The XPS-revealed difference in the molecular sorption mechanism of Se(IV) and Se(VI) on Mg-Al-CO3 Layered double hydroxides (LDHs) focusing on the material surface speciation

Abstract

This paper extends the previous work on the EXAFS-derived mechanism of Se(IV)/Se(VI) adsorption on Mg-Al-CO3 LDHs synthesized by the original method and uses XPS surface analysis to determine the material phases, responsible for these anions removal. A new methodological idea is suggested how to distinguish chemisorption and physisorption by XPS. 

Keywords (in English)
X-ray photoelectron spectroscopy (XPS)
Mg-Al-CO3 Layered double hydroxides (LDHs)
selenate
selenite
chemisorption
physisorption
Author (co-authors)
First name Last name Institutional affiliation E-mail Phone number ORCID ID Academic status, position Institution address Author contribution(s) Institutional affiliation
Natalia
Chubar
natalia.chubar@gmail.com
0000-0001-7408-0355
Associate Professor
9 Dorohozhytska Str., Kyiv, 04112, Ukraine
Conceptualization
Data Curation
Formal Analysis
Funding Acquisition
Investigation
Methodology
Project Administration
Visualization
Writing – Original Draft Preparation
Writing – Review & Editing
Validation
Shupyk National Healthcare University of Ukraine
Manuscript file
xps-revealed-difference-molecular-sorption-mechanism-seiv-and-sevi-mg-al-co3-layered-double.docx6.14 MB