spectrum shows two main peaks at around 329 and 352 cm −1 , which is associated with Co‐S vibration and a small hump at ~287 cm −1 corresponding to E g mode (sulphur dumbbells librational vibration) of the CoS 2 structure . An intense and broad vibrational peak centred at 474 cm −1 present in the CuS spectrum is associated with A 1g mode (symmetric stretching of S‐S ions at the 4e site), and the less intense peak at ~558 cm −1 could originate from 2LO (overtone longitudinal phonon) . The Raman spectrum of the CuCo 2 S 4 electrode film shows a total of four vibrational peaks at 267, 305, ~329, and ~352 cm −1 .…”

Section: Resultsmentioning

confidence: 78%

“…54,55 An intense and broad vibrational peak centred at 474 cm −1 present in the CuS spectrum is associated with A 1g mode (symmetric stretching of S-S ions at the 4e site), and the less intense peak at~558 cm −1 could originate from 2LO (overtone longitudinal phonon). 56,57 The Raman spectrum of the CuCo 2 S 4 electrode film shows a total of four vibrational peaks at 267, 305,~329, and~352 cm −1 . The peaks at 267 and 305 cm −1 are associated with the vibration of the Cu-S and Cu-S-Cu bond, and the reaming two peaks are ascribed to Co-S vibration, confirming the formation of CuCo 2 S 4 .…”

Section: Eletrochemical Examinationmentioning

confidence: 99%

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Fabrication of FeO@CuCo ₂ S ₄ multifunctional electrode for ultrahigh‐capacity supercapacitors and efficient oxygen evolution reaction

et al. 2019

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Summary The outstanding multifunctional electrochemical properties of chalcogenide‐based FeO@CuCo2S4, such as electrochemical energy storage (EES) and electrocatalytic oxygen evolution reaction are demonstrated. The FeO@CuCo2S4 film is fabricated using a two‐step synthesis procedure. First, CuCo2S4 was grown on 3D porous nickel foam substrate using a mild hydrothermal growth technique, onto which FeO was then deposited via a magnetron sputtering. The FeO@CuCo2S4 film shows a cordillera‐like morphology with a uniformly distributed island‐like nanospheres on its surface. The optimized FeO@CuCo2S4 electrode delivers an ultrahigh specific capacitance of 3213 F g−1 at 1 A g−1. This FeO@CuCo2S4 electrode shows superior capacity retention and coulombic efficiency of ~116% and ~99%, respectively, after 10 000 charge/discharge stability cycles. Moreover, this superior electrode is also serves as an OER electrocatalyst in alkaline solution (1 M aqueous KOH), demonstrating better catalytic activity by attaining a low overpotential of ~240 mV at 10 mA cm−2 and a small Tafel slope of 51 mV dec−1. This FeO@CuCo2S4 catalyst has excellent current rate performance and endurance properties at a high current density rate of up to 100 mA cm−2 even after 25 hours. The post‐measurement HR‐TEM, EDS‐STEM mapping, and Raman analysis reveal the phase transformation of FeO@CuCo2S4 upon electro‐oxidation.

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Section: Resultsmentioning

confidence: 78%

Section: Eletrochemical Examinationmentioning

confidence: 99%

Fabrication of FeO@CuCo ₂ S ₄ multifunctional electrode for ultrahigh‐capacity supercapacitors and efficient oxygen evolution reaction

et al. 2019

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“…In this way, the composition-dependent band gap can be tuned with the increase in Cu content since VB is pushed toward a higher energy, and thereby, the band gap is decreased. 19,37,38 In CCS QDs, as the Cu content increases from 2 to 10 mM, the band gap decreases from 3.09 to 2.91 eV, as shown in Figure 1c.…”

Section: Resultsmentioning

confidence: 81%

Cu-Enhanced Efficient Förster Resonance Energy Transfer in PBSA Sunscreen-Associated Ternary Cu_xCd_1–xS Quantum Dots

et al. 2022

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Quantum dots (QDs) are semiconducting nanocrystals that exhibit size- and composition-dependent optical and electronic properties. Recently, Cu-based II–VI ternary Cu x Cd 1– x S (CCS) QDs have emerged as a promising class of QDs as compared to their binary counterparts (CuS and CdS). Herein, a series of ternary CCS QDs are synthesized by changing the molar concentration of Cu 2+ ions only keeping the 1:1 ratio of the stoichiometric mixture of Cd 2+ and S 2– . These CCS QDs are attached to 2-phenylbenzimidazole-5-sulfonic acid (PBSA), an eminent UV-B filter widely used in many commercial sunscreen products to avoid skin erythema and DNA mutagenic photolesions. The photoinduced Förster resonance energy transfer (FRET) is investigated from PBSA to CCS QDs as a function of Cu concentration in CCS QDs using the steady-state photoluminescence and time-resolved photoluminescence measurements. A 2-fold increase in the magnitude of non-radiative energy transfer rate ( K T ( r ) ) is observed as the molar concentration of Cu in CCS QDs increases from 2 to 10 mM. Our findings suggest that in PBSA-CCS QD dyads, the FRET occurrence from PBSA to QDs is dictated by the dynamic mode of photoluminescence (PL) quenching. The bimolecular PL quenching rate constants ( k q ) estimated by Stern–Volmer’s plots for PBSA-CCS QD dyads are of the order of 10 10 M –1 s –1 , which signifies that in the PBSA-CCS QD dyad FRET system, the process of PL quenching is entirely diffusion-controlled.

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“…The ability to form nonstoichiometric phases is because of the variable valence states of copper which has a formula of Cu x S y [6,7]. Various methods have been employed for the synthesis of these nanoparticles like laser induction [8], pulse laser ablation [9], solvothermal [10], phase-controlled synthesis [11], sonochemical [12], or electrobiosynthesis [13]. The major setback of these mentioned methods is the requirement of complicated or expensive equipment and external usage of stabilization agents along with reducing agents.…”

Section: Introductionmentioning

confidence: 99%

Anti-inflammatory and Antimicrobial Potential of Cissus quadrangularis-Assisted Copper Oxide Nanoparticles

Rajeshkumar

Menon

et al. 2021

Journal of Nanomaterials

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Recently, nontoxic origin-mediated synthesis of copper oxide nanoparticles acquires further recognition because of the key role of bioapplications. The plant Cissus quadrangularis is one most prominent herbs used in the treatment of diabetes, asthma, tissue regeneration, etc. In this study, we tested the process of copper oxide nanoparticle synthesis and their role in many functions from Cissus quadrangularis. The synthesis of copper oxide nanoparticles uses plant extract and characterization by X-ray diffraction, thermogravimetric analysis (TGA), Fourier-transform infrared spectroscopy (FT-IR), atomic force microscope (AFM), and scanning electron microscope (SEM). The synthesized nanoparticles were analyzed for their biomedical applications such as antibacterial, antifungal, antioxidant, antidiabetic, and anti-inflammatory activity and antiproteinase action. The results show that the C. quadrangularis plant-mediated nanoparticles may be used in many biomedical applications related to arthritis, diabetes, and the production of various antimicrobial products in the future.

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Colloidal synthesis of copper cadmium sulphide (CuCdS 2 ) nanoparticles and its structural, optical and morphological properties

Cited by 18 publications

References 50 publications

Fabrication of FeO@CuCo ₂ S ₄ multifunctional electrode for ultrahigh‐capacity supercapacitors and efficient oxygen evolution reaction

Fabrication of FeO@CuCo ₂ S ₄ multifunctional electrode for ultrahigh‐capacity supercapacitors and efficient oxygen evolution reaction

Cu-Enhanced Efficient Förster Resonance Energy Transfer in PBSA Sunscreen-Associated Ternary Cu_xCd_1–xS Quantum Dots

Anti-inflammatory and Antimicrobial Potential of Cissus quadrangularis-Assisted Copper Oxide Nanoparticles

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Colloidal synthesis of copper cadmium sulphide (CuCdS 2 ) nanoparticles and its structural, optical and morphological properties

Cited by 18 publications

References 50 publications

Fabrication of FeO@CuCo 2 S 4 multifunctional electrode for ultrahigh‐capacity supercapacitors and efficient oxygen evolution reaction

Fabrication of FeO@CuCo 2 S 4 multifunctional electrode for ultrahigh‐capacity supercapacitors and efficient oxygen evolution reaction

Cu-Enhanced Efficient Förster Resonance Energy Transfer in PBSA Sunscreen-Associated Ternary CuxCd1–xS Quantum Dots

Anti-inflammatory and Antimicrobial Potential of Cissus quadrangularis-Assisted Copper Oxide Nanoparticles

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Fabrication of FeO@CuCo ₂ S ₄ multifunctional electrode for ultrahigh‐capacity supercapacitors and efficient oxygen evolution reaction

Fabrication of FeO@CuCo ₂ S ₄ multifunctional electrode for ultrahigh‐capacity supercapacitors and efficient oxygen evolution reaction

Cu-Enhanced Efficient Förster Resonance Energy Transfer in PBSA Sunscreen-Associated Ternary Cu_xCd_1–xS Quantum Dots