Formation, evolution and characteristics of copper sulfide nanoparticles in the reactions of aqueous cupric and sulfide ions | Научно-инновационный портал СФУ

Formation, evolution and characteristics of copper sulfide nanoparticles in the reactions of aqueous cupric and sulfide ions

Тип публикации: статья из журнала

Год издания: 2020

Идентификатор DOI: 10.1016/j.matchemphys.2020.123600

Ключевые слова: copper sulfide nanoparticles, polysulfide, x-ray photoelectron spectroscopy, x-ray absorption spectroscopy, dft plus u

Аннотация: Colloidal copper sulfides produced in reactions of aqueous copper and sulfide ions are important for many materials applications, environment and mineral processing. Here, CuxS nanoparticles formed and aged at varying copper sulfate to sodium sulfide ratios were studied using in situ UV-vis-NIR spectroscopy, dynamic light scattering, X-ray absorption spectroscopy, ex situ TEM, X-ray photoelectron spectroscopy and Raman scattering, and DFT + U calculations. It was established that the ratio of aqueous Cu2+ to S2- ions of 1:2 is critical for the reaction, which yields disordered covellite-like 4-6 nm Cu0.7S nanoparticles comprised polysulfide species at this and higher sulfide concentrations; upon aging, the particles release sulfur and transform to chalcocite-like structure (Cu2-xS, x

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Издание

Журнал: MATERIALS CHEMISTRY AND PHYSICS

Выпуск журнала: Vol. 255

Номера страниц: 123600

ISSN журнала: 02540584

Место издания: LAUSANNE

Издатель: ELSEVIER SCIENCE SA

Авторы

  • Mikhlin Yuri (Russian Acad Sci, Inst Chem & Chem Technol, Krasnoyarsk Sci Ctr, Siberian Branch, Akad 50-24, Krasnoyarsk 660036, Russia)
  • Nasluzov Vladimir (Russian Acad Sci, Inst Chem & Chem Technol, Krasnoyarsk Sci Ctr, Siberian Branch, Akad 50-24, Krasnoyarsk 660036, Russia)
  • Ivaneeva Anastasia (Russian Acad Sci, Inst Chem & Chem Technol, Krasnoyarsk Sci Ctr, Siberian Branch, Akad 50-24, Krasnoyarsk 660036, Russia)
  • Vorobyev Sergey (Russian Acad Sci, Inst Chem & Chem Technol, Krasnoyarsk Sci Ctr, Siberian Branch, Akad 50-24, Krasnoyarsk 660036, Russia)
  • Likhatski Maxim (Russian Acad Sci, Inst Chem & Chem Technol, Krasnoyarsk Sci Ctr, Siberian Branch, Akad 50-24, Krasnoyarsk 660036, Russia)
  • Romanchenko Alexander (Russian Acad Sci, Inst Chem & Chem Technol, Krasnoyarsk Sci Ctr, Siberian Branch, Akad 50-24, Krasnoyarsk 660036, Russia)
  • Krylov Alexander (Russian Acad Sci, Kirensky Inst Phys, Krasnoyarsk Sci Ctr, Siberian Branch, Akad 50-38, Krasnoyarsk 660036, Russia)
  • Zharkov Sergey (Russian Acad Sci, Kirensky Inst Phys, Krasnoyarsk Sci Ctr, Siberian Branch, Akad 50-38, Krasnoyarsk 660036, Russia; Siberian Fed Univ, Svobodny Pr 79, Krasnoyarsk 660041, Russia)
  • Meira Debora Motta (European Synchrotron Radiat Facil, 6 Rue Jules Horowitz, F-38042 Grenoble, France; Argonne Natl Lab, Adv Photon Source, CLS APS Sect 20,9700 S Cass Ave, Lemont, IL 60439 USA; Canadian Light Source Inc, 44 Innovat Blvd, Saskatoon, SK S7N 2V3, Canada)

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