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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.

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
RESUMEN

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.

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Sigma-Aldrich
Rhodamine B, ≥95% (HPLC)
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Hydrogen peroxide solution, 34.5-36.5%
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Rhodamine B, for fluorescence
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Sodium nitrate, BioUltra, ≥99.0% (T)
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Hydrogen peroxide solution, 30 % (w/w) in H2O, contains stabilizer
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Sodium nitrate, ≥99.0%, suitable for plant cell culture
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Sodium nitrate, BioXtra, ≥99.0%
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Chloroacetic acid, ACS reagent, ≥99.0%
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Hydrogen peroxide solution, contains potassium stannate as inhibitor, 30-32 wt. % in water, semiconductor grade, 99.999% trace metals basis
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Sodium nitrate-14N, 99.95 atom % 14N
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Sodium nitrate, 99.995% trace metals basis
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Chloroacetic acid, 99%
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Liquified Phenol, ≥89.0%
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Sodium nitrate, ACS reagent, ≥99.0%
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Hydrogen peroxide solution, contains ~200 ppm acetanilide as stabilizer, 3 wt. % in H2O
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Hydrogen peroxide solution, 50 wt. % in H2O, stabilized
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Hydrogen peroxide solution, contains inhibitor, 35 wt. % in H2O
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Sodium nitrate, anhydrous, free-flowing, Redi-Dri, ReagentPlus®, ≥99%
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Sodium nitrate, ReagentPlus®, ≥99.0%
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Hydrogen peroxide solution, purum p.a., ≥35% (RT)
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Hydrogen peroxide solution, contains inhibitor, 30 wt. % in H2O, ACS reagent
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Hydrogen peroxide solution, contains inhibitor, 30 wt. % in H2O, meets USP testing specifications
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Phenol, for molecular biology
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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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Dimethyl sulfoxide, ≥99.5% (GC), suitable for plant cell culture
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Dimethyl sulfoxide, PCR Reagent
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Dimethyl sulfoxide, for molecular biology
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Dimethyl sulfoxide, Hybri-Max, sterile-filtered, BioReagent, suitable for hybridoma, ≥99.7%
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Dimethyl sulfoxide, meets EP testing specifications, meets USP testing specifications
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Phenol solution, Saturated with 0.1 M citrate buffer, pH 4.3 ± 0.2, BioReagent, for molecular biology