Synthesis of CuS and Cu1.1Fe1.1S2 crystals and their electrochemical properties

Pei, Lizhai; Wang, J.F.; Tao, Xiucheng; Wang, S.B.; Dong, Yong Ping; Fan, Chuangang; Zhang, Qian‐Feng

doi:10.1016/j.matchar.2011.01.001

Cited by 78 publications

(26 citation statements)

References 28 publications

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“…The appearance of two bands at 1195 and 1070 cm -1 suggests that the CuS surface has been truly modified by TEA with the additional advantage of having extra polar groups, such as -OH, coming from triethanolamine (Gu and Wu 2007). Finally, the band at 615 cm -1 is attributed to the Cu-S stretching vibration (Pei et al 2011). Therefore, the cationic MB molecules preferentially cover the CuS surface which facilitates the electron transfer mechanism in dye degradation process.…”

Section: Ft-ir Study and Lewis Basicity Test To Detect Hydroxyl Ions mentioning

confidence: 99%

Synthesis of CuS nanoparticles by a wet chemical route and their photocatalytic activity

et al. 2015

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CuS nanoparticles (NPs) of few nanometers in size were prepared by a wet chemical method. The structural, compositional, and optical properties of the NPs were characterized by X-ray diffraction (XRD), scanning electron microscopy, transmission electron microscopy, energy-dispersive X-ray spectroscopy, micro Raman and Fourier transform infrared spectroscopy, N 2 adsorption-desorption isotherms, and UV-Vis diffuse reflectance spectroscopy. The XRD pattern proved the presence of hexagonal phase of CuS particles which was further supported by Raman spectrum. The estimated band gap energy of 2.05 eV for the slightly sulfur-rich CuS NPs is relatively larger than that of bulk CuS (1.85 eV), indicating the small size effect. As-prepared NPs showed excellent photocatalytic activity for the degradation of methylene blue (MB) under visible light. The surface-bound OH -ions at the CuS nanostructures help adsorb MB molecules facilitating their degradation process under visible light illumination. The studies presented in this paper suggest that the synthesized CuS NPs are promising, efficient, stable, and visible-light-sensitive photocatalyst for the remediation of wastewater polluted by chemically stable azo dyes such as MB.

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Section: Ft-ir Study and Lewis Basicity Test To Detect Hydroxyl Ions mentioning

confidence: 99%

Synthesis of CuS nanoparticles by a wet chemical route and their photocatalytic activity

et al. 2015

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“…The broad absorption peak around 3450 cm −1 corresponds to the stretching mode of the hydroxyl ions and 1630 cm −1 corresponds to the bending modes of H-O-H moieties of absorbed water, which indicates that the existing water molecules are absorbed by sulfide products. The presence of vibrational peak around 613 cm −1 indicates the presence of Cu-S stretching modes [39].…”

Section: Optical Property Of Cus Nanoplatesmentioning

confidence: 99%

Growth of CuS Nanostructures by Hydrothermal Route and Its Optical Properties

Saranya

Santhosh

Ramachandran

et al. 2014

Journal of Nanotechnology

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CuS nanostructures have been successfully synthesized by hydrothermal route using copper nitrate and sodium thiosulphate as copper and sulfur precursors. Investigations were done to probe the effect of cationic surfactant, namely, Cetyltrimethylammonium bromide (CTAB) on the morphology of the products. A further study has been done to know the effect of reaction time on the morphology of CuS nanostructures. The FE-SEM results showed that the CuS products synthesized in CTAB were hexagonal plates and the samples prepared without CTAB were nanoplate like morphology of sizes about 40–80 nm. Presence of nanoplate-like structure of size about 40–80 nm was observed for the sample without CTAB. The synthesized CuS nanostructures were characterized by X-ray diffraction (XRD), FE-SEM, DRS-UV-Vis spectroscopy, and FT-IR spectroscopy. A possible growth mechanism has been elucidated for the growth of CuS nanostructures.

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“…A vibration peak at 597 cm ¡1 signifies the presence of Cu-S bond [18,19]. For CTAB capped CdS nanoparticle, the peak at 3386.93 cm ¡1 is attributed to O-H stretching vibration of water molecules [20]. The CH 2 symmetric (n sym (-CH 2 )) and asymmetric stretching (n asym (-CH 2 )) vibrations of CTAB bound on CdS nanoparticles are observed at 2917 and 2848 cm ¡1 respectively [21].…”

Section: X-ray Diffraction Analysismentioning

confidence: 99%

Influence of CTAB surfactant on structural and optical properties of CuS and CdS nanoparticles by hydrothermal route

Selvi¹,

Linet²,

Sagadevan

2018

Journal of Experimental Nanoscience

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Metal sulphide CuS and CdS nanoparticles capped with Cetyltrimethylammonium bromide (CTAB) were synthesized by hydrothermal method. Structural, morphological, chemical composition, optical and luminescent properties were evaluated by different analytical techniques. X-ray diffraction (XRD) analysis of the CTAB capped metal sulfide nanoparticles reveals the formation of hexagonal structure. High-resolution transmission electron microscopy (HRTEM) images show that the morphology of the capped copper sulphide samples consists of hexagonal structure and capped cadmium has spherical shape and also confirms the crystalline nature of the particles with distinct lattice fringes. In FTIR spectroscopy, the composition of the CTAB capped CuS and CdS nanoparticles have been confirmed. The analysis of photoluminescence (PL) and optical transition show a red shift due to the reduction of band gap energy and it is attributed to the low defects and high crystallinity. The optical studies indicate that CuS and CdS nanoparticles with CTAB can be suitable for optoelectronic devices and photovoltaic applications.

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Synthesis of CuS and Cu1.1Fe1.1S2 crystals and their electrochemical properties

Cited by 78 publications

References 28 publications

Synthesis of CuS nanoparticles by a wet chemical route and their photocatalytic activity

Synthesis of CuS nanoparticles by a wet chemical route and their photocatalytic activity

Growth of CuS Nanostructures by Hydrothermal Route and Its Optical Properties

Influence of CTAB surfactant on structural and optical properties of CuS and CdS nanoparticles by hydrothermal route

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