Colloidal and immobilized nanoparticles of lead xanthates

Тип публикации: статья из журнала

Год издания: 2019

Идентификатор DOI: 10.1021/acsomega.9b00841

Аннотация: Although nanoparticles of heavy metal xanthates and their hydrosols can play important roles in froth flotation, environmental issues, analytics, and manufacturing of metal sulfide nanocomposites, they have received little attention. We studied colloidal solutions and immobilized particles prepared via interaction of aqueous lead nitrate with alkyl xanthates applying UV−vis absorption spectroscopy, dynamic light scattering, zeta potential measurement, thermogravimetry analysis, Fourier transform infrared spectroscopy, Raman scattering, X-ray photoelectron spectroscopy, atomic force microscopy, and transmission electron microscopy. The hydrodynamic diameter of colloidal particles of Pb(SSCOR)2 decreased from 500 to 50 nm with an increase in the alkyl radical length and the initial xanthate to lead ratio (X/Pb); the zeta potential magnitude varied similarly, although it remained negative. The effect of pH in the range of 4.5−11 was minor, but the colloids produced using excess of Pb2+ in alkaline media were close to PbX and decomposed much easier than PbX2. The uptake of lead xanthates on supports was generally low because of negative charges of the colloids; however, 50−100 nm thick PbX2 films were deposited on PbS and SiO2 from the media of X/Pb

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Издание

Журнал: ACS Omega

Выпуск журнала: Vol. 4, Is. 7

Номера страниц: 11472-11480

ISSN журнала: 24701343

Издатель: American Chemical Society

Авторы

  • Vorobyev Sergey A. (Russian Acad Sci, Inst Chem & Chem Technol, Siberian Branch, Fed Res Ctr,Krasnoyarsk Sci Ctr, Krasnoyarsk 660036, Russia)
  • Saikova Svetlana (Siberian Fed Univ, Svobodny Pr 79, Krasnoyarsk 660041, Russia)
  • Novikova Svetlana A. (Russian Acad Sci, Inst Chem & Chem Technol, Siberian Branch, Fed Res Ctr,Krasnoyarsk Sci Ctr, Krasnoyarsk 660036, Russia)
  • Fetisova Olga Yu (Russian Acad Sci, Inst Chem & Chem Technol, Siberian Branch, Fed Res Ctr,Krasnoyarsk Sci Ctr, Krasnoyarsk 660036, Russia)
  • Zharkov Sergey M. (Siberian Fed Univ, Svobodny Pr 79, Krasnoyarsk 660041, Russia; Russian Acad Sci, Siberian Branch, Kirensky Inst Phys, Fed Res Ctr,Krasnoyarsk Sci Ctr, Akademgorodok 50-38, Krasnoyarsk 660036, RussiaArticle)
  • Krylov Alexander S. (Russian Acad Sci, Siberian Branch, Kirensky Inst Phys, Fed Res Ctr,Krasnoyarsk Sci Ctr, Akademgorodok 50-38, Krasnoyarsk 660036, RussiaArticle)
  • Likhatski Maxim N. (Russian Acad Sci, Inst Chem & Chem Technol, Siberian Branch, Fed Res Ctr,Krasnoyarsk Sci Ctr, Krasnoyarsk 660036, Russia)
  • Mikhlin Yuri L. (Russian Acad Sci, Inst Chem & Chem Technol, Siberian Branch, Fed Res Ctr,Krasnoyarsk Sci Ctr, Krasnoyarsk 660036, Russia)

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