Abstract
The influence of arsenite (As(III)) adsorption on 3-amino-propyl phosphonic-acid (3APPA) has been investigated using X-ray photoemission spectroscopy (XPS), vibrational IR and Raman spectroscopy. The functional amino group on 3APPA appears to play a significant role in the adsorption mechanism. Results of a combined experimental and theoretical investigation provide a comprehensive picture of the geometry and vibrational properties of 3APPA monolayers after interaction with arsenite. Experimental and scaled calculated IR properties display good agreement for the model case where NH2 groups, located as pendant groups on 3APPA surface, interact with the adsorbed As-O network. A charge transfer to the As-O moiety is also indicated by XPS measurements and ionization potential maps generated by DFT. Thus, 3APPA, as a functionalized bio-adsorbant, shows promise towards detection and remediation of As(III) in contaminated wastewater.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
