Disulfiram (DSF) is an effective copper (Cu 2+ )-dependent antitumor agent. In the present study, we explored use of transferrin (Tf)-modified DSF/copper sulfide (CuS) nanocomplex (Tf-DSF/CuS) for glioma therapy. Tf was used as glioma targeting motifs, DSF as an anticancer agent, and CuS as a source of Cu 2+ ions and a photothermal agent.

Copper sulphide is a material with low toxicity and high application potential. Colloidal synthesis allows its incorporation into hybrid nanostructures, which not only combine the properties of different materials within one nanocrystal, but also exhibit new features due to the interaction of the building blocks connected on the nanometer scale.

An industrial practice of heap bioleaching of secondary copper sulfide ore that began with only water irrigation without the addition of sulfuric acid was successfully implemented and introduced in this manuscript. ... elevated temperature and low redox potential for secondary copper sulfide. Hydrometallurgy 2011, 108, 130–135. [Google ...

An oxygen reduction potential (ORP) electrode was incorporated with a Pt electrode into a KCl-saturated Ag/AgCl reference electrode and inserted into the leaching solution to measure the total potential for the leaching process. ... Mineralogical studies indicated that the presence of copper sulfide minerals such as chalcopyrite in …

Here, authors synthesize sulfur-containing copper nanowire sponges for selective electrocatalytic alkyne semi-hydrogenation using water as the hydrogen source.

The modeling of the copper sulfide heap leach system developed considers: the modeling of liquid phase transport (via the Darcy flow shown in Equation (63)), ... such as inverse exponential models, potential models or multiple regression (linear and non-linear) models, aimed at explaining the concentration or extraction of copper, …

They showed that addition of barium sulfide to a copper sulfide melt suppressed copper sulfide's electrical conductivity enough to extract a small amount of pure copper from the high-temperature electrochemical cell operating at 1,105 degrees Celsius (2,021 Fahrenheit). ... At the cell operating temperature and at an applied …

Some electrochemical studies have shown that copper sulphide particles possess a highly negative zeta potential at pH values greater than 2, [7], [8]. According to the DLVO theory, [9], [10], this results in colloidal stability and a decrease in the absolute value of the zeta potential is required to promote aggregation and consequent ...

Disulfiram (DSF) is an effective copper (Cu2+)-dependent antitumor agent. In the present study, we explored use of transferrin (Tf)-modified DSF/copper sulfide (CuS) nanocomplex (Tf-DSF/CuS) for glioma therapy. Tf was used as glioma targeting motifs, DSF as an anticancer agent, and CuS as a source of Cu2+ ions and a photothermal agent.

In this paper, the adsorption of a flotation collector, 2-mercaptobenzothiazole(MBT), onto a typical secondary copper sulfide mineral, chalcocite, depending on electrochemical potential was ...

The team led by Prof. Philipp Adelhelm and Dr. Ingo Manke investigated the behavior of copper sulfide, a naturally occurring mineral, as a cathode in a solid-state battery. Lithium was used as anode. A …

Reference to covellite as copper(II) sulfide has been challenged. To support the nominally Cu(I) formal oxidation state for covellite suggested by X-ray photoelectron spectroscopy, the Cu L 2,3 near-edge X-ray absorption fine structure spectrum for unoxidised covellite has been determined in fluorescence yield mode. Interpretation of …

The leaching rates of nickel, copper, iron, and magnesium were 83.48%, 76.24%, 56.43%, and 62.15%, respectively. Cui et al. reported a two-stage roasting–water leaching process for extracting valuable metals from copper–nickel sulfide concentrate. In the first stage, ammonium sulfate was added and roasting was carried out at 500 °C for 2 …

The present study aimed to synthesize, characterize copper sulfide- and eucalyptus oil-based hybrid nanoemulsions and investigate their larvicidal potential against Aedes aegypti by studying ...

Here the authors present a study of the size-dependent, temp.-induced solid-solid phase transition in copper sulfide nanorods from low- to high-chalcocite. The …

Over the past few years, considerable attention has been paid to biomedical applications of copper sulfide nanostructures owing to their enhanced physiochemical and pharmacokinetics characteristics in comparison to gold, silver, and carbon nanomaterials. ... Ultrasonography establishes the Cu 2−x S NPs as potential photoacoustic imaging …

Abstract X-ray diffraction 1. Introduction Copper sulfide is a binary inorganic material which has a general formula Cux S y. It is present in both synthetic materials …

Nickel–copper sulfide ore was prepared by crushing and screening to particles in the size range 0.074–0.147 ... Firstly, the positive increase in zeta potential of nickel–copper sulfide surface, which might be contributed by amino group of l-cysteine adsorbed on the surface of the sulfide by the sulfhydryl group ...

Abstract Over the past few years, considerable attention has been paid to biomedical applications of copper sulfide nanostructures owing to their enhanced physiochemical …

Results of copper sulphide ore beneficiation test. The flotation results of copper sulfide ore are shown in Table 7. At pH 9.2, PAAS and GA were used as combined depressant and PBX as collector to ...

Copper sulfide (CuS) thin film was electrodeposited onto stainless steel (SS 316L) substrate under pulse potential control, from an aqueous acidic solution containing 10 −3 M of CuSO 4.5H 2 O and 10 −2 M of SC(NH 2) 2.The solution pH was maintained at 2.2 ± 0.1 by adding a few microliters of 0.1 M H 2 SO 4 solution. The electrodeposited thin …

Other potential influencing ions. In copper sulfide leaching, some targeted ions could suppress the passivation, decrease reaction activity energy, ameliorate leaching kinetics, eventually improve copper leaching efficiency …

The available potential is independent of ore type. The maximum potential difference available to produce natural currents is estimated at: graphite 0.8, pyrite 0.7, covellite 0.6, chalcocite 0.5, galena 0.3 volt. Self-potentials will be large if the ore body (1) ... at Creta the copper sulfide grains occur as replacements of megaspores, ...

Copper metal sulfide materials have a huge application potential in the field of supercapacitor materials. In this work, to better explore the stoichiometric coefficient affect energy storage mechanism of different copper sulfides, CuS, Cu 7 S 4, Cu 9 S 5, Cu 7.2 S 4, and Cu 2 S with the same morphology were synthesized by hydrothermal method ...

Chalcogenide nanostructured semiconductor, copper sulfide (CuS) was prepared from copper and sulfur powders in stoichiometric ratio by a simple, fast, and convenient one-step mechanochemical synthesis after 40 min of milling in an industrial eccentric vibratory mill. The kinetics of the mechanochemical synthesis and the influence …

The present study deals with extracellular synthesis and characterization of copper sulfide (CuS) nanoparticles using Aeromonas hydrophila, and the biological applications of the synthesized CuS like antibacterial, anti-inflammatory, and antioxidant activity were reported. Further, the toxicological effects of the CuS were evaluated using …

One important potential remobilization mechanism is oxidative release of copper from sulfide phases in sediment when oxic conditions are encountered. This can happen through larger scale resuspension events (e.g., currents, dredging, and other disturbances) or through bioturbation (where the action of filter-feeding and surface …

Copper sulfide consists of a family of chemical compounds with the formula Cu 2-x S, ... Up to a potential of -0.6 V, no clear changes are observed in the XAS spectra when compared to the spectrum of the ex situ CuS@C sample (Figure S7). Upon applying potentials more negative than -0.9 V vs. RHE, the spectra show clear changes, features …

Yet, chalcopyrite is the main copper sulfide mineral, with only minor supergene replacement at the neutralization zone observed in these tailings samples (Dold and Fontboté, 2001). ... However, different sulfide minerals have different potential to generate acidity. Chalcopyrite generates only 1 mol of protons per mole of sulfur, …

Recent Advances in Small Copper Sulfide Nanoparticles for Molecular Imaging and Tumor Therapy. Molecular Pharmaceutics 2019, 16 (8), ... Synthesis of ultrastable and multifunctional gold nanoclusters with enhanced fluorescence and potential anticancer drug delivery application. Journal of Colloid and Interface Science 2015, 455, 6-15.