Publikationsdatum:
2019
Beschreibung:
〈p〉Publication date: 1 December 2019〈/p〉
〈p〉〈b〉Source:〈/b〉 Applied Surface Science, Volume 496〈/p〉
〈p〉Author(s): Hao Lai, Jiushuai Deng, Shuming Wen〈/p〉
〈div xml:lang="en"〉
〈h5〉Abstract〈/h5〉
〈div〉〈p〉Although dodecylamine (DDA) is a conventional collector for the flotation of smithsonite, the interaction mechanism between DDA and smithsonite is still unclear. In this study, time-of-flight secondary ion mass spectrometry (ToF-SIMS) and principal component analysis (PCA) were used to investigate the surface products of smithsonite with DDA adsorption before and after sulfidization. The spectra analysis showed that the organic peaks C〈sub〉x〈/sub〉H〈sub〉y〈/sub〉〈sup〉+〈/sup〉, CN〈sup〉−〈/sup〉, and CNO〈sup〉−〈/sup〉 dominate the spectra of the smithsonite samples, eclipsing the inorganic peaks and DDA-related peaks. PCA analysis effectively identified the spectral differences between the different samples, indicating that DDA hardly interacted with the hydrated smithsonite surface; the zinc‑sulfur complex on the sulfidized smithsonite surface existed in the form of Zn〈sub〉a〈/sub〉S〈sub〉b〈/sub〉O〈sub〉c〈/sub〉H〈sub〉d〈/sub〉; DDA was chemisorbed on the sulfidized smithsonite surface and may occur in the form of N-S-Zn, N-Zn-S, or Zn-N-S bonds.〈/p〉〈/div〉
〈/div〉
〈div xml:lang="en"〉
〈h5〉Graphical abstract〈/h5〉
〈div〉〈p〉〈figure〉〈img src="https://ars.els-cdn.com/content/image/1-s2.0-S016943321932495X-ga1.jpg" width="500" alt="Unlabelled Image" title="Unlabelled Image"〉〈/figure〉〈/p〉〈/div〉
〈/div〉
Print ISSN:
0169-4332
Digitale ISSN:
1873-5584
Thema:
Physik
