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Facile room-temperature synthesis of carboxylated graphene oxide-copper sulfide nanocomposite with high photodegradation and disinfection activities under solar light irradiation.

Scientific reports (2015-11-11)
Shuyan Yu, Jincheng Liu, Wenyu Zhu, Zhong-Ting Hu, Teik-Thye Lim, Xiaoli Yan
ABSTRACT

Carboxylic acid functionalized graphene oxide-copper (II) sulfide nanoparticle composite (GO-COOH-CuS) was prepared from carboxylated graphene oxide and copper precursor in dimethyl sulfoxide (DMSO) by a facile synthesis process at room temperature. The high-effective combination, the interaction between GO-COOH sheets and CuS nanoparticles, and the enhanced visible light absorption were confirmed by transmission electron microscopy (TEM), field emission scanning electron microscopy (FESEM), X-ray powder diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), thermo gravimetric analysis (TGA), X-ray photoelectron spectroscopy (XPS), UV-vis diffuse reflectance spectra (DRS) and Photoluminescence (PL) spectra. The as-synthesized GO-COOH-CuS nanocomposite exhibited excellent photocatalytic degradation performance of phenol and rhodamine B, high antibacterial activity toward E. coli and B. subtilis, and good recovery and reusability. The influence of CuS content, the synergistic reaction between CuS and GO-COOH, and the charge-transfer mechanism were systematically investigated. The facile and low-energy synthesis process combined with the excellent degradation and antibacterial performance signify that the GO-COOH-CuS has a great potential for water treatment application.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
Dimethyl sulfoxide, Hybri-Max, sterile-filtered, BioReagent, suitable for hybridoma, ≥99.7%
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Hydrochloric acid, ACS reagent, 37%
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Hydrogen peroxide solution, 30 % (w/w) in H2O, contains stabilizer
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Dimethyl sulfoxide, ACS reagent, ≥99.9%
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Sulfuric acid, ACS reagent, 95.0-98.0%
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Dimethyl sulfoxide, sterile-filtered, BioPerformance Certified, meets EP, USP testing specifications, suitable for hybridoma
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Hydrochloric acid, ACS reagent, 37%
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Hydrogen peroxide solution, contains inhibitor, 30 wt. % in H2O, ACS reagent
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Sulfuric acid, 99.999%
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Dimethyl sulfoxide, ReagentPlus®, ≥99.5%
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Dimethyl sulfoxide, ≥99.5% (GC), suitable for plant cell culture
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Hydrogen chloride solution, 4.0 M in dioxane
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Hydrochloric acid solution, 1.0 N, BioReagent, suitable for cell culture
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Hydrochloric acid, 36.5-38.0%, BioReagent, for molecular biology
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Hydrogen peroxide solution, 50 wt. % in H2O, stabilized
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Phenol solution, Equilibrated with 10 mM Tris HCl, pH 8.0, 1 mM EDTA, BioReagent, for molecular biology
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Rhodamine B, for fluorescence
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Rhodamine B, ≥95% (HPLC)
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Phenol, puriss. p.a., ACS reagent, reag. Ph. Eur., 99.0-100.5%
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Liquified Phenol, ≥89.0%
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Hydrogen peroxide solution, contains ~200 ppm acetanilide as stabilizer, 3 wt. % in H2O
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