Synthesis and photocatalytic performance of copper sulfide by a simple solvothermal method

Zhou, Shuang-long; Gong, Lige; Zhao, Xinyu; Liang, Qiu-lan; Zhang, Wen-jia; Wang, Liying; Yu, Kai; Zhou, Baibin

doi:10.1016/j.cplett.2020.138034

Cited by 24 publications

(10 citation statements)

References 45 publications

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“…With the ternary dyes, degradation efficiencies after four cycles were 54%, 65%, and 82% for CuS 1 , CuS 2, and CuS 3 respectively for CV while MB degradation efficiencies are 64%, 62%, and 88% and RhB degradation efficiencies are 43% for CuS 1 , 65% for CuS 2 and 78% for CuS 3 . The reduction in degradation efficiency might be due to coverage of the active catalyst sites by the degradation products during reaction and reduction of the catalyst during the filtration process [ 68 ]. In addition, the XRD patterns presented in Figure 1 also indicate that the catalyst was not photo corroded as no shift was observed in the diffraction patterns after usage.…”

Section: Resultsmentioning

confidence: 99%

“…The reduction in degradation efficiency might be due to coverage of the active catalyst sites by the degradation products during reaction and reduction of the catalyst during the filtration process [68]. In addition, the XRD patterns presented in Figure 1 also indicate that the catalyst was not photo corroded as no shift was observed in the diffraction patterns after usage.…”

Section: Photostability Studies Of Cus Nanoparticlesmentioning

confidence: 99%

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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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Section: Resultsmentioning

confidence: 99%

Section: Photostability Studies Of Cus Nanoparticlesmentioning

confidence: 99%

Enhanced Photocatalytic Degradation of Ternary Dyes by Copper Sulfide Nanoparticles

Ajibade

Oluwalana

2021

Nanomaterials

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“…Sw 0.5 h 180 °C and Sr 0.5 h 180 °C samples were chosen as photocatalysts for this experiment. A total of 15 mg of synthesized copper sulfide were mixed in a vessel with 100 mL of MB solution and 4 mL of H 2 O 2 according to parameters optimized in a previous study [ 29 ]. In order to achieve an adsorption–desorption equilibrium, the catalyst was magnetically stirred in a dye solution for 10 min before starting the irradiation.…”

Section: Methodsmentioning

confidence: 99%

“…For these reasons, copper sulfide could potentially be used as a material for the production of light-emitting diodes [ 16 ], researchable batteries [ 17 , 18 , 19 ], solar cells [ 4 , 7 , 20 , 21 , 22 ], photoelectronic devices [ 23 ], supercapacitors [ 2 , 24 , 25 ], biosensors [ 26 ], DNA detectors [ 27 ] etc. Moreover, copper sulfides showed outstanding results in various photodegrading dyes under UV or visible light irradiation [ 28 , 29 ].…”

Section: Introductionmentioning

confidence: 99%

“…A considerable amount of literature has been published on approaches to fabricating copper sulfides. According to these studies, chemical vapour deposition [ 30 ], chemical bath deposition [ 31 ], simple chemical precipitation [ 8 , 21 , 32 ], high temperature thermolysis [ 33 ], electrochemical synthesis [ 34 ], sonochemistry [ 16 ], mechanochemistry [ 12 , 35 , 36 ], sonication [ 37 ], solvothermal method [ 29 , 38 ] have been developed over the past few decades. Among them, hydrothermal synthesis is a widely employed technique due to process advantages, such as low production cost, easy processing, and eco-friendliness [ 39 , 40 , 41 , 42 ].…”

Section: Introductionmentioning

confidence: 99%

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Aqueous-Based Synthesis of Photocatalytic Copper Sulfide Using Sulfur Waste as Sulfurizing Agent

2022

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Most of the copper sulfide synthetic approaches developed until now are still facing issues in their procedure, such as long synthesis duration, high energetic consumption, and high implementation costs. This publication reports a facile and sustainable approach for synthesizing copper sulfides on a large scale. In particular, an industrial by-product of sulfur waste was used as a sulfurizing agent for copper sulfide synthesis in a water medium. The reaction was performed in the hydrothermal environment by following a novel proposed mechanism of copper sulfide formation. The investigation of morphological and optical properties revealed that the target products obtained by using waste possess the resembling properties as the ones synthesized from the most conventional sulfurizing agent. Since the determined band gap of synthesis products varied from 1.72 to 1.81 eV, the photocatalytic properties, triggered under visible light irradiation, were also investigated by degrading the methylene blue as a model pollutant. Importantly, the degradation efficiency of the copper sulfide synthesized from sulfur waste was equivalent to a sample obtained from a reference sulfurizing agent since the value for both samples was 96% in 180 min. This very simple synthetic approach opens up a new way for large-scale sustainable production of visible-light-driven photocatalysts for water purification from organic pollutants.

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CuS NPs/Zeolite A/ZIF-8 Dual-Action Composite for Removal of Methylene Blue from Aqueous Solutions

et al. 2022

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Synthesis and photocatalytic performance of copper sulfide by a simple solvothermal method

Cited by 24 publications

References 45 publications

Enhanced Photocatalytic Degradation of Ternary Dyes by Copper Sulfide Nanoparticles

Enhanced Photocatalytic Degradation of Ternary Dyes by Copper Sulfide Nanoparticles

Aqueous-Based Synthesis of Photocatalytic Copper Sulfide Using Sulfur Waste as Sulfurizing Agent

CuS NPs/Zeolite A/ZIF-8 Dual-Action Composite for Removal of Methylene Blue from Aqueous Solutions

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