Ligand-based stoichiometric tuning in copper sulfide nanostructures and their catalytic ability

Jain, Mamta; Babar, Dipak Gorakh; Garje, Shivram S.

doi:10.1007/s13204-018-0915-5

Cited by 15 publications

(11 citation statements)

References 77 publications

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“…Recently, our group reported the use of thiourea Cu(II) complexes, N-morpholine-N-benzoylthioureatocopper(II), and N-pyrrolidine-N-benzoylthioureatocopper(II) complexes as single-source precursors for the preparation of copper sulphide NPs with various morphologies [8,9], and our results indicate that the formation of the roxbyite phase (Cu 1.75 S) was solvent and temperature dependent [9]. Studies have also reported the use of Cu(II) complexes for the photodegradation of organic dyes in aqueous solution [28,29].…”

Section: Introductionsupporting

confidence: 59%

Copper (II) Heterocyclic Thiosemicarbazone Complexes as Single-Source Precursors for the Preparation of Cu9S5 Nanoparticles: Application in Photocatalytic Degradation of Methylene Blue

et al. 2022

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In this study, two copper(II) complexes, [Cu(C6H8N3S2)2]Cl2 (1) and [Cu(C7H10N3S2)2]Cl2·H2O (2), were synthesized from 2-(thiophen-2-ylmethylene)hydrazine-1-carbothioamide (L1H) and 2-(1-(thiophen-2-yl)ethylidene)hydrazine-1-carbothioamide (L2H) respectively and characterized using various spectroscopic techniques and elemental analyses. The as-prepared complexes were used as single-source precursors for the synthesis of oleylamine-capped (OLA@CuxSy), hexadecylamine-capped (HDA@CuxSy), and dodecylamine-capped (DDA@CuxSy) copper sulphide nanoparticles (NPs) via the thermolysis method at 190 °C and 230 °C and then characterized using powder X-ray diffraction (p-XRD), UV-visible spectroscopy, transmission electron microscopy (TEM), and scanning electron microscopy (SEM). The p-XRD diffraction patterns confirmed the formation of crystalline rhombohedral digenite Cu9S5 with the space group R-3m. The TEM images showed the formation of nanoparticles of various shapes including hexagonal, rectangular, cubic, truncated-triangular, and irregularly shaped Cu9S5 nanomaterials. The SEM results showed aggregates and clusters as well as the presence of pores on the surfaces of nanoparticles synthesized at 190 °C. The UV-visible spectroscopy revealed a general blue shift observed in the absorption band edge of the copper sulphide NPs, as compared to bulk CuxSy, with energy band gaps ranging from 2.52 to 3.00 eV. Energy-dispersive X-ray spectroscopy (EDX) confirmed the elemental composition of the Cu9S5 nanoparticles. The nanoparticles obtained at 190 °C and 230 °C were used as catalysts for the photocatalytic degradation of methylene blue (MB) under UV irradiation. Degradation rates varying from 47.1% to 80.0% were obtained after 90 min of exposure time using only 10 mg of the catalyst, indicating that Cu9S5 nanoparticles have potential in the degradation of organic pollutants (dyes).

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Section: Introductionsupporting

confidence: 59%

Copper (II) Heterocyclic Thiosemicarbazone Complexes as Single-Source Precursors for the Preparation of Cu9S5 Nanoparticles: Application in Photocatalytic Degradation of Methylene Blue

et al. 2022

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“…The peaks corresponding to the (220) plane are due to cubic Cu 2 S, whereas reflections corresponding to the (102), (103), (006), (108), and (116) planes are due to hexagonal CuS. 24 There is no diffraction peak corresponding to GO, which could be due to its low diffraction intensity. In order to understand it better, the XRD spectrum of CuS-rGO (50:50) is also given in the Supporting Information ( Figure S1 ).…”

Section: Results and Discussionmentioning

confidence: 99%

“…053-522). The peaks corresponding to the (220) plane are due to cubic Cu 2 S, whereas reflections corresponding to the (102), (103), (006), (108), and (116) planes are due to hexagonal CuS . There is no diffraction peak corresponding to GO, which could be due to its low diffraction intensity.…”

Section: Results and Discussionmentioning

confidence: 99%

Nitrogenated Graphene Oxide-Decorated Metal Sulfides for Better Antifouling and Dye Removal

et al. 2022

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Nitrogenated graphene oxide-decorated copper sulfide nanocomposites (Cu x S-NrGO, where x = 1 and 2) are designed to be incorporated in polysulfone (PSF) membranes for effective fouling resistance of PSF membranes and their dye removal capacity. The developed membranes possess more hydrophilicity and an enhancement in pure water flux (PWF). Also, the highest bovine serum albumin (BSA) rejection of 89% was observed when compared to membranes with pristine PSF (5 L/m 2 h PWF and 88% BSA rejection) and CuS-incorporated PSF membranes (14 L/m 2 h PWF and 83% BSA rejection) because of N doping and enhanced permeability. It is also found that the Cu x S-NrGO-incorporated PSF membranes exhibited a significantly higher fouling resistance, a larger permeate flux recovery ratio (FRR) of nearly 82%, and a congo red dye rejection of 93%. Cu x S-NrGO nanoparticles thus demonstrate the potential efficacy of enhancing the hydrophilicity, leading to a better flux, dye removal capacity, and antifouling capacity with a very high FRR value of 82% because of a strong interaction between the N-active sites of the NrGO, Cu x S, and polysulfone matrix, and negligible leaching of nanoparticles is observed.

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“…Nanocrystals of Cu 2 S, an important p-type semiconductor, have been investigated because of their substantial advantages, which include strong absorption, high photostability, and low toxicity. [62][63][64][65][66][67] They have strong potential in a wide range of applications, including solar cells, photocatalysts, thermoelectric materials, and highcapacity anode materials for lithium secondary batteries. [68][69][70][71][72] Cu@Cu 2 S hybrid nanostructures can be effectively synthesized by exposing preformed Cu nanocrystals to sulfur compounds in various oxidation states to transform them into sulfides.…”

Section: Resultsmentioning

confidence: 99%

High-yield synthesis and hybridizations of Cu microplates for catalytic applications

Zulkifli

Kim

2022

CrystEngComm

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Ligand-based stoichiometric tuning in copper sulfide nanostructures and their catalytic ability

Cited by 15 publications

References 77 publications

Copper (II) Heterocyclic Thiosemicarbazone Complexes as Single-Source Precursors for the Preparation of Cu9S5 Nanoparticles: Application in Photocatalytic Degradation of Methylene Blue

Copper (II) Heterocyclic Thiosemicarbazone Complexes as Single-Source Precursors for the Preparation of Cu9S5 Nanoparticles: Application in Photocatalytic Degradation of Methylene Blue

Nitrogenated Graphene Oxide-Decorated Metal Sulfides for Better Antifouling and Dye Removal

High-yield synthesis and hybridizations of Cu microplates for catalytic applications

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