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Uncovering the roles of C-S-C group in improving the flotation performance of benzohydroxamic acid toward galena.
- Source :
-
Applied Surface Science . Jan2023, Vol. 608, pN.PAG-N.PAG. 1p. - Publication Year :
- 2023
-
Abstract
- [Display omitted] • BTHA was first introduced as a collector for the flotation of galena. • The incorporation of C-S-C group improved the molecular properties of BHA. • BTHA exhibited better collecting ability toward galena in comparison with BHA. • BTHA chemically adsorbed on the galena surface through its -C(=O)-NHOH and C-S-C groups. In this contribution, the roles of the thioether (C-S-C) group in improving the flotation performance of benzohydroxamic acid (BHA) toward galena were studied by density functional theory (DFT) calculation, adsorption experiments, zeta potential, surface energy measurements and X-ray photoelectron spectroscopy (XPS). It was found that the incorporation of C-S-C group was observed to increase the functional groups, chelating ability and hydrophobicity of BHA, thus enhance its flotation performance to galena. The adsorption mechanism analyses demonstrated that 2-(benzythio)-eacetohydroxamic acid (BTHA) molecule anchored on the galena surface mainly by the reactions of the two O atoms originated from -C(=O)-NH-OH group and lead species with the formation of a five-membered rings. Additionally, the C-S-C group in BTHA molecule could donate its electrons to lead species on galena surface, which was also helpful to the adsorption of BTHA on galena surface. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 01694332
- Volume :
- 608
- Database :
- Academic Search Index
- Journal :
- Applied Surface Science
- Publication Type :
- Academic Journal
- Accession number :
- 159819767
- Full Text :
- https://doi.org/10.1016/j.apsusc.2022.155197