The role of cupric ions in the oxidative dissolution process of marmatite: A dependence on Cu2+ concentration
-
Add time:08/16/2019 Source:sciencedirect.com
Cupric ions (Cu2+) play an important role in the oxidative dissolution process of marmatite in an acidic environment. In this work, dissolution experiments and numerous analytical techniques were utilized to investigate the role of Cu2+ in the oxidative dissolution process of marmatite in sulfuric acid. The dissolution experiments showed that the role of Cu2+ is significantly dependent on its concentration. A low Cu2+ concentration (0.25–750 mg/L) can significantly accelerate marmatite dissolution, and a relatively high Cu2+ concentration (above 1000 mg/L) can hinder marmatite dissolution. Element analysis, synchrotron radiation-based X-ray diffraction (SR-XRD) and Raman spectra of the leaching residues proved that no copper containing mineralogical phase was produced by the reactions between Cu2+ and marmatite. The X-ray photoelectron spectroscopy (XPS) analysis indicated that Cu2+ was first adsorbed on the marmatite surface and then produced Cu-S surface species. An electrochemical measurement further indicated that the adsorption of Cu2+ can remarkably enhance the electrochemical reactivity of the marmatite surface, thus catalyzing the oxidative dissolution process. However, a high percentage of Cu2+ adsorption on the marmatite surface can produce a passivation layer when the Cu2+ concentration is high in the solution, which decreases the electrochemical reactivity, thus resulting in the hinderance of the oxidative dissolution process of marmatite.
We also recommend Trading Suppliers and Manufacturers of Cupric oxide (cas 1317-38-0). Pls Click Website Link as below: cas 1317-38-0 suppliers
Prev:Evaluation of hybrid anion exchanger containing Cupric oxide (cas 1317-38-0) for As(III) removal from water
Next:Stimulated low frequency Raman scattering in Cupric oxide (cas 1317-38-0) nanoparticles water suspension) - 【Back】【Close 】【Print】【Add to favorite 】
- Related Information
- Electrochemical behaviour and voltammetric determination of mercury (II) ion in Cupric oxide (cas 1317-38-0)/poly vinyl alcohol nanocomposite modified glassy carbon electrode08/23/2019
- Comparison of experimental and calculated thermophysical properties of alumina/Cupric oxide (cas 1317-38-0) hybrid nanofluids08/22/2019
- A cleaner route for nanocolouration of wool fabric via green assembling of Cupric oxide (cas 1317-38-0) nanoparticles along with antibacterial and UV protection properties08/21/2019
- Cupric oxide (cas 1317-38-0)-based p-type Transparent Conductors☆08/20/2019
- Biosynthesis of nano Cupric oxide (cas 1317-38-0) on cotton using Seidlitzia rosmarinus ashes utilizing bio, photo, acid sensing and leaching properties08/19/2019
- Fabrication of a semi-transparent flexible humidity sensor using kinetically sprayed Cupric oxide (cas 1317-38-0) film08/18/2019
- Stimulated low frequency Raman scattering in Cupric oxide (cas 1317-38-0) nanoparticles water suspension08/17/2019
- Evaluation of hybrid anion exchanger containing Cupric oxide (cas 1317-38-0) for As(III) removal from water08/15/2019
-
Health and Chemical more >